21426900 Cover | Genuine Volvo Penta Part

🔧 Product Description

Genuine cover used in the engine oil-cooler and lubrication-system housing of selected Volvo Penta D16C diesel engines. It belongs to the Volvo cover family 20581617, 20746923, 21100906 and 21122228.

🚤 Compatibility

• Engine Family: TAD, D, TWD
• Serial Range: SN2016047781-

Full model list at the end of this description.

⚙️ Key Features

• D16C engine-oil cooler housing cover
• Factory oil and coolant passage geometry
• Precision gasket and mounting surfaces
• Designed for high oil pressure and coolant temperature
• Documented Volvo cover reference family
• Also supersedes Volvo part numbers 20746919, 21039517 and 21100903

🔌 Function

The cover closes the oil-cooler housing and directs engine oil and coolant through their separate passages.

⚠️ Common Signs of Failure

• Oil or coolant leakage
• Oil mixing with coolant
• Warped or cracked cover
• Restricted passage

🛠️ 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

OEM Supersession Chain

• 21426900 → Supersedes 21193230

OEM / Related Numbers

• 21122228 related reference
• 21100906 related reference
• 20746923 related reference
• 20581617 related reference

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta D16C-A MG, D16C-A MH, D16C-B MH, D16C-C MH, D16C1-E MG, D16C1-F MG, D16C2-E MG, D16C2-F MG, D16C-D MH, D16C1-E MH, D16C1-F MH, D16C2-E MH, D16C2-F MH
• Volvo Penta TAD1640-42GE-B, TAD1640GE, TAD1640VE-B, TAD1640-42VE-C
• Volvo Penta TAD1641VE-B, TAD1641GE, TAD1641VE
• Volvo Penta TAD1642VE-B, TAD1642GE, TAD1642VE
• Volvo Penta TAD1650VE-B/51VE, TAD1650GE, TAD1650VE
• Volvo Penta TAD1643VE-B, TAD1643VE
• Volvo Penta TAD1651GE
• Volvo Penta TAD1660-62VE
• Volvo Penta TAD1662VE EU5
• Volvo Penta TAD1670-72VE
• Volvo Penta TWD1643GE
• Volvo Penta TWD1644-45GE
• Volvo Penta TWD1652GE
• Volvo Penta TWD1653GE
• Volvo Penta TWD1663GE
• Volvo Penta TWD1672-1673GE
• Volvo Penta TWD1682-83GE
• Volvo Penta TWD1683VE