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Mercury Outboard Internal Engine Parts

7399
guidebook

Parts Selection Guide

Find the parts you need

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Prop Selection Guide

Find the right prop for your boat

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      • Sierra 18-2016 Oil Seal Replaces 26-41953
        List Price: $10.99
        Starting At: $8.49

        Sierra 18-2016 Oil Seal for Mercury, and OMC Sierra high-quality engine parts are designed to meet OEM specifications. Shaft Size: 1.187" O.D. 1.875" Width 0.250" Interchangeable with: GLM 85010 Mallory 9-76100 Mercury...

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      • Sierra 18-2026 Oil Seal Replaces 26-16977
        List Price: $12.99
        Starting At: $8.99

        Sierra 18-2026 Seal for Mercruiser, OMC, Johnson and Evinrude Drive Systems Sierra replacement Line Cutter Seal. Shaft Size: .875" O.D. 1.250" Width 0.188" Use with: 18-2093 Oil Seal Interchangeable with: GLM 85040 Johnson/Evinrude...

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      • Sierra 18-2810 Block Cover Gasket Replaces 27-437772
        List Price: $13.49
        Starting At: $9.49

        Sierra 18-2810 Mercury 45-50 HP Block Cover Gasket Sierra high-quality engine parts are designed to meet OEM specifications. Interchangeable with: GLM 30260 Mercury Marine 27-437772 27-43777 27-437771 27-96483

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      • Sierra 18-3863 Head Gasket Replaces 27-96281T01
        List Price: $47.21
        Starting At: $33.04

        Head Gasket for Mercury/Mariner Engines For Model 150 Replaces: OEM - 27-96542-1 Mallory - 9-63855 GLM - 35880 Pro Marine - 542-1 Redline - RL3863  

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      • 25-32546
        List Price: $3.99
        Starting At: $2.49

        Lower End Cap O Ring , Mercury - Mercruiser 25-32546 Fits: 30, 40, 50, 60, 65, 70, 75, 80, 85, 90, 115, 140, 150 hp engines Replaces: GLM 80420 Mallory 9-76546 Sierra 18-7161

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      • 18-7161
        List Price: $2.49
        Starting At: $1.99

        Sierra 18-7161 Lower End Cap O-Ring Sierra high-quality engine parts are designed to meet OEM specifications. I.D.: 3.250" Width: 0.070" Interchangeable with: GLM 80420 Mallory 9-76546 Mercruiser Stern...

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      • Sierra 18-3921 Piston Rings Replaces 39-93481A12
        List Price: $37.49
        Starting At: $28.49

        Sierra 18-3921 Mercury Standard Piston Rings Sierra high-quality engine parts are designed to meet OEM specifications. Bore Size: 3.125 / Standard Interchangeable with: GLM 14240 Mallory 9-54233 Mercury...

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      • Sierra 18-2835 Powerhead Base Gasket Replaces 27-692381
        List Price: $7.99
        Starting At: $5.99

        Mercury Powerhead Base Gasket by Sierra For Use On Engine Models 52,90,115,140HP   Replaces: Mercury - 27-69238-1 Mallory - 9-60044 GLM - 31720 Pro Marine - 319 Redline - RL2835  

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      • Sierra 18-2013 Oil Seal Replaces 26-16977
        List Price: $12.99
        Starting At: $8.99

        Sierra 18-2013 Mercury Oil Seal Sierra replacement oil seal for Mercury Marine engines and Mercruiser Stern Drives. Dimensions: Shaft Size - 0.875" O.D. - 1.250" Width - 0.188" Interchangeable...

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      • Sierra 18-3924 Piston Rings
        List Price: $35.65
        Starting At: $24.95

        Piston Rings - Special Order est. 10 Days

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      • Sierra 18-7102 O-Ring Replaces 25-62706
        List Price: $1.99
        Starting At: $1.49

        Sierra 18-7102 O-Ring Replaces 25-62706 I.D.: 0.430" or 11mm Width: 0.065" or 1.7mm Interchangeable with: Chrysler/Force/US Marine 25-F468342 GLM 80130 Johnson/Evinrude Outboard 307450 Mallory 9-76520 Mercruiser Stern...

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      • Sierra 18-0359 Induction Silencer Cover Gasket
        List Price: $10.99
        Starting At: $7.99

        Sierra 18-0359 Induction Silencer Cover Gasket Sierra replacement induction silencer cover gasket for Mercury Marine engines. Sierra aftermarket engine parts are designed to meet or exceed OEM requirements. Interchangeable...

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      • Sierra 18-1194 Rod Bearing
        List Price: $48.99
        Starting At: $34.49

        Sierra 18-1194 Rod Bearing For use on Mercury/Mariner Outboard Engines, for:  30-60HP, 2&3 Cyl., Mag II, V-135-200 & XR4 Interchangeable with: Chrysler/Force/US Marine 31-17514A2 GLM 16200 Mercury...

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      • Sierra 18-3966 Piston Rings
        List Price: $43.49
        Starting At: $30.49

        Sierra 18-3966 Mercury Piston Rings Sierra high-quality piston rings for Mercury Marine engines. Sierra engine parts are backed by Sierra's unmatched manufacturer's warranty. Bore Size: 2.565 / Standard Interchangeable...

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      • List Price: $37.99
        Starting At: $26.49

        Sierra 18-3982 Standard Piston Rings For Mercury Outboards Sierra high-quality engine parts are designed to meet OEM specifications. 18-3982 Piston Rings are for Mercury and Mariner Crossflow and Inline Outboard engines Bore Size: 3.500 /...

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      • Sierra 18-0385 Powerhead Base Gasket Replaces 27-89937
        List Price: $3.99
        Starting At: $2.99

        Sierra 18-0385 Mercury Powerhead Base Gasket For most 4.5-9.8 HP Mercury Outboard Motors. Interchangeable with: GLM 32110 Mercury Marine 27-89937 27-31557 27-30803 27-45748 Mercury Race Outboard 27-89937

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      • Sierra 18-3871 Head Gasket
        List Price: $50.99
        Starting At: $35.99

        Sierra 18-3871 Head Gasket For Mercury 175, VR4, Mag II Interchangeable with: GLM 35890 Mallory 9-63856 Mercury Marine 27-18786-1 27-18786T 27-187863

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      • Sierra 18-3902 Piston Rings
        List Price: $38.49
        Starting At: $26.99

        Sierra 18-3902 Mercury Piston Rings Sierra high-quality marine parts are designed to meet OEM specifications. Bore Size: 2.875 / STD For 3 ring pistons Interchangeable with: Mallory 9-54217 Mercury Marine 39-78816A12 39-45155A12

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      Mercury Outboard Powerhead parts for lower boat engines.