This Perrin oil cooler kit is a must - have for your Subaru WRX (2002 - 2014) or STI (2004 - 2021). It offers amazing benefits! First, it significantly reduces engine oil temperatures, which directly extends the life of your engine. With an estimated installation time of just 2 hours, it's a breeze to set up. And it comes with a 5 - year manufacturer warranty for your peace of mind.
**Fitment Notes**: For 2002 - 2007 WRX and 2004 - 2007 STI, you'll need Subaru part number 21328AA140.
**Product Features**:
- Cuts down engine oil temperatures
- Prolongs engine lifespan
- Quick 2 - hour installation
- Comes with an installation guide
- 5 - year manufacturer warranty
**Specifications**:
- Oil cooler core dimensions: 9.5' x 4.75' x 2.2'
- Core Delta PSI: 3.0/3.5 PSI
- Core BTU/hr range: 22,000 - 29,000
- Additional oil required: 1 quart
- Mounting brackets: 6061 T6 aluminum
- Filter spacer: 6061 T6 Aluminum
- Oil cooler thermostat: 85°C activation temp
- Hose size: - 10
- Hose construction: AQP Elastomer Tube, Textile Braid Reinforcement, AQP Elastomer Cover
**What's Included**:
- (1) PERRIN Oil Cooler Core
- (1) PERRIN Oil Filter Spacer
- (1) Thermostat Oil Filter
- (1) Oil Line Assembly, Short
- (1) Oil Line Assembly, Long
- (2) PERRIN Mounting Brackets
- All installation hardware
- Warranty and instructions
This oil cooler uses a Setrab core, which maximizes heat dissipation without building up pressure. It has oil - ways interspaced with airway corrugations for great heat transfer, and 'turbulators' in the oil passages to improve oil flow. The PERRIN Performance filter adapter has an 85°C thermostat, so oil won't flow through the cooler until it reaches the right temperature. We also include a PERRIN spacer for easier installation and more hose clearance. The kit uses lightweight Aeroquip brand - 10 hoses rated for 250psi and 300°F, and they're pre - assembled for your convenience!





Using your Perrin oil cooler kit is simple. First, make sure you have all the included parts and tools ready. If you have a 2002 - 2007 WRX or 2004 - 2007 STI, don't forget to get the Subaru part number 21328AA140. The estimated installation time is about 2 hours, so set aside enough time to do it properly.
When installing, follow the included installation guide step by step. The hoses are pre - assembled, so you don't have to worry about putting them together. Just connect them carefully. And we've added clamps to the hose fittings to make sure they stay in place.
Once installed, start your engine and let it run for a while to check if there are any leaks. The oil cooler won't start working until the oil temperature reaches 85°C.
For maintenance, check the hoses and connections regularly for any signs of wear or damage. Every once in a while, check the oil level and add 1 quart of additional oil as needed. Keep the oil cooler clean to ensure it works efficiently.
Remember, this kit comes with a 5 - year manufacturer warranty. If you have any problems during this period, contact the manufacturer for assistance.