Mercruiser gears (upper gearcase) parts drawing

GLM aftermarket heavy duty Mercruiser gears. Gear sets for 5.0 or 5.7 liter stern drives

GLM Marine aftermarket Mercruiser gears with heavy duty 20/22 V8 for gear ratio of 1.50
Drive shaft housing gears set for all Mercruiser outdrive 1970 thru 1997
OEM # 43-18411A2 gear set comes with heavy duty larger bearing # 21560 for pinion gear
Gear set is great for higher horsepower 5.7 liter GM motors or 5.8 litre Ford motors but is not recommended for 7.5L big blocks with 300 plus horsepower they would use a Mercruiser Bravo stern drive or TRS outdrives
GLM tool # 90100 bearing retainer wrench installs and removes drive shaft bearing retainer to repair broken gears in upper gearcase outdrive units

# 21560 Bearing is included with 20/22 gears

11210 Mercruiser gears V8 22-20 gear ratio.jpg

# 11210 For Mercruiser Outdrives V8 20/22 Gear Sets Ratio 1.5 1970 thru 1997

# 11210 OEM # 43-18411A2 $272.98

Heavy duty 20/22 (1.50 or 1.47 Ratio)

For MC-1,R,MR,Alpha One & Gen ll (1970-1997)

GLM Marine aftermarket Mercruiser parts

11220 Mercruiser gear set 1970-1997 6 cylinder.jpg

# 11220 Mercruiser gear set 1970 thru 1997 24/24 In Line 6 Cylinder Ratio 1.65 OEM # 45814A5

# 11220 OEM # 43-45814A5 $ 240.98

6 Cyl. in-line 6 with a gear ratio of 1.65 or 1.65 comes without bearing for years 1970 thru 1997 24/24 gear sets OEM # 43-45814A5 T.C.Electronics order # 11220

Aftermarket 17/19 Ratio 1.84 Mercruiser gears

11230 Merc gear sets V-6 470-485 17-19.jpg

# 11230 Merc. upper gear set 1970 thru 1997 V-6 and 470 / 485 OEM # 43-75325A3

# 11230 OEM 43-75325A3 $233.98

V6 and 470 / 485 use 17/19 gear ratio 1.84 and 1.81

Aftermarket Mercruiser outdrive gears Inline 4 Cyl

11240 Merc 20-24 ratio 1.98 4-cylinder.jpg

# 11240 Upper gear set for 20 / 24 Inline 4 Cyl. 1.98 or 1.81 gear ratio

# 11240 OEM # 43-55778A3 $222.98

20 / 24 Inline unit for use with 4 Cyl. 1.98 or 1.81 gear ratios OEM # 43-55778A3 years 1983 thru 1990 our order number # 11240

Tech Support Help

The i need parts page to identify aftermarket Mercruiser parts was added to help simplify locating stern drive tech drawings

Exploded tech service drawing pages have illustrations and photos of each outdrive component

If more service help is required, contact our service tech for help with troubleshooting your Mercruiser stern drive unit at (416) 751-7326

Please have horsepower and year of Mercruiser stern drive boat ready when calling

omc@sterndrive.info

Do you need tech help drawing?

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9:30am - 5pm (416) 751-7326 Toll free number (877) 652-7278 Core trade-in shipping address, outdrive repair and Mercruiser parts