Fuel Pump Diaphragm Kit – Fits Mercury/Mariner/Force 30-275 HP (Replaces 857005A1, 42990A10) 38HP What is the difference between

What is the difference between this pulley and the OEM version

and free of any oil

Engineered for accuracy

This is a high-quality aftermarket replacement component

This kit is designed specifically for pre-Alpha and Alpha series MerCruiser sterndrives within the specified serial number ranges

Fuel Pump Diaphragm Kit – Fits Mercury/Mariner/Force 30-275 HP (Replaces 857005A1, 42990A10) 38HP What is the difference betweenProduct Details This Fuel Pump Diaphragm Kit Fits Mercury Mariner Force 30 275 HP (Replaces 857005A1, 42990A10) is designed to restore fuel system performance in a wide range of outboards. It is compatible with Mercury Mariner 30 275 HP 2 stroke models (19781999) and select 4 stroke engines featuring square or triangular fuel pumps, as well as Force Chrysler 40 150 HP 2 stroke outboards (19911999). The kit serves as a direct interchange for multiple