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Fuel Pump Diaphragm Kit 21-857005A1

Satisfaction rating 5 out of 5 (100 Ratings)
$29.95
You save $2.25. (7%) $32.2
5+ IN STOCK Ships Immediately

Product Description

Mercury factory part. Click here to search for more factory parts or view parts diagrams.

43 Product Questions

will this part fit mercury 2002 150 carbed s/n ot588682p 2stroke outboard fuel pump diaphragm ket p/n 857005a1

c merriman

Answer:

Yes, that will work.

will it fit a 60hp mercury serial #OG117542?

Doug

Answer:

Yes, it will.

Will this fit a 2006 3 cylinder mercury 50ELPTO serial number 1B444153?

Bob S

Answer:

Yes, it will.

Will this part fit Mercury Big Foot 60 ELPTO, Ser# OT 781661 Thank You

Marion Judy McKenzie

Answer:

Yes, this will work with your motor.

Will this fit a 05 Mercury 90hp serial# 1b024351

Travis Mitchell

Answer:

Yes, this will work with your application.

Will this fit a 2004 Mercury 50 hp 2 stroke outboard? Model #1050412CN Serial #0T937796. Does this kit provide everything I would need to rebuild my fuel pump?

Rob

Answer:

Yes, this kit will have everything you need to rebuild your fuel pump.

Will this fit a 1995 mercury 115hp outboard? Serial # 0g25582

Rober

Answer:

Yes, this part will work with your motor.

Is this the correct rebuild kit for a '97 sport jet 175 xr2, oe275175

Jim

Answer:

Yes, this kit will work with your motor. It is the correct one needed.

Will this kit fit a 96 Mercury 115 2 stroke serial number og427607?

Scott Newling

Answer:

Yes, this kit will work with your motor.

2001 Merc ELPT Serial 0T327786 Model 1041412YN?

Chris

Answer:

Yes, this part will fit your motor.

WILL THIS PART FIT A MERCURY 90 2 STROKE WITH THE FOLLOWING SERIAL NUMBER: 0T607120 2003 90 ELPTO Thank you in advance Regards, Anthony

ANTHONY

Answer:

Yes, part number 857005A1 https://www.crowleymarine.com/parts/276.cfm will fit your provided engine model.

Hi,I have a 1996 40 HP Force motor. Serial# OE 172558. Model # 40ELPT. Is this the correct part for me? Thanks

Daryl

Answer:

Yes, this will be the correct kit for your motor.

Will this fit a 2005 Mercury 50 hp 2 stroke? Serial No. 1B166514, Model 1050412DD

Jim

Answer:

Yes, this kit will fit your outboard.

Hello! Will this fit a 2003 Mercury Optimax 200XL S/N 0T674556?

Nathan

Answer:

Yes, this fuel pump kit will fit your engine.

will this product fit 1998 mercury 200 XL serial oG595857

Howard

Answer:

Yes, this fuel pump kit will fit your engine.

Will this fit a 99 mercury efi 200 2 stroke serial number g925524

BRIAN WEBB

Answer:

Yes, this part will fit your 0G925524

Will this fuel pump diaphragm kit fit a 1995Mercury 40 2-stroke serial # OG265618?

Ed

Answer:

Yes, this part will fit your engine.

Will this fit a 1998 Force 40 hp ELPT S/N OE318692 ?

Mark Shaw

Answer:

Hello, Mark. I am not showing your serial number at our system. Do you have the model number on hand? Let us know, please. Thank you

Will this fit a 2001 Mercury 150XL carbed engine, serial 0T265647?

Phil

Answer:

Yes, this kit will fit your engine.

will this fit 2001 mercury m2 jet drive 240 efi serial # y-s-240j30ys oe386828 ?

homer

Answer:

Yes, this kit will fit your engine.

will this product fit Mercury 40 2003 40ELPTO serial OT754987 Model 1041412AC

Roberto

Answer:

Yes, this part will fit your engine.

Will this fit a 2004 90hp elpto 0t916201?

Evan

Answer:

Hello, Yes, this will be the correct diaphragm kit for your engine. Thank you

2001 model 1F90422YY serial number 0T330866 4 stroke carb Mercury 4 cylinder engine, Fuel pump rebuild kits. ??

Glen Rasmussen

Answer:

Hello Glen, With the serial number, I pulled up the following diagrams FUEL PUMP(SERIAL NUMBER 0T408999 & BELOW) https://www.crowleymarine.com/mercury-outboard/parts/4858_100.cfm?mdl=TXIOCO Am not pulling up a rebuild kit for the fuel pump. Maybe you can buy each piece separately, to rebuild the pump. Thank you.

Will this fit a 2003 mercury 150L efi #0T735505

Jessie

Answer:

Hello, Yes, this part will fit your engine. Thank you

Will this rebuild kit work for my 1999 Mercury 4 stroke 25 hp outboard (serial number 06773455)

Thomas Rhodes

Answer:

Greetings, This rebuild kit will not fit your model. Unfortunately your specific model doesn't come with a fuel pump diaphragm kit and you would have to look on the fuel pump section of your model's diagrams and piece out everything you need from the kit individually. The link to that section is listed below. Thank you https://www.crowleymarine.com/mercury-outboard/parts/2950_90.cfm?mdl=EOSQKI --

Will this fit a 99 Mercury 40 hp 2 stroke motor

Tracy

Answer:

Hello, Yes, this fuel pump kit will fit your engine. Thank you -- Andrés Nasser Crowley Marine 1-800-580-0720

will this fit my 2004 225 efi serial number ot973813 225xlefi

corey

Answer:

Hello, yes, this part will fit your engine. Thank you -- Andrés Nasser Crowley Marine 1-800-580-0720

Will this fit 2000 mercury 40ELHPTO ser#OTO46175

Steve

Answer:

Hello, yes, this part will fit your engine.

Will this fit my Mercury Marine 2004 60 ELPTO SERIAL # OT900676-THREE CYLINDER TWO STROKE THANKS

JIM MCWILLIAMS

Answer:

Hello, Jim. Yes, this part will fit your engine.

1992 40 hp mercury outbord, 4 cylinders ELO. Does this fulp pump diagphram kit fit this motor?

Harald Debor

Answer:

Hello, yes, this fuel pump Diaphragm Kit will fit your engine.

2004 Mercury 115ELPTO 2 stroke serial # 0T831206...is this the correct fuel pump kit? Also need correct water pump kit...46-4302A7?

Mark D McCabe

Answer:

Hello, Mark. Yes, this part will fit your engine.

Will this kit fit SN OT953414 and does it require two kits?

Steve

Answer:

Hello, Steve. Yes, this part will fit your engine and it shows you will need two of them.

Will this diaphragm kit fit a 1996 mariner 75 serial number OG360711?

Ron Wilcox

Answer:

Hello, yes, this diaphragm kit will work with your engine.

Will this fit a 40 horsepower serial number OE328817

Wayne Searcy

Answer:

Good morning,

Hello, wondering if this is the correct kit for my 1985 Mercury 175 Black Max? Serial # 6619127

Jeremy Arnold

Answer:

Yes, that will be the correct kit needed for your application.

Will this fit my 1983 150hp Mariner serial # 6309446

Edgar Lopez

Answer:

Yes that will work for your application.

Will this fit my 2002 Merc 150hp XR6

Jesse Meyer

Answer:

Hello, That should be the correct one, but are you able to supply your serial number. We would need that to determine. Thank you

Will this fit my Mercury 50hp 3 cyc 2 stroke serial 1B098519

Erick

Answer:

Yes, that would be the correct repair kit for your fuel pump.

Will this fit my 2006 Mercury 50 horse four stroke fuel injected serial # 1b268645

Andy Hinton

Answer:

Unfortunately this kit would not work for your application. The diagram kit they were offering has been discontinued and they are saying to order the complete fuel pump for that now.

Will this fit a Mercury 40 hp 2 stroke 3 cylinder? serial #1B196593

matt

Answer:

Yes, that would be the correct fuel pump kit for your application.

Will this fit a Mariner outboard Mercury division serial # OB370979

Patrick

Answer:

Yes, I am showing that part number 857005A1 would be the correct one for your application.

Will this work for a 2003 25 HP Bigfoot 4 stroke?

Antonio Altamirano

Answer:

I am not showing that to fit the 25hp models. If you are able to supply your serial number we can look further into this for you.

Will this kit fit my vmax 225

Johnson

Answer:

This is a Mercury part. If you have a Yamaha VMAX, you will want to look up your parts using the Yamaha parts catalog.

100 Product Reviews

Excellent very helpful.
by

Mercury 100

Good
by

Products were as advertised although very expensive. Shipping was bad. Took 8 days to get from Denver to Texas. In post office only 3 days. 5 days from label creation until arrival at post office.
by

Good parts look-up site. Fast shipping. Totally satisfied with my purchase!
by

mercury 6ohp

Repair Difficulty
Easy
Repair Time
30 to 60 mins
by

15 hp Evinrude

Repair Difficulty
Hard
Repair Time
1 to 2 hours
OK, part of order was incorrect, had to wait quiet awhile for initial order / then had to wait for correct part.
by

Problem fixed: Motor would not run

Replace fuel pump, replace all fuel lines, rebuild pull start rewind,

Easy to find what I needed. The kit arrived on time and was exactly as described. Excellent product.
by

by

by

by

Mariner 115

Repair Difficulty
Medium
Repair Time
1 to 2 hours
Availability and shipping speed are second to none. Thanks
by

Problem fixed: Rough idle.

Cleaned carbs and fuel pump. All is good now

2003 Mercury 150

Repair Difficulty
Medium
Repair Time
1 to 2 hours
Fast shipping. Really nice place for all my boat needs!
by

Problem fixed: Engine overheat at high rpms

Motor was overheating. Installed new poppet and thermostats. Poppet was a little difficult but taking my time was able to get it done in about half an hour . all good now!

by

force 75 hp

was good to deal with
by

Mercury 175

by

by

2000 Mercury 225 EFI

Repair Difficulty
Easy
Repair Time
Less than 30 mins
by

Problem fixed: Running rich, smells like gas badly

My engine smell liked gas terribly and was running rough, sometimes even had low poor. Found vacuum fuel pump to be leaking and letting fuel run down the line out of engine compartment. I beleive this to have also caused a vacuum leak, which induced a rich running condition at idle. The pump was rebuilt this winter with an aftermarket kit, so I rebulit it again with an OEM kit from Crowley. Same price! Engine is back to running excellent!

Good selection of inventory. Very good customer service response. Fast shipping.
by

Part was very easy to find on the website, and shipped on time.
by

Got the correct fuel pump kit in a short time. Less hassle than going to a local dealership. Good website. I retired from Regal Boats and plan to use this site for a small boat repair shop.
by

It was a pleasure to deal with your store.
by

Just right, fast shipping
by

1984 Mercury 70 hp 3 cyl

Repair Difficulty
Medium
Repair Time
2 to 4 hours
I had a random parts order for an old mercury outboard. All parts were original packaging, as described, and fit my project. Would buy from again!
by

Problem fixed: 3 carb cleaning, gaskets, water pump

Haven't finished. But close!

As always great!! Love the easy to use web site
by

1998 90 hp Outboard Moror

Repair Difficulty
Medium
Repair Time
30 to 60 mins
My “in stock” parts that I order are shipped very fast! I also like the fact that Crowley Marine carries hard to find parts for my 1998 Force 90 hp Outboard Motor. Excellent Customer Service!
by

Problem fixed: Low Water Pressure

I rebuilt my water pump with parts purchased from Crowley Marine. It was fairly easy, with help from YouTube.

by

by

Easy to look up the parts and order. Delivered as promised. I will continue to use Crowley Marine.
by

Mercury 250

Easily found the part numbers I needed. Once ordered you get immediate feedback on your order. Excellent service
by

MERCURY 200 EFI

Repair Difficulty
Easy
Repair Time
Less than 30 mins
fast and accurate
by

Problem fixed: FUEL PUMP

REPLACED GASKETS

150 hp

Repair Difficulty
Easy
Repair Time
Less than 30 mins
Very good
by

Mercury 40hp

Great, USPS lost the package and they had the same parts in my hands in less than 3 days. These guys rock!
by

efficient and reasonable shipping kit had good instructions,i corrected an earlierassembly mistake
by

Always a great help
by

Repair Difficulty
Easy
Repair Time
Less than 30 mins
by

Good price on genuine Mercury parts. Maybe it's because of the pandemic, but shipping is SLOW.
by

Force 40hp

Repair Difficulty
Easy
Repair Time
Less than 30 mins
by

delay in shiping was blamed on covid but i got what i needed thanks for not shuting down form covid
by

Might have been out of Crowley Marines hands. But my parts took 40 days to ship. Good customer service though
by

by

Sport jet 175

It was good thanks for your fast service
by

very good. things went wrong but not anything to worry about in the end everything worked out fine. Diego was a big help.
by

135 Mariner

Repair Difficulty
Easy
Repair Time
Less than 30 mins
Parts fit perfect for my older motor. Shipping was very good even during covid. They kept me updated on arrival of package. Great experience.
by

Problem fixed: Fuel pump

Removed fuel pump and followed directions was quick and easy to repair and back on the water in no time.

Mercury tracker force

Repair Difficulty
Easy
Repair Time
Less than 30 mins
by

Problem fixed: lost prime even at low throttle

rebuilt fuel pump. Gasket material broken and stuck in the diaphragm.

Mercury 50hp

Repair Difficulty
Medium
Repair Time
30 to 60 mins
Great. You got my order shipped same day
by

Problem fixed: Not enough fuel

Disassemble. Clean parts well. Reassemble according to the service manual procedures

Great
by

by

mercury 90 hp

Repair Difficulty
Easy
Repair Time
1 to 2 hours
great Parts are easy to look up
by

Problem fixed: rebuilt fuel pump

had a problem with smoking a lot at idle. Rebuilt carbs 1st, Tried to google ? Could fuel pump leak internal, Could not seem to get an answer!!! Decided to unbolt fuel pump from block & squeez bulb. Yes, fuel came out of hole going to block. Pulled fuel pump apart & Yes, The Diaphrams were cracked!! ORdered & installed fuel pump kit. Now I can do a better adjustment on carbs * motor dosen;t smoke like it was. Thank you , Hoyet

Great prices and great products just can’t depend on shipping. Placed an order with 2-3 day shipping on the 14th and have yet to receive item. I did get a partial refund for shipping but I needed the parts not the refund.
by

well done
by

A bit disappointed with their shipping time. They said all items were in stock and yet it took Crowley 10 days before the items were ready to ship (Friday but not picked up until Monday). Total, 16 days from order to delivery. Looking back, it would have been much faster to order from my local dealer and endure the 3 day wait for their out of stock item.
by

Just as anyone would expect Quality parts quick shipment
by

Slow to ship in
by

1994 mercury 100 hp 2 stroke

Very pleasant and fast. Thank you Crowley Marine!
by

by

Mercury 150 1989

Great! For the parts you had. I had to go to eBay for a couple of less common items.
by

by

by

1994 60 hp. Mercury engine

Repair Difficulty
Medium
Repair Time
30 to 60 mins
easy site to navigate, found the part easily, got here quickly and price was fair. Will buy from them again.
by

Problem fixed: intermittent fuel supplied to engine

rebuilt the fuel pump. watched a you tube video and did the repair. Kind of easy that way.

by

Mercury 90hp

Repair Difficulty
Easy
Repair Time
30 to 60 mins
Over all was good. Was waiting for a part to he shipoednin to the warehouse before it got shipped to me and I had to ask what the status was. Would have liked it better if there were more updates on the order. Other than that the parts were perfect and I'm extremely happy with the service.
by

Problem fixed: Bogging

Rebuilt fuel pump and replaced throttle rod keepers

'87 115 inline 6 mercury

Repair Difficulty
Medium
Repair Time
1 to 2 hours
easy part look up; website intuitive and well written; questions answered promptly; items all received in good shape; and even using regular mail quick shipment.
by

Problem fixed: just old, like me. waterpump impellors deteriorate as do I.

Straight forward, using a repair manual.

Excellent service and fast delivery.
by

by

by

force 90hp

by

by

Crowley always has or can quickly get the parts I need.
by

Rey good Freight to Australia was quick Regards, Brian
by

by

1988 Mercury 115 (2 stroke)

Repair Difficulty
Medium
Repair Time
2 to 4 hours
I purchased the Quicksilver OEM carburetor repair kit, gaskets and floats, fuel pump service kit and fuel filter for a 1988 Mercury 115hp. The items were delivered promptly to Australia and fitted perfectly.
by

Problem fixed: loss of power, difficult to start, poor idle

Serviced the 3 carbs and fuel pump. Replaced all fuel hoses Drained stale fuel. Replaced fuel filters.

by

1998 75 FORCE

Repair Difficulty
Hard
Repair Time
More than 4 hours
WAS GREAT A KEPT ME INFORMED ON EVERYTHING.
by

Problem fixed: POWRER HEAD EXAHSAT LEAK AND COULD SEE WATER LEAKING FROM MAIFOLD.

DROPPED LOWER UNIT. PULLED POWER HEAD AND EXHAUST TUBE OUT. IT IS A BIG JOB, NOT FOR NONE MECHANICAL PEOPLE. HAVE NOT GOT IT ALL BACK TOGETHER YET. WAITING FOR A PART I BROKE TO GET FIXED, NOT MADE ANY MORE. GOT PICTURES IF ANY BODY INTERESTED?

40 hp

Repair Difficulty
Easy
Repair Time
Less than 30 mins
Quick, as listed, fast delivery.
by

Problem fixed: Leakey fuel pump

Remove rebuild replace

Mercury Classic 50 45 hp

Repair Difficulty
Medium
Repair Time
More than 4 hours
Crowley Marine had all the parts that I needed for my repair, in an easy to use website.
by

Problem fixed: Leaky lower unit

Went to pull lower unit and found that the drive shaft was stuck in the fly wheel. Had to remove OB from the boat and turn it upside down, suspending it from the lower unit. Using a grease dissolver and some wooden wedges I was able break the drive shaft loose. After that it was just putting everything back together. Just a side note, I never have worked on an OB before, but I sure learned from the experience.

Mercury 35 hp

Repair Difficulty
Easy
Repair Time
2 to 4 hours
Great. When I messed up and and ordered an item on back stock and it had my other much more critical parts on hold, I was able to get that item removed/refunded with a simple phone call. Great customer service and support. Parts were excellent. My 87 Mercury 35 now runs great and has no water leaks. Thanks Crowley.
by

Problem fixed: Water leaking at upper spark plug. Engine floods with fuel and wont run.

Replaced gasket on cylinder water jacket. Replaced diaphragms and gaskets in fuel pump. Disassembled, cleaned, and replaced gaskets in carburetor and new crush washer under fuel inlet needle. Runs nicely and idles perfectly now with no water shooting out around the spark plug haha.

1998 mercury tracker

Repair Difficulty
Easy
Repair Time
Less than 30 mins
by

Problem fixed: fuel pump seal leaking

rebuilt fuel leaking fuel pump. replaced internal parts and seal

Mercury 40

Repair Difficulty
Easy
Repair Time
Less than 30 mins
Easy to find what I needed will order from here again
by

Problem fixed: Speed going up and down

Rebuilt fuel pump

mercury 50 hp

Repair Difficulty
Medium
Repair Time
Less than 30 mins
got my two day shipping and parts were all good and right
by

Problem fixed: fuel pump was kind of failing

i just put all the new fuel pump diaphram gaskets back where the old ones were and the fuel is working perfect.

Mariner 30hp

Repair Difficulty
Medium
Repair Time
2 to 4 hours
Spot on!!! Couldn’t be any better!!
by

Problem fixed: Water pump

Broke the shift linkage taking the lower unit off I thought I had it but apparently I didn’t. And broke the linkage under the power head. But it’s fixed now

1997 Mercy Elpto 115

Repair Difficulty
Easy
Repair Time
30 to 60 mins
Excellent prices, fast shipping. Will order again
by

90 HP mariner 1990

Repair Difficulty
Medium
Repair Time
1 to 2 hours
WAS READY TO GO FISHING NO ONE HAD THE PART EXCEPT CROWLEY they got me back in the water quick originally ordered from other co just to wait a week and get email that they were out of stock try Crowley first
by

Problem fixed: ball wont pump up gas running from carbs

float for carb had hole in it was a week till fishing tournament looked all over no one had it in stock then found Crowley shipped quick got me back in water try these people first i originally ordered from ebay just to get email a week later saying parts were out of stock ball wouldnt pump up gas running from carbs bad float and pump a little hard to carbs off but after leaving bottom mounting bolts through carbs come right off nit that bad no special tools needed

Mercury

Repair Difficulty
Hard
Repair Time
2 to 4 hours
Great experience buying for an older mercury outboard. Got it fast
by

Problem fixed: No fuel

Rebuilt fuel pump and carburetor

Mercury 90hp

Repair Difficulty
Easy
Repair Time
2 to 4 hours
Great shopping experience! All the parts I needed in a timely matter.
by

Problem fixed: Engine sat up for 10+ years

Rebuilt carburetors and fuel pump, changed water pump and fuel filter, cleaned out fuel tank and changed the 2-cycle oil.

Mercury 200hp efi

Repair Difficulty
Easy
Repair Time
30 to 60 mins
Easy parts lookup, reasonable price and fast delivery!
by

Problem fixed: Hard to crank after running and then sitting for at least 15 minutes.

Repair did not fix my problem.

50 hp mercury

Repair Difficulty
Easy
Repair Time
Less than 30 mins
good
by

Problem fixed: its a mercury been setting up for a long time

not done yet

Mercury 150

Repair Difficulty
Easy
Repair Time
1 to 2 hours
by

Problem fixed: maintenance

rebuilt the fuel pump. exchanged the fuel filter and replaced the impeller.

2000 Mercury 225 PROMAX

Repair Difficulty
Medium
Repair Time
1 to 2 hours
This store is run the way a business should be run, first class, if they don't have it, they WILL GET IT!
by

Problem fixed: Water pressure issues

Switched adapter plates, had different water path, plus has a sport master lower which added to problem.

Force 120

Repair Difficulty
Medium
Repair Time
2 to 4 hours
Everything fit as it should.
by

225 Optimax

Repair Difficulty
Medium
Repair Time
1 to 2 hours
Good, Factual and No BS. Thanks
by

Mariner 150 dfi

Repair Difficulty
Medium
Repair Time
1 to 2 hours
Good prices, timely shipping.
by

1995 Merc 90HP 2 - Stroke

Repair Difficulty
Medium
Repair Time
More than 4 hours
Solid
by

Problem fixed: Low compression number 1 cylinder

I had low compression in the number one cylinder of my 1995 Merc 90hp two stroke outboard. After being on the fence on how to repair or replace it I decided on buying a long block for it. After a month or so of searching prices ,costs and so on I settled on buying one from Crowley Marine. The reason is simple, bottom line was customer service and satisfaction from their customers. I could have bought cheaper including install but decided it against it for that reason also. Believe me I researched the heck out of Crowley through the internet before I made my choice. I did the complete power head change out in about 10 hours or so. Take pictures as you go so you know how to put everything back together too. Also buy a OEM repair manual and nothing else !! Believe me big help! Ok got the new long block installed , lower unit back on and was all proud of myself. Set up the basic timing, this is where you NEED the OEM manual for sure. I filled the barrel full of water with the lower unit in it and was all ready to start it. The motor turned over, compression, wants too fire but wont run. Ok when this happens everybody knows that feeling. I double check fuel supply , filter, lines and so on. all is fine. Well you know what , if you read the owners manual and FOLLOW their directions on how to start your motor it just may run ! I pushed the key in to prime carbs , counted to ten while thinking in the back of my mind I messed up some where and surprise, I just tapped the key and she fired right up ! I have never had a outboard start so easily ever all the time. End of story is do your home work and buy a long block. Really not hard to do.

175 sportjet

Repair Difficulty
Medium
Repair Time
Less than 30 mins
Got the right parts in a very timely fashion
by

Problem fixed: Wouldn't rev high enough to plane the boat.

Rebuilt the fuel pump.

mercury 40 hpeee

Repair Difficulty
Easy
Repair Time
Less than 30 mins
very good
by

Problem fixed: not getting fuel

cleaned and replaced diaphram

Mercury 90

Repair Difficulty
Medium
Repair Time
2 to 4 hours
Great! They have always been very helpful, fast delivery, and their prices are the best. I have used their low price guarantee many times and they never have a problem and they have great communication.
by

Problem fixed: Install carb kits and fuel pump kit

Remove old carburetors, Disassembled each carb ( 3 of them) Cleaned old carburetors with carb cleaner Installed carb kits and set float level Re-installed carbs Set carb/timing synchronizing Removed fuel pump Cleaned old fuel pump body Installed fuel pump kit Started engine and adjusted carb idle jets

Mercury 40hp

Repair Difficulty
Easy
Repair Time
Less than 30 mins
Great, I received the correct part for my 01 40HP Mercury.
by

Problem fixed: Bogs out on WOT

Removed fuel pump, disasimbled. Installed fuel pump rebuild kit.

99 Force 40 HP

Repair Difficulty
Hard
Repair Time
More than 4 hours
As usual, Crowley's selection and prices were great, and shipping was prompt
by

Problem fixed: Failed Cylinder Sleever - COMPLETE rebuild

After discovering a failed cylinder sleeve on my 99 Force 40HP (by Merc.), I decided to do a COMPLETE overhaul including new forged pistons, rings, all gaskets, fuel hoses, paint (cowl & leg), decals, and otherwise. Crowley has been key to sourcing specific parts that aren't readily available anymore, or finding part numbers and part specs for parts that aren't available anymore (e.g. the 2.5" partially threaded exhaust manifold bolts). At this point, I just need to reconnect the electricals and will be seeing if she fires. wish me luck!

Mercury Blaxk Max 135 V6 1986

Repair Difficulty
Medium
Repair Time
1 to 2 hours
Excellent parts, website and information available. The parts are a reasonable price and delivery is very good, quite impressed that the item arrived in one piece and in good time as I'm in the UK. Thank you Crowley Marine.
by

Problem fixed: Possible Diaphram issue.

Follow instructions that come with kit. Easy to understand once you dismantle the pump. Make sure you take photos as you take the pump apart as you need to make sure all the parts go back in the correct order.

Mercury 50 HP

Repair Difficulty
Easy
Repair Time
Less than 30 mins
Great! So quick we couldn't believe it was here already!
by

Problem fixed: bought a battery charger. Worked great!

Hooked it up as per instructions (easy) and let it work!

50 hp classic mercury

Repair Difficulty
Easy
Repair Time
Less than 30 mins
by

Problem fixed: fuel pump

I purchased a fuel pump kit from another supplier (ebay) and they had out of date kit without instructions. Crowleys cost was a little more, but the kit was correct and there were instructions for the repair included. I should have went with Crowley in the first place. Live and learn. Joe

Product Fitment Grid

This guide is to be used as a reference only. You must verify fitment using your model or serial number.

Customers Also purchased

Parts included in this kit

Please note: Some of the included items may not be available for purchase separately and won't be listed here.

SKU Price Brand
Gasket 987691 Mercury Marine

Supersession Chain

SKU Superceding SKU
Fuel Pump Diaphragm Kit VIEWING THIS PRODUCT 857005A1 CURRENT
DIAPHRAGM KIT 42990A10 857005A1
DIAPHRAGM KIT 42990A11 857005A1
CHECK VALVE KIT 42990A7 42990A10
DIAPHRAGM KIT 42990A9 42990A10
DIAPHRAGM KIT 42990A6 42990A9
DIAPHRAGM KIT 42990A8 42990A9
DIAPHRAGM KIT 42990A4 42990A7
DIAPHRAGM KIT 42990A5 42990A8
DIAPHRAGM KIT 42990A1 42990A4
DIAPHRAGM KIT 42990A3 42990A6
DIAPHRAGM KIT 42990A2 42990A5

Aftermarket Product Interchange

SKU Price Brand
Fuel Pump Kit 18-7817 $16.39 Sierra Marine
Force/Mercury 3,4,6CYL Fuel Pump Kit FM-803 $0.00 Red Rhino
Due to manufacturer policy OEM Mercury products can only be shipped to addresses within the United States.