Item Type: Waste Gate Spring Material: Carbon Steel Purpose: Turbine Waste Gas Valve 14PSI Spring: Initial Outer Diameter: Approx. 48.7mm/1.9in Initial Length: Approx. 105mm/4.1in 8PSI Spring: Initial Outer Diameter: Approx. 37.8mm/1.5in Initial Length: Approx. 62.3mm/2.5in1In the field of high?performance driving, springs are still the best way to regulate boost. Whether your goal is a moderate 3PSl, 14PSl or a custom boost level, the spring can achieve. 2Each wastegate actuator spring is designed to work individually or in groups, so you can mix and match different springs to get the best PSI. 3By stacking up to three springs in your waste gate, you can achieve the desired boost speed and the horsepower you need. 4It is exquisitely processed from high?quality low?carbon steel, has abrasion resistance, is not easy to damage, and has a long service life. 5Has extremely high heat resistance, can cope with difficult environments, it is a good replacement on the market. 2 x Waste Gate Spring