Perrin PSP-OIL-111 Oil Cooler Kit for 2015-2021 Subaru WRX/STI

Vehicle Fitment

• 2015-2021 Subaru WRX (all trims, manual/CVT) - Engine Bay
• 2015-2021 Subaru WRX STI - Engine Bay

Fitment Notes

• Front-mount engine oil cooler with thermostat housing-no tuning needed
• Designed for stock or mild builds, ideal under 450-500 hp

Features

• Precision CNC-bracketed installation with core-protection plate
• Thermostatic oil cooler housing activates at ~85 °C
• High-efficiency bar-and-plate core (approx. 9.5"x4.75"x2.2")
• Match-grade 6061 T6 aluminum components for light weight and strength
• Includes fittings and -10AN braided oil lines
• Mounting hardware designed for clean engine bay integration
• 5-year manufacturer warranty

Specifications

• Part Number: PSP-OIL-111
• Core Dimensions: ~9.5" x 4.75" x 2.2"
• Oil Line Size: -10AN; Additional Oil Capacity: ~1 qt
• Pressure Drop: ~3-3.5 psi; Cooling Capacity: 22-29k BTU/hr
• Thermostat Activation: ~85 °C
• Kit Weight: ~12.2 lb

Included Components

• 1x Perrin oil cooler core
• Thermostat-enabled oil filter housing
• 2x Aluminum mounting brackets
• 1x Filter spacer
• 1x Thermostat adapter
• 2x Braided oil lines (-10AN)
• All required hardware and instructions

Product Description

The Perrin PSP-OIL-111 is a comprehensive engine oil cooler kit designed for 2015-2021 Subaru WRX and STI models. It installs seamlessly via the oil filter housing and features a thermostatic bypass for optimal oil temperatures.

Equipped with a high-capacity bar-and-plate core, robust aluminum brackets, and braided -10AN lines, it reliably reduces oil temps--especially under track use or high-performance driving. Rated for reliability up to around 500 hp, the PSP-OIL-111 delivers professional-grade cooling with a long warranty and clean engine bay installation.