COBB Fuel Rails (343150) | Subaru STI 2008-2021

The COBB Fuel Rails are engineered to deliver consistent fuel volume and improved flow stability for high-performance Subaru STI builds. Designed as a direct upgrade to the factory system, these rails help maintain uniform pressure across all cylinders, supporting reliable combustion under increased boost and demanding tuning conditions.

KEY FEATURES

• High-flow design improves fuel delivery consistency
• Precision-machined construction for optimal sealing and reliability
• Supports advanced tuning and higher horsepower applications
• Corrosion-resistant materials ensure long-term durability
• Direct bolt-on installation for Subaru STI configurations

TECHNICAL SPECIFICATIONS

• CNC-machined aluminum rail bodies for strength and heat resistance
• Large internal bore for enhanced fuel volume capacity
• Compatible with upgraded injectors and aftermarket fuel systems
• Designed to maintain stable pressure under elevated boost levels
• Precision AN-style fittings ensure secure, leak-free connections

VEHICLE FITMENT

• Subaru STI 2008-2021

COBB delivers proven, data-driven performance solutions engineered to optimize your Subaru with unmatched precision and reliability.