Killer B Upper Turbo Coolant Reservoir V2 Black Barbed Fittings for 02-07 WRX / 04+ STI

SKU: UTCRV2BA-B

Killer B Motorsport Upper Turbo Coolant Reservoir V2 Black Barbed Fittings for Subaru WRX & STI

The Killer B Motorsport Upper Turbo Coolant Reservoir V2 (SKU: UTCRV2BA-B). Engineered with precision and crafted for enthusiasts, this reservoir is the definitive choice for 2002-2007 Subaru WRX and 2004-2021 Subaru STI owners seeking superior cooling efficiency and a sleek engine bay aesthetic. Designed to outperform all competitors, this reservoir is the best choice for maximizing turbocharged performance while ensuring long-term durability and fitment perfection.

Why Killer B Upper Turbo Coolant Reservoir V2?

The Killer B Upper Turbo Coolant Reservoir V2 stands head and shoulders above other aftermarket options. Unlike generic coolant tanks or relocated OEM solutions, this reservoir is purpose-built for turbocharged Subaru EJ motors, addressing the unique challenge of air entrapment in the cooling system. Its innovative design retains the OEM high-point location to prevent overheating a common issue with less thoughtful alternatives. With a focus on performance, clearance for rotated turbo setups, and a premium aesthetic, this reservoir is the top choice for enthusiasts who demand the best.

Key Features and Performance Benefits

• Cooling Efficiency: Utilizes the OEM high-point location to ensure proper thermal siphoning and air elimination, preventing overheating issues that plague Subaru WRX and STI engines after radiator replacements.
• Perfect Fit for Rotated Turbo Setups: Provides ample clearance for large turbo inlets and piping, making it the ideal solution for modified WRX and STI builds with rotated turbo configurations.
• Superior Build Quality: Features a full 3D CNC-machined neck and body, hand TIG-welded brackets, and a 1/4” thick CNC laser-cut bracket for unmatched durability and precision.
• Sleek Aesthetics: The black powder-coated finish enhances your engine bay’s appearance, replacing the bulky OEM plastic tank with a streamlined, professional look.
• Versatile Barbed Fittings: Includes removable barbed fittings for easy installation and compatibility with OEM or aftermarket coolant hoses, ensuring a leak-free connection.
• OEM Integration: Retains the Subaru OEM filler cap (not included) for proper cooling system function, ensuring compatibility and reliability.
• Made in the USA: Crafted with American engineering and quality, backed by Killer B Motorsport’s reputation for excellence in Subaru performance parts.

What’s Included in the Purchase

• Killer B Upper Turbo Coolant Reservoir V2 (Black Finish, SKU: UTCRV2BA-B): CNC-machined aluminum reservoir body with a durable black powder-coated finish.
• Removable Barbed Fittings: Pre-installed barbed fittings for seamless integration with OEM or aftermarket coolant hoses.
• Hand TIG-Welded Mounting Bracket: 1/4” thick CNC laser-cut bracket for secure and precise installation.
• Installation Hardware: All necessary mounting hardware for a straightforward, bolt-on installation.
• Note: OEM Subaru filler cap is not included and must be purchased separately or reused from your existing setup.

Vehicle Fitment

The Killer B Upper Turbo Coolant Reservoir V2 is specifically designed for the following Subaru models with EJ motors:

• 2002-2007 Subaru WRX (All metal WRX turbo intake manifolds)
• 2004-2021 Subaru STI (All metal STI turbo intake manifolds)

Part Number

• SKU: UTCRV2BA-B

Why It’s the Best Choice

Unlike other aftermarket reservoirs or relocation kits that require extensive fabrication or compromise cooling efficiency, the Killer B V2 Reservoir is a plug-and-play solution that maintains OEM functionality while enhancing performance. Its compact design eliminates interference with rotated turbo setups, and the high-quality aluminum construction ensures durability far beyond the OEM plastic tank. Customer reviews consistently praise its fitment, finish, and ability to resolve coolant-related issues, making it the go-to choice for Subaru enthusiasts.

Installation Notes

• Easy Installation: Designed to bolt directly into the OEM mounting points, requiring minimal modifications. A minor trim of coolant hoses may be necessary for perfect fitment.
• Pro Tip: Use high-quality silicone hoses and Corbin hose clamp pliers for a secure, leak-free installation. Check all threaded fittings for cleanliness before installation to ensure a tight seal.
• Compatibility Warning: For optimal performance, use only the OEM Subaru filler cap, as aftermarket caps may not maintain proper cooling system pressure.

Performance Edge Over Competitors

The Killer B Upper Turbo Coolant Reservoir V2 outperforms alternatives by addressing the specific needs of turbocharged Subaru engines. Relocating the OEM tank or removing the ECFT (expansion coolant fill tank) can lead to air entrapment and overheating, while other aftermarket reservoirs often lack the precision fitment and clearance for rotated turbo setups. The Killer B V2’s robust construction, OEM integration, and focus on cooling efficiency make it the superior choice for both street and track applications.