21351088 Cover | Genuine Volvo Penta Part

🔧 Product Description

Genuine composite front timing cover for GM-based Volvo Penta 4.3-litre V6 petrol marine engines using the cover configuration with a crankshaft-sensor opening. The cover closes the timing-chain area and supports the front crankshaft seal and sensor arrangement.

🚤 Compatibility

Typically suits:

• Volvo Penta 4.3OSi-GF
• Volvo Penta 4.3GL-D
• Volvo Penta 4.3GL-E
• Volvo Penta 4.3GL-EF
• Volvo Penta 4.3GL-G
• Volvo Penta 4.3GL-GF
• Volvo Penta 4.3GXi-E
• Volvo Penta 4.3GXi-EF
• Volvo Penta 4.3GXi-F
• Volvo Penta 4.3GXi-FF
• Volvo Penta 4.3GXi-G
• Volvo Penta 4.3GXi-GF
• Volvo Penta 4.3OSi-E
• Volvo Penta 4.3OSi-EF
• Volvo Penta 4.3OSi-F
• Volvo Penta 4.3OSi-FF
• Volvo Penta 4.3OSi-G

⚙️ Key Features

• 4.3L GM V6 composite timing cover
• Crankshaft-position sensor opening
• Factory seal, bolt and oil-pan interface
• Marine petrol-engine application

🔌 Function

The cover encloses the timing chain and sprockets, retains engine oil and provides the mounting and sealing locations for the front crankshaft seal and position sensor.

⚠️ Common Signs of Failure

• Oil leakage around the cover perimeter
• Oil leakage at the front crankshaft seal
• Cracked composite housing
• Damaged crankshaft-sensor mounting point
• Warped oil-pan sealing edge

🛠️ Service Notes

• Clean both sealing faces back to clean metal and check the cover for distortion, cracks or pulled bolt holes before refitting — a warped flange will not seal even with a new gasket
• Where the joint uses a gasket, seal or O-ring, always fit a new one and seat it dry unless the workshop manual for your engine specifies a sealant; never try to make a poor joint tight with extra sealant
• Tighten the fasteners progressively and evenly, working out from the centre, to the figure given in the manual for your engine — pressed steel, alloy and plastic covers distort easily if pulled down hard or unevenly
• If the cover carries a shaft seal or bearing, support it square to the shaft as it goes on so the seal lip is not nicked or rolled over
• Check that any breather, drain or oil return passage in the cover is clear before final tightening, and look for leaks once the engine has been run up to temperature

🔄 Supersession & Cross Reference

Other-Brand OEM Numbers

• MerCruiser 809893
• MerCruiser 809893T
• MerCruiser 888777T
• MerCruiser 8M0069799

Aftermarket / Verified Equivalents

• Dorman-style aftermarket reference: 635-502
• Aftermarket 4.3L V6 timing-cover assemblies cross-referencing 809893 / 888777T / 8M0069799

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging