11999429 Pump Element | Genuine Volvo Penta Part

🔧 Product Description

This is a genuine Volvo Penta pump element for the fuel system, the precision plunger-and-barrel assembly that sits inside the in-line fuel injection pump. It generates the high-pressure fuel pulse and meters the exact fuel quantity delivered to each injector on the engine's cylinder bank. It supersedes earlier part numbers 865798 and 864405, so it is the current replacement for those legacy elements.

🚤 Compatibility

• Engine Family: TAMD, TWD, TID, TMD, TD, TAD
• Year Range: Approximately 1970s - 2000s

Full model list at the end of this description.

⚙️ Key Features

• OEM Volvo Penta part number 11999429
• System group: Fuel System
• Net weight: 0.23 kg
• Supersedes part number 865798, which in turn superseded 864405
• Fits TD, TID, TMD, TAMD, TWD and TAD series marine and industrial diesel engines
• Matched plunger and barrel element for in-line fuel injection pump service
• Engine type: Volvo Penta inline 6-cylinder mechanical-injection diesel

🔌 Function

The pump element pressurises and meters diesel fuel inside the injection pump, delivering a precisely timed and measured charge to the injector each cycle. Its matched plunger and barrel clearance is what sets injection pressure and fuel quantity, so element condition directly governs engine power and combustion quality.

⚠️ Common Signs of Failure

• Hard starting or extended cranking, particularly when cold
• Loss of power, poor throttle response or inability to reach rated speed
• Rough running, uneven cylinder balance or misfire at idle
• Black or smoky exhaust from incorrect fuel metering
• Internal fuel leakage past a worn plunger, fuel dilution of the engine oil or falling injection pressure

🛠️ Service Notes

• The plunger and barrel are lapped as a matched pair — handle and fit them as a set, and never mix parts between elements
• Absolute cleanliness and clean fuel only: handle the lapped surfaces with clean hands or clean fuel, never with rag or anything abrasive, and do not let the working surfaces touch anything that can mark them
• Check the element slides freely and fully through its bore before assembly; a tight spot means contamination or damage, not something to be worked in
• Keep the element's index or timing marks and any shims, and set delivery timing and calibration by the workshop manual procedure for your pump — a pump with a new element has to be set up, not just assembled
• Have the work done on proper fuel injection test equipment where your pump calls for it, then vent and prime the fuel system before starting

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 11999429 → Supersedes 865798 → Supersedes 864405

OEM / Related Numbers

• 865798 earlier number superseded by this part
• 864405 earlier number superseded by this part
• 3826196 related injection pump
• 11999904 related delivery valve on other pump families
• 11998401 related small parts kit on PE6P pump families

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta TWD1210G, TWD1210P, TWD1210PB, TWD1210V
• Volvo Penta TWD1211V, TWD1211P, TWD1211G
• Volvo Penta TWD710P, TWD710PB, TWD710V
• Volvo Penta TAD730P, TAD730V
• Volvo Penta TAMD122A, TAMD122A/C
• Volvo Penta TAMD63L-A, TAMD63P-A
• Volvo Penta TAMD73P-A, TAMD73WJ-A
• Volvo Penta TD121GP, TD121GPB
• Volvo Penta TAD1230G
• Volvo Penta TAD1231GE
• Volvo Penta TAD1232GE
• Volvo Penta TAMD102A
• Volvo Penta TAMD71B
• Volvo Penta TAMD72A
• Volvo Penta TD1210G
• Volvo Penta TD71A
• Volvo Penta TID71A
• Volvo Penta TMD122A