Diesel Heater Fuel Pump, 12V DC Car Air Heater Diesel Fuel Dosing Pump, 22ML Aluminum Air Diesels Parking Heaters Pumps Fits for 2KW 5KW 8KW Diesels Heaters, Quiet Design, Pulse Technology

A parking heater is only as steady as the shot of fuel it gets on each pulse. Once a dosing pump drifts out of tolerance the burner runs rich, sooty and loud, and no amount of fiddling with the controller fixes it. This 12 V unit is a straight replacement rated at 22 mL per 1000 strokes.

What 22 mL per 1000 strokes tells you

Dosing pumps are measured by volume per thousand pulses because that is how the heater's controller thinks: it counts strokes, not litres. A fixed 22 mL rating means the controller's fuel map lines up with what the pump actually delivers, which is what holds flame temperature where it should be across low and high settings. Fitting a pump with a different figure to the one your heater expects is a common cause of a burner that either coughs or glazes its chamber with soot.

One voltage, aluminium case

This version is 12 V only, so check before ordering if you run a 24 V truck or a system wired at 24 V. The case is aluminium rather than moulded plastic, which suits a part living under the floor and catching everything the tyres throw up. VEVOR states a noise-reduction design and quieter running than a standard pump, but publishes no measured sound level, so read that as a relative claim rather than a number you can compare.

Key features

• 12 V DC only: matched to standard car, van and 4WD systems.
• Fixed 22 mL per 1000 strokes: pairs with controllers expecting that dosing figure.
• Aluminium housing: stands up to under-floor mounting better than moulded plastic.
• Quiet-running design: manufacturer's claim, with no decibel rating published.
• Simple swap: two line stubs and a two-wire connector, with a flow arrow to follow.
• Replacement part: for most 2 kW, 5 kW and 8 kW diesel air heaters.

Specifications

• Voltage: 12 V DC
• Output: 22 mL per 1000 strokes
• Housing material: aluminium
• Compatibility: most 2 kW, 5 kW and 8 kW diesel air heaters
• Current draw: not published by the supplier
• Noise level: not published by the supplier
• Mounting angle: not published by the supplier

Handling diesel and mounting the pump

• Diesel only. Petrol compatibility is not stated by the supplier, so this pump should not be used with petrol.
• Isolate power before wiring and protect the circuit with the fuse the heater manufacturer specifies.
• Keep sparks, flames and cigarettes well away while lines are open, and work in fresh air.
• Check both fittings for weeping before leaving the heater running, and check again after the first heat cycle.

Expect a few minutes of ticking before it lights if the lines have gone dry. A wearing part on a system you lean on in the cold, so replacing it before it fails beats diagnosing it at midnight.