Mishimoto Radiator Cap for Subaru High-Pressure 1.3 Bar One-Way Design

Mishimoto Radiator Cap for Subaru — High-Pressure 1.3 Bar One-Way Design Upgrade your Subaru cooling system with the Mishimoto High-Pressure 1.3 Bar Radiator Cap. Built to exceed OEM limits, this one-way cap prevents premature coolant loss under demanding driving or track conditions, preserving optimal engine temperatures and performance. High-pressure rating: 1.3 bar (approx. 18.9 psi) for improved boil-over protection One-way, OEM-compatible design: Matches Subaru’s stock cap functionality for correct coolant flow and system balance Direct-fit installation: Quick, tool-free swap for a seamless upgrade Durable construction: Engineered for consistent sealing and long-term reliability under repeated thermal cycles User-friendly detail: Non-directional sticker ensures proper orientation every time Perfect for performance-tuned, daily-driven, or track-focused Subarus, the Mishimoto 1.3 bar cap reduces overflow reservoir loss and helps maintain stable cooling system pressure. Improve cooling efficiency, reduce overheating risk, and protect your engine during spirited driving. Compatibility & benefits: Designed specifically for Subaru radiator necks that use a one-way OEM cap. Lightweight, reliable, and engineered to deliver measurable benefits for enthusiasts seeking a simple, effective cooling upgrade.