HKS (71008-AF013) Super SQV4 Sequential Blow-Off Valve Kit
$268.00
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JAN: 4957266265093. For SQV4 WRX STI 5-DOOR & SEDAN (08-11) The HKS SUPER SQV (Sequential Blow-off Valve) employs HKS' unique two-stage sequential valve structure using a primary valve and a secondary valve. Delicately achieve pressure control in the working area. In addition, the "relief-less operation method", which is different from the structure of a general blow-off valve, suppresses relief during turbocharger supercharging and throttle ON.
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