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Crowley Marine: serving boaters for over 50 years
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Mercury Marine

CHECK VALVE 21-8M0082362

Satisfaction rating 5 out of 5 (13 Ratings)
You save $.05. (1%) $8.04
ONLY 3 REMAINING Ships Immediately

Product Description

BRP factory part. Search for more factory parts & parts diagrams.

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13 Product Reviews




1987 Force 50hp

Repair Difficulty
Repair Time
More than 4 hours
Outstanding as usual! Fortunately I do not need or Purchase many items for my Boat Motor, but when I do, it is from Crowley Marine.

Problem fixed: Hard starting, loss of Power and running out of Fuel.

Originally found Fuel lines deteriorating from within from the use of Regular Gasoline. Switched to Non Ethanol Fuel and replaced all Fuel Lines. Found Fuel Filter partially plugged and replaced. Found improvement in starting however still loosing power and running low rpm. Purchased all AVAILABLE parts to rebuild Fuel Pump and Carburetor from Crowley Marine. Parts arrived quickly and at reasonable cost! Repairs completed and now ready for a Great Bass Fishing season! Crowley Marine is the Best.

Great to get the parts I did for such an old outboard but disappointed that two of the items I needed that were listed as available were not available.




I will buy again from them. Was missing 2 pieces in my order and had absolutely no problem getting the problem fixed.



50HP 1988 U.S Marine Force

Repair Difficulty
Repair Time
Less than 30 mins
there was a glitch on the order. I didn't get a tracking number, so after 5 days, I emailed and they sent the order that day. Order was complete.

Problem fixed: overheating

Just a word of caution, change the thermostat when doing the impellor. My engine overheated and stopped. After a head gasket change and thermostat, it seems to be running fine (head and block were still dead flat), but I realize now that it never pumped this much water since I've owned it (5 years). So the thermostat was probably bad for a long time. I installed a tell-tail on the top of the block. Crowley always has the right parts for this engine, which is hard to do for the 1988 and '89 years.

mercury jet 150

Repair Difficulty
Repair Time
1 to 2 hours

Problem fixed: will not start

changed fuel filter, removed pump out put fuel line noted no fuel. removed 2 stage fuel pump, rebuilt and reinstalled. rechecked for fuel output

Product Fitment Grid

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

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Supersession Chain

Name SKU Superceding SKU
fuel pump CHECK VALVE 30430 8M0082362
FUEL PUMP VALVE F177330 8M0082362
CHECK VALVE F84330-1 F177330
CHECK VALVE 20963 30430
Due to manufacturer policy OEM Mercury products can only be shipped to addresses within the United States.