FUEL PUMP V6 V8 LOW PRESSURE 54143074

Function and technical context

The 54143074 low pressure electric fuel pump operates in the primary supply circuit of V-architecture Volvo Penta petrol marine engines, transferring fuel from the boat tank to the injection or carburetion system at a regulated and constant pressure. Unlike mechanical pumps driven by a cam, this electromechanical unit responds directly to the signal from the engine management unit, adjusting the supply flow based on the actual fuel demands in each navigation regime. Its correct operation is decisive to maintain the air-fuel mixture within the design parameters, avoiding both the drop in propulsive power and engine outage situations at sea. A failure in this component directly compromises the operation of the propulsion system in medium and large displacement boats equipped with 4.3 liter V6 and 5.0 and 5.7 liter V8 propellers.

When to replace this part?

The most common symptoms of deterioration in a marine electric fuel pump include difficult cold starts, unexpected drops in speed under load, jerks or hesitation during acceleration and, in advanced cases, complete engine shutdown due to lack of petrol supply. Low pressure electric pumps on heavily used marine engines should be serviced at each seasonal maintenance, paying particular attention to delivery flow and operating noise, as irregular or excessive humming usually foreshadows imminent failure. Replacing the pump preventively at the first signs of loss of flow avoids a breakdown in navigation conditions far from the port, with the operating cost and safety risk that this entails.

Engine Compatibility Table

Equivalent manufacturer part numbers