OMC Internal Engine Parts

Piston Kit - Special Order est. 10 Days

Sierra 18-1233 Timing Cover Seal for 7.4L GM Engines Sierra replacement timing cover seal. Sierra aftermarket parts are manufactured to meet or exceed OEM requirements. Fits 7...

Sierra 18-2916-9 Water Pump Housing Gasket (2 Pack) Sierra replacement water pump housing gasket for OMC Stern Drives. Sold as a pack of two. Interchangeable with: OMC Stern Drive 911702

Loctite Threadlocker 271 - Heavy Duty Red High Strength, Permanent Threadlocker For Heavy Duty Applications.

Sierra 18-0548 Adapter To Intermediate Housing Gasket Sierra replacement adapter to intermediate housing gasket for OMC Stern Drive. Interchangeable...

Sierra 18-2947-9 Thermostat Gasket (Pkg Of 2) Sierra replacement thermostat gasket for OMC Stern Drives. Package of 2 Interchangeable with: GLM 33840 Mallory 9-60017 OMC Stern...

Sierra 18-0348 Oil Pan Gasket Set Sierra replacement oil pan gasket set for OMC Inboard and Mercruiser Stern Drive. Fits: MCM/MIE GM V-8 (427, 454, 482, 502 & 540 cid) engines...

Water Passage Gasket (Priced Per Pkg of 2) - Special Order est. 10 Days

Shift Cover Gasket for OMC Cobra (Priced Per Pkg of 2) - Special Order est. 10 Days

Sierra 18-0929-9 Thermostat Gasket (Priced Per Pkg Of 2) For use on Johnson/Evinrude Outboard 3 cyl. engines, OMC Sterndrive/Cobra I/O engines, & Volvo Penta I/O 3.L GS, GL Special Order est. 10...

Sierra 18-0947-9 Pivot Cap Cover Gasket (Pkg Of 2) Sierra Marine replacement pivot cap cover gasket for OMC Stern Drives. Sierra manufactures its aftermarket engine parts to meet OEM requirements...

Sierra 18-2996-9 Outdrive Seal (Priced Per Pkg Of 5) Replaces: OMC 3852560 0911823 GLM 86300 Mallory 9-76508 Volvo  3852560 Aqua Power  473 GLM  8630

Drain/Fill Plug Washer (Priced Per Pkg of 50) - Special Order est. 10 Days

Sierra 18-7123 O-Ring I.D.: 2.235" Width: 0.100" Interchangeable with: GLM 81400 Johnson/Evinrude Outboard 308876 OMC Stern Drive 308876  

Volvo Penta 3853511 Cylinder Head Gasket Genuine OEM Volvo Penta part. Special Order Item. Interchangeable with: Sierra Marine 18-3887 OMC Stern Drive 3853511 Special Order Volvo Penta Marine...

Manifold End Gasket Replaces: OMC 0907761, 0778119 Barr OMC47-907761 GLM 32580 Mercury 878970 Redline RL0114

Sierra 18-0147 Water Pump Gasket Sierra replacement water pump gasket for Ford V8 engines. For: Ford V8 Interchangeable with: Chrysler/Force/US Marine F724160 GLM 31900 Mercruiser...

Sierra 18-0435 Carb Mounting Gasket for Mercruiser, OMC, Volvo Replaces: OMC 0908765, 0778103 Aqua Power 1061 Felpro 17843 GLM 30381 Redline RL0435 Volvo 856033

Sierra 18-2058 Oil Seal for OMC Stern Drives Sierra replacement OMC oil seal. O.D.: 2.438" Shaft Size: 1.938" Width: 0.250" Interchangeable with: GLM 86050 Mallory 9-76227 OMC...

Sierra 18-2663 OMC Lower Unit Seal Kit - Replaces 0981797 Sierra high-quality engine parts are designed to meet OEM specifications. For use on 1977 OMC Stern Drive engines. Kit Contains: (4)...