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Mercruiser Driven Gear Bearing 4 / 6 cylinder / V6

GLM roller bearing # 21540 / Sierra # 18-1161 Mercruiser Mercury OEM # 31-35990A1 Driven gear tapered roller bearing fits drive shaft for 1.65,1.84 and 1.98 gear ratio Tech support Exploded view drawings Does not work with 1.47 / 1.50 V8 models except 888 and 225-S models (1974-1975)

Customers who ordered P/N 21540 also purchased:
39622 mounting gasket	Outdrive gasket P/N 39622 or OEM 27-94996A2 is required when installing the outdrive back on to the boat. The mating surface areas of both the upper gear housing and the bell housing may have pitting or slight imperfections - make sure to use a sealing compound on both sides of the gasket for a perfect fit. Apply liberally. $9.95
87500 Seal kit	Seal kit P/N 87500 or OEM 26-32511A1 contains all oil seals, o-rings and gaskets for the upper gear housing. When performing various repairs on the upper housing, during disassembly some seals or gaskets may be damaged and can't be re-used. Make sure to replace any damaged seals with the replacements included in this kit. It is recommended to use a compound on the gaskets and o-rings, and a loctite product on the oil seals if necessary. $24.99
11220 6-cylinder gears 43-45814A5	Drive shaft housing gears are compatible with all 4 cylinder, inline 6, V6 and V8 Mercruiser models. All ratios are available and compatible with models from 1970 to present. $275.99

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