20405026 Valve Peg | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta valve peg used inside the mechanical fuel feed pump on D12-family engines. It forms part of the inlet or outlet check-valve assembly and works with the matching spring to maintain one-way low-pressure diesel flow.

🚤 Compatibility

• Engine Family: D, TWD, TAD

Full model list at the end of this description.

⚙️ Key Features

• Precision check-valve peg for the fuel feed pump
• Confirmed in TAD1240, TAD1241, TAD1242 and TWD1240 feed-pump assemblies
• Used with compression spring 20431469
• Controls one-way fuel movement through the pump
• Engine type: Volvo Penta 12-litre diesel

🔌 Function

Opens and closes within the feed pump to permit diesel flow in one direction and prevent pressure draining back.

⚠️ Common Signs of Failure

• Loss of fuel prime
• Low feed-pump pressure
• Engine fuel starvation under load
• Peg sticking, scoring or failing to seat

🛠️ Service Notes

• Works with return spring 20431469 in the feed-pump check valve — inspect and renew the spring at the same time, since a weak spring lets the peg leak back even if the peg itself is sound
• Confirmed for the TAD1240/1241/1242 and TWD1240 12-litre feed-pump assemblies; confirm the pump variant fitted to your engine before ordering, as feed-pump internals differ across the wider D-series range
• Check the peg's seat and bore for scoring, and make sure it moves freely with no drag once cleaned, before condemning the pump

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 20405026 → Supersedes 1547949

OEM / Related Numbers

• 1547949 earlier number superseded by this part
• 20431469 - related valve spring
• 3092460 - related fuel feed pump

Aftermarket / Verified Equivalents

• DT Spare Parts: 2.12248
• Auger: 85067
• Sampa: 035.092
• Atex-Atakul: 612-05026

📦 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