EJ25

EJ25 parts NZ: pistons, rods, bearings, head gaskets, studs and rebuild packages for the Subaru EJ25. The EJ25 is the 2.5 litre horizontally opposed four from Subaru's EJ family, used since the mid 1990s, and it went through several revisions that changed the head and the cam control. Working out which one you have comes first.

EJ25 with dual AVCS

STI blocks with AVCS on both cams take different cam gears and valvetrain to the earlier engines. Those parts sit under EJ20 and EJ25 STI dual AVCS.

EJ25 single AVCS

The USDM single AVCS engines are grouped on their own, so check the head casting before you order anything valvetrain related. See EJ25 single AVCS.

The full EJ25 range

Pistons, rods, bearings and gaskets that suit the EJ25 across variants are collected in one place. Browse the EJ25 range, or the EJ20 range if you are running the smaller block.

Engine packages

If the whole bottom end is coming apart, the EJ25 engine packages pull the parts into a single order.

Choosing the right parts

Deck type, AVCS type and bore size all change the part numbers, so confirm what the block actually is before buying. The Subaru EJ rebuild kit guide works through what a kit needs, and the Engine Builder can spec the rest around it.