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Add to CartSierra engine parts are designed to meet OEM Specifications. Fits MerCruiser I, R, MR, Alpha One, TR, and TRS engines. Note: Do not use on #1/R lower units. Also fits Mercury/Mariner OBs of Japanese origin that use an 8x1.25 metric threaded screw.
Use With:
Interchangeable with:
California Residents: 
WARNING
Cancer and Reproductive Harm -
P65Warnings.ca.gov
Other Details
Sierra 18-4226 MerCruiser Blue Plastic Drain Plug This Sierra 18-4226 drain plug is widely used for MerCruiser V4, V6 and V8 marine engines. Fits MerCruiser cylinder blocks and exhaust...
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Sierra 18-2244 Drain Screw for Mercury and MerCruiser This Sierra 18-2244 Drain Screw is for use with the following: MerCruiser I, R, MR, Alpha One, TR, TRS & all O/Bs with 3/8-16 non-magnetic...
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Sierra 18-4263 Pipe Plug 1/8"-27 NPT Sierra replacement pipe plug. Thread Size: 1/8" - 27 NPT Material:...
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Sierra 18-2454 Drain Plug Sierra high-quality engine parts are designed to meet OEM specifications. For OMC Stern Drives and Volvo Penta engines. Interchangeable with: OMC Stern...
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Sierra 18-2374 Magnetic Drain Screw Sierra Magnetic Drain Screw for use on Yamaha Outboards. Thread: M8-1.25 Use With: 18-4698: Drain Fill Washer 18-46981-9: Drain Fill Washer (Priced per...
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