Spectre's intake couplers and sleeves for GM mass air flow sensors are designed to adapt the majority of boot-in style GM mass air flow sensors to a 4 inch intake system. This 3-5/8 inch to 4 inch sleeve is engineered for optimum fit and function.
Your order of 100$ or more gets free standard delivery.
Standard delivered 4-5 Business Days
Express delivered 2-4 Business Days
Orders are processed and delivered Monday-Friday (excluding public holidays)