Opening valve pressure changed from 1.1 bar (standard) to 1.3 bar. This product prevents overflow caused by the thermal expansion of coolant water even under severe conditions such as sports driving and circuit racing. Opening valve pressure: 1.3 bar.
* When replacing this product, pay careful attention to leakage of water from the piping, and be sure to inspect the coolant water at the start of work.
Fits to all petrol H4 engine with timing belt.
STI PERFORMANCE PARTS with which STI applied technologies developed and proven in motor sport will enrich your driving.
About STI Performance Parts Subaru STI Performance Parts are developed under the over-arching concept of 'total tuning'. This is defined as engineering by design to help improve the overall handling and performance.
Subaru STI Performance Parts have been created in close co-operation with the development team of Subaru Tecnica International (STI). We tap into data from the fierce motorsport battle grounds and feed it directly back to the STI development group. With this data, we can develop the highest level of product for the most demanding of conditions.
By installing Genuine Subaru STI Performance Parts on your Subaru, you can take your driving to the next level.
Why Use Genuine Subaru STI Performance Parts? Genuine Subaru STI Performance Parts are distinct from other manufacturer's 'after market' performance parts because they are designed by factory engineers who understand the original design philosophy of your vehicle. They know how each part fits into the total concept and its influence on the operation of the total vehicle.
The installation of genuine Subaru STI Performance Parts, will help you achieve the optimum balance between road 'tuning' and the excitement of race-bred performance, every day.
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