Sierra 18-7876-1 Oil Filter – GM/Chevy Long

Sierra 18-7876-1 Oil Filter – GM/Chevy Long

Part Number: 18-7876-1  |  SKU: 47-78761  |  UPC: 808282373603

The Sierra 18-7876-1 is a long-style replacement oil filter for GM-based marine gasoline engines, including common MerCruiser inboard and sterndrive applications. Built with a heavy-wall steel canister, epoxy corrosion protection, and high-efficiency filter media, it meets or exceeds original equipment filtration requirements. An anti-drain-back valve helps retain oil at the filter between uses, reducing dry-start conditions.

Key Specifications

• Thread: 13/16"–16
• Style: Long canister
• Height: approximately 5.32 in.
• Anti-drain-back valve: Yes
• Canister: Heavy-wall steel
• Corrosion protection: Epoxy-coated interior
• Filter media: High-efficiency, meets or exceeds OEM specification

Compatible Applications

• GM 283, 305, 307, 350, and 454 cubic inch marine inboard engines
• GM-based MerCruiser sterndrive engines (verify by model and serial number)
• GM inline-4 and inline-6 marine applications (earlier production)
• Other GM-block marine inboard and sterndrive engines using a 13/16"–16 long-style filter

Fitment Note: This is the long GM-style filter — confirm there is adequate installation clearance at your engine. Some GM marine engines use the shorter-style filter. Match to your existing part number or OEM cross-reference before ordering.

Service Interval

Replace at every engine oil change. Follow the engine manufacturer's recommended oil change interval — typically every 100 hours of operation or once per season, whichever comes first. Always replace the filter when changing engine oil.

Installation Notes

• Remove the old filter and confirm the old gasket has come away with it — a double-gasket condition will cause an oil leak
• Clean the filter mounting surface before installing the new filter
• Lightly coat the new filter gasket with fresh engine oil before threading it on
• Tighten by hand plus ¾ turn, or per engine manufacturer specification — do not over-tighten
• Start the engine and inspect for leaks before returning the vessel to service

OEM & Cross-Reference Part Numbers

• Sierra: 18-7876-1
• Crusader: 201104
• EMP: 35-57801
• Mallory: 9-57811
• Marine Power: 0905-000-0
• MerCruiser: 14957, 16595T1, 32716, 32717, 35-16595, 35-16595T, 35-802885Q, 35-802885T, 35-881126K01, 35-99884, 52022, 52731, 54111
• OMC: 173233, 502901
• Pleasurecraft: R-077002
• Quicksilver: 35-16595Q
• Volvo Penta: 3850559
• Yamaha Sterndrive: YSC-14231-20-0C
• Wix: 51061
• Fram: PH13

Related Products

• Sierra 78242 Oil Filter – GM/Chev Short — short-style alternative for engines with limited clearance
• Sierra 78791 Oil Filter – GM/Chevy V-6
• Sierra 78781 Oil Filter – Ford/Chrysler/Volvo Short
• Sierra 18-57824 Marine Oil Filter – MasterCraft & Ilmor GM LS V8 Remote Mount
• Sierra Oil Drain Kit – 1/2"-20 Thread, 42" Length (47-7891)

Parts Desk Insights

Best Use Case: Routine oil and filter changes on GM/Chevrolet-powered marine inboard and sterndrive engines — including common MerCruiser applications built on a GM block. At about 5.32 in. tall, this is the long-canister version and holds more oil than the short-style filter, providing solid filtration capacity for high-volume GM marine engines.

Common Issues: The most common ordering mistake is long vs. short confusion. If a customer is unsure which filter their engine takes, ask them to check the existing filter's part number or measure the installed height. Engines in tight engine compartments may require the short filter due to clearance. Also remind customers to always check that the old gasket comes off with the old filter — leaving a double gasket on the mount is a frequent cause of post-service oil leaks.