High-Flow Oil Filters

The best oil filter choice in this collection is the Subaru OEM filter listed for your exact WRX generation — one version covers the 2015-2026 WRX and another the 2002-2014 WRX and 2004-2021 WRX STI. Alongside the filters themselves, this small collection carries the adapter hardware performance builds need, including a WIX racing filter adapter kit for the R35 GT-R and a GReddy oil block adapter.

An oil filter traps the contaminants that circulate as oil does its work, and on a turbocharged engine it is a cheap part protecting expensive internals. Filters are not interchangeable between generations just because they thread on, so the fitment range in the product title is the detail to trust.

For a straightforward service, start with the Subaru OEM oil filter for the 2015-2026 WRX. Subaru OEM is the factory-parts route: components made to the car maker’s own specification for the models named, which is why OEM filters remain the default choice for stock and lightly modified cars. Pair it with the correct grade from the oil change packages and a routine service needs nothing exotic.

PRL Motorsports is the performance-hardware name in this collection, known for bolt-on intake, intercooler, and engine-bay parts for Honda and Subaru platforms. Here that focus shows in specialised oil-system hardware: the WIX Racing oil filter adapter kit for the R35 GT-R VR38DETT, and a K24Z oil filter housing block-off plate kit for Honda engine builds. These are builder parts, chosen for a specific engine program rather than a routine service.

GReddy is one of the long-established Japanese performance brands, recognised across turbocharging, exhaust, and engine accessories. Its contribution here is an engine oil block adapter, M20 x 1.50 with -10AN fittings, listed as a universal part — the kind of sandwich-style adapter builders use at the filter location on custom oil setups. Browse the broader oil system range for pans, coolers, and related hardware, and read our EJ257 engine guide for context on the engine the older filter serves.

Check your year and model against the title first: the two Subaru OEM filters split at 2015, and the adapter parts are engine-specific.

Which oil filter fits my WRX?

This collection lists one Subaru OEM filter for the 2015-2026 WRX and another for the 2002-2014 WRX and 2004-2021 WRX STI. Match your car to the range in the product title; if your model is not named, do not assume it fits.

Should I use an OEM filter on a modified car?

For stock and lightly modified cars, the OEM filter listed for your generation is the safe, specification-correct choice. Built engines sometimes run adapter hardware like the parts here, as part of a wider oil-system plan.

What does an oil block adapter do?

It fits at the oil filter location and adds ports or connections to the oil circuit, which is why builders use adapters on custom setups. The GReddy adapter here is specified M20 x 1.50 with -10AN fittings, so thread and fitting sizes must match your engine.

How often should I change my oil filter?

Fit a new filter at every oil change — a fresh filter with old oil, or fresh oil through a loaded filter, defeats the purpose of the service. Follow your car’s service schedule for the interval itself.