Mercruiser Upper Gears for Smooth Operation

Red Rhino

New Red Rhino / Mercruiser 1998-2010 1.94:1 Upper Gear Set OEM # 43-853642A2

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Now: $389.90

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Red Rhino

New Red Rhino / Mercruiser 1998-2010 1.81:1 Upper Gear Set OEM # 43-853643A2

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Now: $469.90

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Red Rhino

New Red Rhino / Mercruiser 1998-2010 1.61:1 Upper Gear Set OEM # 43-853640A2

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Now: $469.90

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Red Rhino

New Red Rhino / Mercruiser 1.47:1 Upper Gear Set 1998-2010 OEM # 43-853641A2

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Was:

Now: $469.90

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Red Rhino

New Red Rhino / Mercruiser 1984-1997 1.50:1 Upper Gear Set OEM # 43-18411A2

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Now: $335.90

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SEI

New SEI / MerCruiser Alpha One Upper Gear Set (1972–1990) – 5.7L V8 – 1.47 / 1.50 Ratio – Replaces OEM 43-18410A4

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Now: $314.99

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SEI

New SEI / Mercruiser Alpha 1 5.0L V8 Heavy Duty Upper Gear Set (1972–1990) – 1.62/1.65:1 Ratio – SEI Designed – Fits I, R, MR, Alpha I Drives

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Now: $314.99

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SEI

New SEI / Mercruiser Alpha 1 5.0L V8 Upper Gear Set (1972–1990) – 1.62:1 Ratio – Replaces OEM #43-45814A5

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Now: $275.70

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SEI

New SEI / MerCruiser Alpha One Upper Gear Set (1972–1990) – 4.3L V6 – 1.81 Ratio – Replaces OEM 43-75325A3

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Was:

Now: $218.98

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SEI

New SEI / MerCruiser Alpha One Upper Gear Set (1972–1990) – 3.0L 4-Cylinder – 1.94 / 2.40 Ratio – Replaces OEM 43-55778A3

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Now: $206.95

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Red Rhino

New Red Rhino / Mercruiser 1998-2010 1.94:1 Upper Gear Set OEM # 43-853642A2

This listing is for a New Red Rhino / Mercruiser 1998-2010 1.94:1 Upper Gear Set OEM # 43-853642A2 and can be used with Alpha I Gen II models from 1998-2010. SHIPPING: Additional shipping fees to Alaska, Hawaii, US Territories, or International...

MSRP:

Was:

Now: $389.90

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Red Rhino

New Red Rhino / Mercruiser 1998-2010 1.81:1 Upper Gear Set OEM # 43-853643A2

This listing is for a New Red Rhino / Mercruiser 1.81:1 Upper Gear Set OEM # 43-853643A2 and can be used with Alpha I Gen II models from 1998-2010. SHIPPING: Additional shipping fees to Alaska, Hawaii, US Territories, or International Shipping will...

MSRP:

Was:

Now: $469.90

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Red Rhino

New Red Rhino / Mercruiser 1998-2010 1.61:1 Upper Gear Set OEM # 43-853640A2

This listing is for a New Red Rhino / Mercruiser 1998-2010 1.61:1 Upper Gear Set OEM # 43-853640A2. SHIPPING: Additional shipping fees to Alaska, Hawaii, US Territories, or International Shipping will be calculated after checkout. You will receive an...

MSRP:

Was:

Now: $469.90

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Red Rhino

New Red Rhino / Mercruiser 1.47:1 Upper Gear Set 1998-2010 OEM # 43-853641A2

This listing is for a New Red Rhino Mercruiser 1.47:1 Upper Gear Set (20:22 Teeth). This item replaces OEM#s 43-853641A2 and can be used with Alpha I Gen II models from 1998-2010. SHIPPING: Additional shipping fees to Alaska, Hawaii, US Territories, or...

MSRP:

Was:

Now: $469.90

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Red Rhino

New Red Rhino / Mercruiser 1984-1997 1.50:1 Upper Gear Set OEM # 43-18411A2

This listing is for a New Red Rhino / Mercruiser 1.50:1 Upper Gear Set (20:22 Teeth). This item replaces OEM#s 43-18411A2 and can be used with following years/models: Alpha I Gen I models from 1984-1990 Alpha I Gen II models from 1991-1997 (replacing 1...

MSRP:

Was:

Now: $335.90

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SEI

New SEI / MerCruiser Alpha One Upper Gear Set (1972–1990) – 5.7L V8 – 1.47 / 1.50 Ratio – Replaces OEM 43-18410A4

This SEI Marine Upper Gear Set is engineered as a direct replacement for MerCruiser Type I, R, MR, and Alpha One sterndrives from 1972–1990, designed specifically for 5.7L V8 engines. Featuring a 1.47 / 1.50 gear ratio, this precision-machined gear...

MSRP:

Was:

Now: $314.99

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SEI

New SEI / Mercruiser Alpha 1 5.0L V8 Heavy Duty Upper Gear Set (1972–1990) – 1.62/1.65:1 Ratio – SEI Designed – Fits I, R, MR, Alpha I Drives

This SEI Marine Heavy Duty Upper Gear Set is designed and manufactured by SEI specifically for Mercruiser 5.0L V8 sterndrives with 1.62:1 or 1.65:1 gear ratios. It fits Type I, R, MR, and Alpha I drives produced from 1972 through 1990 (serial numbers...

MSRP:

Was:

Now: $314.99

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SEI

New SEI / Mercruiser Alpha 1 5.0L V8 Upper Gear Set (1972–1990) – 1.62:1 Ratio – Replaces OEM #43-45814A5

This SEI Marine Upper Gear Set is a direct replacement for Mercruiser 5.0L V8 sterndrives featuring a 1.62:1 gear ratio. It fits Type I, R, MR, and Alpha I drives from 1973 through 1990, including early models prior to the Alpha Gen II design...

MSRP:

Was:

Now: $275.70

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SEI

New SEI / MerCruiser Alpha One Upper Gear Set (1972–1990) – 4.3L V6 – 1.81 Ratio – Replaces OEM 43-75325A3

This SEI Marine Upper Gear Set is a direct replacement for MerCruiser Type I, R, MR, and Alpha One sterndrives from 1972 to 1990, designed for 4.3L V6 engines. Featuring a 1.81 gear ratio, this set provides smooth, reliable power transfer and efficient...

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Was:

Now: $218.98

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SEI

New SEI / MerCruiser Alpha One Upper Gear Set (1972–1990) – 3.0L 4-Cylinder – 1.94 / 2.40 Ratio – Replaces OEM 43-55778A3

This SEI Marine Upper Gear Set is a precision-engineered replacement for MerCruiser Type I, R, MR, and Alpha One sterndrives used with 3.0L 4-cylinder engines (1972–1990). Featuring a 1.94 / 2.40 gear ratio, this set ensures smooth, quiet operation...

MSRP:

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Now: $206.95

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