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Mercruiser Upper Unit Gears

      • Sierra 18-2205 Gear Set Replaces 43-55778A3
        List Price: $397.99
        Starting At: $276.45

        Sierra 18-2205 Mercruiser 1.98:1 Upper Unit Gear Set For 1.98:1 Ratio Drives. Drive Gear = 20 teeth; Driven Gear = 24 teeth. For 120/140 (S/N 2791957 & UP) and Gen II (S/N K999999 & Below) Interchangeable with: GLM 11240 Mercruiser...

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      • Sierra 18-2259 Upper Gear Kit Replaces 43-803101T1
        List Price: $827.99
        Starting At: $418.13

        Sierra 18-2259 Mercruiser 1.98:1 Upper Gear Kit Sierra high-quality engine parts are designed to meet OEM specifications. For 4 Cylinder Engines (120/140) with a 1.98:1 Gear Ratio. Drive Gear: 20 teeth Driven Gear: 24 teeth Gear Kit...

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      • Sierra 18-2203 Gear Set
        List Price: $561.49
        Starting At: $392.99

        Mercruiser 1.65:1 Ratio Upper Unit Gear Set Replaces:  Mercury 43-45814A5 GLM 11220 Sterndrive 91-104-01CK 1.65:1 ratio. Drive gear = 24 teeth, driven gear = 24 teeth For 6 cyl inline

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      • Sierra 18-2204 Gear Set Replaces 43-75325A3
        List Price: $456.99
        Starting At: $230.72

        Sierra 18-2204 Mercruiser 1.84:1 Upper Unit Gear Set For 1.84:1 Ratio Drives. Drive Gear = 17 teeth; Driven Gear = 19 teeth. For V6 and 470/485 (4 cyl. etc.) and Gen II (S/N K999999 & Below) Interchangeable with: GLM 11230 Mercruiser...

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      • Sierra 18-2257 Upper Gear Kit
        List Price: $870.99
        Starting At: $439.80

        Sierra 18-2257 Mercruiser 1.65:1 Upper Gear Kit Sierra replacement Upper Gear Kit for Mercruiser Inline 6 Cylinder Engines with a 1.65:1 Gear Ratio. Ratio: 1.65:1 Driver Gear: 24 teeth Driven Gear: 24 teeth For: 6 cyl. inline engines Kit...

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      • Sierra 18-6351 Upper Gear Kit
        List Price: $701.99
        Starting At: $416.45

        Mercruiser 1.47:1 Ratio Upper Gear Kit For Generation II (1998 & Up) 1.47:1 Ratio (20-22 Teeth) Used with 18-2416 Complete Upper Gear Case Replaces: Mercury 43-853641A 2 GLM 11214

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      • Sierra 18-6352 Upper Gear Kit
        List Price: $701.99
        Starting At: $416.45

        Gen II & Vazer (1.94:1 & 2.40:1 Ratios) Upper Gear Set For Alpha Gen II and Vazer 1.94:1 and 2.40:1 Ratios (20 - 24 Teeth) Used with 18-2411 Drive Shaft Housing Assembly and 18-2419 Complete Upper Gear Case Replaces: Mercury 43-853642A 2 GLM 11244

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      • Sierra 18-6352K Upper Unit Gear Repair Kit
        List Price: $808.99
        Starting At: $484.95

        Gen II Upper Unit Gear Repair Kit For Gen II (1998 & Up) (s/n 0L 100040 & Up) 1.94:1 and 2.40:1 Ratio Replaces: Mercury 43-803106T 1 GLM 11247

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      • Sierra 18-6353 Upper Gear Kit
        List Price: $663.99
        Starting At: $335.12

        Sierra 18-6353 Upper Gear Kit Sierra replacement upper gear kit for Mercruiser Vazer, and Alpha I Gen II 1998 & Up (s/n 0L00040 & up) Interchangeable with: GLM 11238 Mercruiser Stern Drive 43-853643A2 Application: Mercruiser...

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