Mercruiser Upper Unit Gear Sets

Blowout
Save 8%-28% Off.
Upper Unit Gear Set for Mercruiser 43-18410A2 43-18411A2, GLM 11210 - Sierra
Your Price: $333.54
Save: $122.29
(26% Off $455.83)
Part # 18-2201 ValueShip™ Eligible
No Reviews | Write Review
Replaces OEM part #
  • MERCURY MARINE 43-18410A2
  • MERCURY MARINE 43-18411A2
For:
    Most Mercruiser V-8 Drives and Gen II(S/N OK999999 & Below) with 1.5:1 Gear Ratio(Drive Gear = 22 teeth, Driven Gear = 20 teeth). Also fits Mercruiser stern drive models: 225 (S/N 3856268 - 4200499), 260 (S/N 4898730 - 6225576), 898/228 (S/N 4782330 - 6225576), 888 (S/N 3106717 & UP), V8/MR/Alpha One (S/N 6225577 & UP).
Kit Includes:
    (1) 18-1142 Upper Pinion Bearing - replaces O.E. # 31-32573A1
Upper Unit Gear Set - Sierra
Sale-a-palooza Price: $301.49
Save: $27.51
(8% Off $329.00)
Part # 18-2203 ValueShip™ Eligible
Hurry! Only 1 left in stock
No Reviews | Write Review
Replaces OEM part #
  • MERCURY MARINE 43-45814A5
For:
    Mercruiser 6 Cyl. Inline (S/N K999999 & BELOW) with 1.65:1 Gear Ratio (Drive Gear = 24 teeth, Driven Gear = 24 teeth)
Upper Unit Gear Set - Sierra
Sale-a-palooza Price: $245.69
Save: $63.31
(20% Off $309.00)
Part # 18-2204 ValueShip™ Eligible
No Reviews | Write Review
Replaces OEM part #
  • MERCURY MARINE 43-75325A3
For:
    Mercruiser V-6 and 470/485 (4 Cyl. etc.) and Gen II (S/N K999999 & BELOW) with 1.84:1 Gear Ratio (Drive Gear = 17 teeth, Driven Gear = 19 teeth).
Upper Unit Gear Set - Sierra
Sale-a-palooza Price: $247.49
Save: $98.22
(28% Off $345.71)
Part # 18-2205 ValueShip™ Eligible
Hurry! Only 1 left in stock
No Reviews | Write Review
Replaces OEM part #
  • MERCURY MARINE 43-55778A3
For:
    120/140 (S/N 2791957 & UP) and Gen II (S/N K999999 & BELOW) with 1.98:1 Gear Ratio (Drive Gear = 20 teeth Driven Gear = 24 teeth).
Upper Gear Kit - Sierra
Sale-a-palooza Price: $388.79
Save: $35.21
(8% Off $424.00)
Part # 18-6350 ValueShip™ Eligible
Hurry! Only 1 left in stock
No Reviews | Write Review
Replaces OEM part #
  • MERCURY MARINE 43-853640A2
For: Mercruiser Gen II Upper (1998-up) Serial Number OL10040-UP, for 1.62/2.00:1 gear ratios (24-24 Teeth).
Upper Gear Kit - Sierra
Sale-a-palooza Price: $388.79
Save: $35.21
(8% Off $424.00)
Part # 18-6351 ValueShip™ Eligible
Hurry! Only 1 left in stock
No Reviews | Write Review
Replaces OEM part #
  • MERCURY MARINE 43-853641A2
For: Mercruiser Alpha I (Gen II) (1998-up) Serial Number range 0L100040-UP, for gear ratios 1.47:1 (20-22 Teeth).
Upper Gear Kit - Sierra
Sale-a-palooza Price: $388.79
Save: $35.21
(8% Off $424.00)
Part # 18-6352 ValueShip™ Eligible
Hurry! Only 1 left in stock
No Reviews | Write Review
Replaces OEM part #
  • MERCURY MARINE 43-853642A2
For: Mercruiser Alpha I (Gen II ) (1998-up) Serial Number range 0L100040-up, with gear ratios 1.94:1, 2.40:1 (20-24 Teeth)
Upper Gear Kit - Sierra
Sale-a-palooza Price: $356.39
Save: $32.61
(8% Off $389.00)
Part # 18-6353 ValueShip™ Eligible
No Reviews | Write Review
Replaces OEM part #
  • MERCURY MARINE 43-853643A2
For: Mercruiser Alpha I Gen II, Serial Number range 1998-up/0L00040-UP, with Gear ratios 1.81:1 (17-19 Teeth).
Sierra
This product ships in 1 business day.

Add to Cart and enter your Postal Code to determine the shipping charges and estimated delivery date.
* Most products and orders leave our warehouse in 1 business day. However, select items may take more processing time. Alaska and Hawaii orders please add 1 additional warehouse processing day.
Standard Shipping Policies
Sale-a-palooza ends July 31st - Shop now for the best selection and savings!