21344784 Stud | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta stud used to locate and retain the valve cover or related cylinder-head hardware on TAD1240GE and D12D-A MG engines. The fixed stud provides repeatable alignment and thread engagement for the cover fastener without repeatedly loading the cylinder-head threads.

🚤 Compatibility

• Engine Family: D, TWD, TAD

Full model list at the end of this description.

⚙️ Key Features

• Stud locating and retaining valve cover or related cylinder-head hardware on TAD1240GE and D12D-A MG engines
• 0.093 kg
• Supersedes 8148863, catalogued earlier as a spacer screw
• Listed for 27 applications across the D, TWD and TAD ranges
• 9 used per assembly

🔌 Function

Provides a fixed threaded location for the valve cover or related cylinder-head hardware, giving repeatable alignment and thread engagement without loading the head threads each time.

⚠️ Common Signs of Failure

• Oil weeping from the cover joint at one fixing
• Cover fixing that will not tighten, or turns without gaining load
• Stud found bent, or its thread found stripped or pulled
• Stud found unscrewing with the nut instead of staying put
• Head thread found damaged where the stud has pulled on strip-down

🛠️ Service Notes

• It replaces what was catalogued as a spacer screw, so the fastening arrangement may not match the part in your hand - check the illustration before ordering by the old number
• Set the stud to the specified protrusion and check the head thread before fitting; a stud that keeps backing out means the thread, not the stud

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 21344784 → Supersedes 8148863

OEM / Related Numbers

• 8148863 earlier number superseded by this part
• 20545669 - valve cover
• 21070576 - sealing strips
• 21123014 - sealing strips
• 20807510 - oil filler cap

📦 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 MG, D12D-A MH, D12D-A MP, D12D-B MH, D12D-B MP, D12D-C MH, D12D-C MP, D12D-D MP, D12D-E MG, 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