OMC Parts / Cobra Sterndrive Drawings+Video

GLM aftermarket OMC gimbal bearing

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OMC Cobra gimbal bearing
  • OEM part number 3853807-0 is for stern-drive years 1986 thur 1995. Gimbal bearing assemblies should be greased after installation. Bearing then needs greased each year or every fifty hours of use. Transom bearings turns at same speed as engine up to 45,000 rpm and are not lubricated with oil.
  • Co-manufacturer and distributor for GLM Marine aftermarket products.
  • Gimbal bearings are made with low carbon steel which can operate at higher temperatures. Larger area between the shields allows for 30% more bearing grease.
  • GLM marine after-market OMC Cobra parts transom mount gimbal bearing drawing click here.
  • Drawing including Cobra transom service kit part number 21962.
  • Bearing is used in Volvo Penta SX out-drive OEM-3853807-0 and Mercruiser out-drive OEM-30-60794A4.
21905 OMC transom gimbal bearing OEM 3853807 983937
21905 OMC transom gimbal bearing OEM 3853807 983937

P/N 21905 OMC transom gimbal bearing OEM-3853807-0 $44.29

In some cases during transon repairs the engine can drop a small amount. This happens when the drive shaft is pulled out the old bearing and engine hub. After installing new gimbal bearing the engine alignment tool may be required to line up bearing and engine hub in transom assembly. Boats that have soft stringers, were the engine mount has dropped down will require adjustment. Shims will be required to bring the engine mounting brackets back up to the original position. Engine drive shaft should then slide into new bearing and engine hub.

86560 GLM Marine aftermarket gimbal housing oil seal.JPG
86560 GLM Marine aftermarket gimbal housing oil seal

P/N 86560 Cobra gimbal bearing oil seal $11.09

90050 Cobra stern drive engine alignment tool
90050 Cobra stern drive engine alignment tool

P/N 90050 Engine alignment tool OEM-91-57797A3 $97.89

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