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Mercury Marine

Oil Filter (Quicksilver Brand) 35-866340Q03

Satisfaction rating 5 out of 5 (28 Ratings)
You save $1.93. (16%) $11.88
5+ IN STOCK Ships Immediately

Product Description

Fits all MCM/MIE GM engines, except Vā€‘6 models that have the oil filter mounted on the engine block. Also fits the 4.5L and 6.2L Mercury engine. Priced individually, sold @ multiples of 6 Quicksilver Branded, Box Point of Sale Packaged.

1 Product Questions

Don Bradley

Will Quicksilver oil filters 35-866340Q03 and 35-866340K be interchangeable for my 4.3 Merc v6 carbuerated engine ? The engine has the K filter and I just purchased a Q03 filter so Im confused ! Thanks Email donbradley3@gmail.com Thanks


Both of those part numbers are basically the same item. The one with the K is a Mercury Brand item. The one with the Q is a Mercury Quicksilver Brand Item.

28 Product Reviews

Mercruser 350 dil



5.7 Merc


Aussie buyer, fast and reliable, keep up the good work šŸ‘Œ

Finding the right part was easy and shipment was received quickly even with delays due to Covid-19



Fast shipping. Have purchased quite a few things from them. Always have fit. Will continue to buy from Crowley.

Delivery as stated, quality parts. Will complete all my Mercruiser parts purchases at Crowley.

Mercury Mecruiser 250HP I.O.

Repair Difficulty
Repair Time
More than 4 hours
Their parts breakdowns are very good, but in my particular application, they were not all the correct part #s. Their pricing is very reasonable. Trying to get a real parts person to help you on the phone with the right part selections can take a while. All in all, I would definitely order from them again.

Problem fixed: complete tune up, oil change, impeller replacement, fuel system clean out, new belt, and other general maintenance items.

Work done at a service repair center.


Speedy shipping.

great nice to get original parts

Prompt and efficient delivery. Totally hassle-free transaction !!

Mercruiser 3.0 L

Unbelievable fast delivery!! Great stuff guys. Parts were delivered to my door in Karratha, Western Australia quicker than if I bought them from Sydney.

Outstanding service, good pricing and fast shipping.

All items were well packaged and arrived in a timely manner. This was my second purchase for Mercruiser parts and will be my go to store for future purchases.


great service with great products


great everything was as stated arrived quick.


Excellent service super fast shipping

3.0 Mercruiser





Mercruiser 4.3 L

Repair Difficulty
Repair Time
1 to 2 hours

Problem fixed: Alernator belt broke and soon discovered that one bracket was broken and the other one cracked.

Lower alternator bracket failed and upper alternator bracket cracked which wrecked the alternator belt so battery couldn't charge and power steering was disabled. Crowley Marine had the only upper bracket I could find and provided it with a good price and free shipping.

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.

Name SKU Price Brand
Adaptor Gasket 16779 Mercury Marine
Fitting 8637131 Mercury Marine
Mercury Oil Filter 866340K01 Mercury Marine
O-Ring 843353 Mercury Marine
Oil Line 864927 Mercury Marine
Oil Line 864926 Mercury Marine
Seal 42077 Mercury Marine
Snap Ring 62750 Mercury Marine

Supersession Chain

Name SKU Superceding SKU
Oil Filter (Quicksilver Brand) VIEWING THIS PRODUCT 866340Q03 CURRENT
Oil Filter (Quicksilver Brand) 866340Q02 866340Q03
Oil Filter 802885Q 866340Q02
Oil Filter 14957 802885Q
Oil Filter 54111 14957
Oil Filter 52731 14957
OIL FILTER ASSY 52731A1 52731
Oil Filter 52022 52731
Oil Filter 32716 54111
Oil Filter 32717 52731

Aftermarket Product Interchange

Name SKU Price Brand
Oil Filter 18-7824 $8.69 Sierra Marine
Due to manufacturer policy OEM Mercury products can only be shipped to addresses within the United States.