21383522 Timing Gear Plate | Genuine Volvo Penta Part

🔧 Product Description

Genuine structural timing gear plate used on Volvo Penta D12, TAD12 and TWD12 diesel engines. The plate provides an accurately machined mounting and alignment surface for the timing gear housing, associated gear-train components and adjoining engine covers.

🚤 Compatibility

• Engine Family: D, TWD, TAD

Full model list at the end of this description.

⚙️ Key Features

• Genuine Volvo Penta timing gear plate
• Precision-machined for correct gear-train alignment
• Supports the timing gear housing and adjoining components
• Suitable for marine propulsion, marine auxiliary and industrial engines
• Used across D12C, D12D, TAD12 and TWD12 engine families
• Structural engine component rather than a routine service item

🔌 Function

The timing gear plate forms a rigid reference surface for the timing gear assembly. Correct plate alignment is essential for maintaining gear mesh, cover alignment, oil sealing and the position of adjoining engine components.

⚠️ Common Signs of Failure

• Oil leakage at the plate or timing-housing joint
• Timing gear noise following incorrect assembly
• Distorted or damaged mounting faces
• Cracks around threaded mounting points
• Difficulty aligning the timing cover or gear housing

🛠️ Service Notes

• Clean both faces completely and check the plate for flatness before refitting; this seals against a machined face, so any sealant ridge or burr will leak oil
• Take care of the locating dowels or bushes — the plate positions the timing components, so it must go back on its locations rather than be centred on its bolts
• Renew the gasket and any seal carried in the plate, and apply sealant only where the workshop manual for your engine specifies
• Tighten evenly in stages to the manual's figures and sequence, then turn the engine over by hand and check the timing gears run freely with the correct backlash before starting
• Have the front seal and a full gasket set to hand before you begin — the plate rarely comes off without disturbing the parts around it

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 21383522 → Supersedes 8170561

OEM / Related Numbers

• 8170561 earlier number superseded by this part

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta D12C-A MP, D12D-A MH, D12D-A MP, D12D-B MH, D12D-B MP, D12D-C MH, D12D-C MP, D12D-D MP, D12D-E MH, D12D-E MP, D12D-F MP, D12D-G MH, D12D-G MP, D12D-H MP
• Volvo Penta TAD1241GE, TAD1241VE, TAD1241-42VE
• Volvo Penta TAD1242GE, TAD1242VE
• Volvo Penta TAD1250VE, TAD1250-52VE
• Volvo Penta TAD1240GE
• Volvo Penta TAD1251VE
• Volvo Penta TAD1252VE
• Volvo Penta TWD1240VE