Perrin Coolant Overflow Tank Black 02-25 WRX / 04-21 STI / 13-25 BRZ / GR86 / FR-S / GT86

Perrin Coolant Overflow Tank Black 02-25 WRX / 04-21 STI / 13-25 BRZ / GR86 / FR-S / GT86 | Lightweight Aluminum | Coolant Expansion Tank

Overview

The Perrin Coolant Overflow Tank is a direct replacement reservoir designed for Subaru WRX, WRX STI, and Toyota 86/BRZ platforms spanning model years 2002 to 2025. This upgrade tank manages excess coolant from your engine’s cooling system, providing reliable overflow capacity while enhancing the engine bay’s durability and aesthetics. It is ideal for enthusiasts looking to replace aging or cracked OEM plastic tanks with a more robust and visually appealing solution.

Constructed from high-grade aluminum and finished with a durable black powder coat, this tank offers superior heat resistance and corrosion protection compared to factory plastic reservoirs. Perrin’s engineering approach focuses on combining lightweight materials with functional design, including universal mounting brackets and a silicone hose for flexible installation. The tank maintains compatibility with the factory coolant cap, ensuring a seamless fit without sacrificing reliability.

For Subaru owners running performance modifications such as upgraded intercoolers or turbo piping, this overflow tank’s compact size and increased clearance help accommodate aftermarket components without interference. Its enhanced capacity and sturdy construction contribute to long-term cooling system reliability, making it a practical and stylish addition to any performance build.

Features & Specifications

This Perrin Coolant Overflow Tank is engineered for Subaru WRX, WRX STI, BRZ, GR86, FR-S, and GT86 platforms and features lightweight aluminum construction with a black powder coat finish. Constructed from corrosion-resistant aluminum, it delivers durability and heat resistance for Subaru enthusiasts seeking a reliable and OEM-compatible coolant reservoir upgrade.

• Brand: Perrin Performance
• Product: Coolant Overflow Tank Black
• Part Number: ASM-ENG-505BK
• Fitment: 02-25 WRX / 04-21 STI / 13-25 BRZ / GR86 / FR-S / GT86
• Material: Aluminum
• Finish: Black Powder Coat
• Construction: Welded Aluminum
• Origin: Made in USA

Key Benefits

• Durability: Aluminum construction resists cracking and warping common with OEM plastic tanks.
• Heat Resistance: Powder-coated finish and metal build withstand high engine bay temperatures.
• Fitment: Direct replacement design uses factory coolant cap and includes universal mounting hardware for flexible installation.
• Performance Compatibility: Compact size increases clearance for aftermarket intercoolers and turbo piping setups.
• Reliability: Corrosion-resistant materials ensure long-lasting service life under demanding conditions.
• Aesthetics: Clean black powder coat finish enhances engine bay appearance with a premium OEM+ look.

What's Included

• 1× Perrin Coolant Overflow Tank Black
• 1× 5/16" Silicone Hose, 55 inches
• Mounting Bracket Hardware for Installation
• Installation Instructions

Installation & Compatibility

Installation of the Perrin Coolant Overflow Tank is straightforward and suitable for enthusiasts with basic mechanical skills. The tank is designed as a direct replacement for the factory overflow reservoir and uses the OEM coolant cap, minimizing modification needs. Included universal mounting brackets and silicone hose provide flexibility to fit various engine bay layouts, especially beneficial for vehicles with aftermarket intercoolers or turbo piping. No special tools beyond standard hand tools are required. This upgrade does not require tuning or coolant system modifications but always verify fitment for your specific model year and trim.

• Professional Installation: DIY-Friendly
• Modifications Required: None
• Verify Compatibility: Confirm fitment for your specific year and trim level

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