21113993 Check Valve | Genuine Volvo Penta Part

🔧 Product Description

A genuine Volvo Penta fuel non-return / overflow valve engineered for the fuel-filter and low-pressure supply system on D8 and other Volvo Penta diesel engines. This component is a spring-loaded check/overflow valve maintaining fuel direction and residual supply pressure. Correct selection requires the complete Volvo Penta product number and serial number because adjoining components, mounting arrangements and production revisions can change within the same engine or transmission family.

🚤 Compatibility

• Engine Family: D, TAD, TADH

Full model list at the end of this description.

⚙️ Key Features

• Spring-loaded valve permits flow in the designed direction
• Maintains residual pressure and prevents fuel drain-back
• Calibrated opening pressure supports stable fuel supply
• Thread and sealing interface match the filter housing
• Internal valve materials are compatible with diesel fuel

🔌 Function

Prevents reverse fuel flow and controls overflow/return behaviour so the low-pressure circuit remains primed and maintains the intended feed pressure.

⚠️ Common Signs of Failure

• Extended cranking after the engine stands
• Fuel system losing prime
• Low feed pressure or unstable idle
• Valve stuck closed causing excessive restriction
• Fuel leakage around the threaded connection

🛠️ Service Notes

• Note which way round the valve sits before removing it and fit the replacement the same way — a non-return valve installed backwards will block flow entirely or allow the drain-back it was there to prevent
• Work clean and fit new sealing washers or O-rings on the connections; a small amount of debris is enough to hold a check valve off its seat
• Check the new valve moves freely and seals in the reverse direction before fitting, and blow or flow test it in the correct direction if you are unsure of its orientation
• Hold the valve by its hex or flats when tightening, never by clamping the body, and tighten to the figure given in the workshop manual for your engine
• Run the system afterwards and confirm the symptom has gone as well as that the joints are dry

🔄 Supersession & Cross Reference

OEM / Related Numbers

• 21961468 - fuel filter reference in related diagrams
• Fuel hose 3889699 and serial-specific filter housing components

Other-Brand OEM Numbers

• Bosch 1 417 413 048 / 1417413048

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta D13C4-B MH, D13C1-B MH, D13C2-B MP, D13C1-A MP, D13C2-A MP, D13C3-A MP, D13C4-A MP, D13B-A MP, D13B-H MP, D13B-G MP, D13B-L MP, D13B-E MG, D13B-E MG (FE), D13B-E MH, D13B-E MH (FE), D13B-F MG, D13B-F MG (FE), D13B-K MP, D13B-N MH, D13B-N MH (FE), D13B-B MP, D13B-D MP, D13B-J MP, D13B-M MP, D13B-C MP, D13C4-B MP, D13C5-B MP, D13C6-A MP, D13C1-A MH, D13C2-A MH, D13C1-B MG, D13C3-B MG, D13C2-B MG, D13C4-B MG, D13C5-A MP, D13C2-A MG, D13C1-A MG, D13C7-B MP, D13C8-B MP, D13C9-A MP
• Volvo Penta D11C1-A MP, D11C3-A MP, D11C2-A MP, D11C4-A MP, D11B3-A MP, D11B4-A MP, D11A-C, D11B2-A MP, D11A-C MP, D11A-D MP, D11A-C (IPS), D11B1-A MP
• Volvo Penta D9A2J, D9A2G, D9A2L MH, D9A2D, D9A2B, D9A2F, D9A2K, D9A2H, D9A2M MP, D9A2A, D9A2C, D9A2E
• Volvo Penta D12D-A MG, 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 D16C1-E MG, D16C1-F MG, D16C2-E MG, D16C2-F MG, D16C1-E MH, D16C1-F MH, D16C2-E MH, D16C2-F MH
• Volvo Penta D8A2-A MP, D8A5-A MH, D8A6-A MH, D8A5-A MG, D8A6-A MG, D8A4-A MP, D8A1-A MP, D8A3-A MP
• Volvo Penta TAD840GE, TAD840-43VE
• Volvo Penta TAD540-42VE
• Volvo Penta TAD550-51VE
• Volvo Penta TAD552VE
• Volvo Penta TAD850-52VE
• Volvo Penta TAD853VE
• Volvo Penta TAD880-84VE
• Volvo Penta TADH880-84VE