Fuel Pump Replacement 438556 388268 385781 394543 382354 395713 398338 432451 for SIERRA 18 7352 Outboard Engine

An outboard that fires up fine, runs for ten minutes and then leans out on the plane is usually telling you the fuel pump diaphragm has given up. It is a cheap component that strands boats a long way from the ramp. This replacement pump ships with its gasket and matches the OMC references below.

What the diaphragm has to survive

An outboard fuel pump runs off crankcase pulses, so the diaphragm flexes on every stroke while living in salt air and soaking in petrol. That combination is what finishes off the original. The supplier builds this one from ABS and steel and describes it as wear-proof and corrosion-proof with a long service life. No flow rate or pressure figure is published anywhere in the source, so treat it as a like-for-like replacement for the listed numbers rather than as any kind of upgrade.

Reading the number off your old pump

The supplier lists this as a replacement for OMC numbers 438556, 388268, 385781, 394543, 382354, 395713, 398338, 432451, 398387 and 433387, and for the Sierra 18-7352 pump. The product title carries only the first eight of those; both lists appear here so a match can be made on either. They are cross-references for identification, not a claim of origin, and this is an aftermarket pump. Check the casting number on your existing unit, or your engine's parts list, before ordering.

Key features

• Gasket included: the seal comes with the pump instead of being a second order.
• ABS and steel body: the supplier's stated reason is corrosion resistance in a marine setting.
• Light unit: roughly 192 g, so it costs nothing to carry a spare on board.
• Straight swap: described as replaceable without complicated steps and usable directly after fitting.

Specifications

• Part type: outboard engine fuel pump, replacement
• Material: ABS and steel
• Weight: approx. 192 g
• OMC interchange: 438556, 388268, 385781, 394543, 382354, 395713, 398338, 432451, 398387, 433387
• Also listed for: Sierra 18-7352
• Flow rate and pressure: not published

What's in the box

• 1 x fuel pump replacement
• 1 x gasket

Before you fit this pump

• Petrol and vapour are involved: isolate the fuel line and battery, and work in ventilated air well clear of ignition sources.
• Check thoroughly for leaks before the boat goes back in the water, and use a qualified marine mechanic if there is any doubt.

Worth fitting one and stowing a second in the spares box.

Returns, Refunds and Replacements

Products received faulty, damaged, or not as described are eligible for a return, refund, or replacement in accordance with local consumer laws. We are committed to ensuring all products meet the standards of quality and reliability expected by our customers. Please note that we do not accept returns or provide refunds for change of mind. We encourage you to carefully consider your purchase to ensure it meets your needs and expectations.