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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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      Mercury Outboard Gearcase Bearings

      • Sierra 18-1117 Pinion Bearing
        $53.99
        $37.99

        Sierra 18-1117 Lower Unit Pinion Bearing Sierra high-quality engine parts are designed to meet OEM specifications. For use on Chrysler/Force/US Marine, Johnson/Evinrude Outboards, Mercruiser Stern Drives, Mercury Marine and OMC Stern Drives. Fits MR,...

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      • Sierra 18-1143 Tapered Roller Bearing
        $49.99
        $34.99

        Sierra - 8M0146566 Tapered Roller Bearing Fits: IA/IB/IC & EZ Shift, 120, 140, & 160, MR, Alpha One & Gen II (s/n 0K999999 & Below) Interchangeable with: GLM 21580 Mallory 9-75107 Mercruiser Stern...

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      • Sierra 18-1158 Carrier Bearing
        $13.99
        $7.99

        Lower Unit Needle Bearing - Special Order est. 10 Days Fits prop shaft bearing carrier 40 HP and Up. Replaces: Mallory 9-75112 Mercury 31-30956T OMC 0387247 Aqua Power 2126 GLM 11410 Redline RL1158 Sterndrive 93-102-12...

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      • Sierra 18-1118 Drive Shaft Bearing
        $44.99
        $31.49

        Sierra 18-1118 Drive Shaft Bearing Sierra aftermarket engine parts are manufactured to meet or exceed OEM requirements. Interchangeable with: Chrysler/Force/US Marine 31-42677A1 GLM 22960 Mercury Marine 31-42677A1

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      • Sierra 18-1155 Ball Bearing
        $52.99
        $39.99

        Sierra 18-1155 Ball Bearing Fits IA/IB/IC & EZ Shift, MC-I, R, MR, Alpha One & Gen II Interchangeable with: GLM 21620 Mallory 9-75114 Mercruiser Stern Drive 30-35914 30-17927 30-88957A1 30-88957 30-88957T Mercury Marine 30-88957T 30-88957...

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      • Sierra 18-1156 Foward Gear Bearing
        $51.99
        $36.49

        Sierra 18-1156 Forward Gear Bearing The Sierra 18-1156 Forward Gear Bearing is for use with Mercruiser Sterndrives, Mercury Marine, Chrysler/Force/US Marine, and Honda Outboards. Interchangeable with: Chrysler/Force/US...

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      • Sierra 18-1154 Ball Bearing
        $28.49
        $21.49

        Upper/Lower Main Bearing Fits: 115/140/150 Inline 6 30/40/50/60/75/80 HP Replaces: Mallory 9-51202 Mercury 30-63742T OMC 0377139 AQU 1988 GLM 21860 Redline RL1154

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      • Sierra 18-1115 Pinion Bearing
        $8.99
        $5.99

        Sierra 18-1115 Pinion Bearing Sierra aftermarket engine parts are manufactured to meet or exceed OEM requirements. Fits: I Drive, 80 & 90 Interchangeable with: GLM 22780 Mercruiser Stern Drive 31-29982 31-32898 Mercury...

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      • Sierra 18-1190 Ball Bearing
        $54.99
        $32.49

        Sierra 18-1190 Ball Bearing Sierra high-quality ball bearing. Reverse gear for Force/Mercury/Mariner 25-60 HP (2, 3 cyl., & 4-Stroke) including 30 Jet - 45 Jet. Interchangeable with: Chrysler/Force/US...

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      • Sierra 18-1153 Ball Bearing
        $21.99
        $16.99

        Sierra 18-1153 Ball Bearing for Mercury Sierra replacement Mercury Ball Bearing. Interchangeable with: GLM 21840 Mallory 9-75113 Mercury Marine 30-20464 30-49313 30-54215 30-63326 30-63326T

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      • Sierra 18-1150 Needle Roller Bearing
        $70.99
        $49.49

        Sierra 18-1150 Mercruiser Needle Roller Bearing Sierra high-quality engine parts are designed to meet OEM specifications. Fits MC-I & R drives Interchangeable with: GLM 21600 Mercruiser Stern...

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      • Sierra 18-1159 Tapered Roller Bearing
        $37.99
        $26.99

        Sierra 18-1159 Tapered Roller Bearing Sierra replacement tapered roller bearing for Mercury and Mercruiser engines. Interchangeable with: GLM 21590 Mallory 9-75120 Mercruiser Stern Drive 31-35928T1 31-35928A1 Mercury...

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      • Sierra 18-1166 Tapered Roller Bearing
        $49.99
        $34.99

        Sierra 18-1166 Tapered Roller Bearing Sierra aftermarket engine parts are manufactured to meet or exceed OEM requirements. Interchangeable with: GLM 21830 Mallory 9-75110 Mercury Marine 31-78172A1

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      Mercury OEM Engine Parts Finder