Subaru 42021AJ090 Fuel Pump Module Assembly

The Subaru 42021AJ090 fuel pump module assembly is an OEM replacement unit designed for 2010-2011 Subaru Legacy and Outback models equipped with the 2.5L H4 naturally aspirated engine. This module integrates a turbine-type electric fuel pump, fuel level sender, and strainer within a single housing for in-tank installation. It operates at 12V DC and delivers gasoline at the pressure and flow rates required by the EJ25 engine management system. The part supersedes 42021AJ091 and cross-references to aftermarket numbers P76798M, FG1865, E9037M, SP4084M, and FPE-857. The assembly ensures reliable cold-start performance and consistent fuel delivery under varying load conditions.