Trans-Dapt Performance Products 2531 Swirl-Torque Plastic Phenolic Carb Spacer Features: Computer Designed Road Tested For Proven Results Prevent To Out Perform The Competition Improves Low To Mid-Range RPM Torque Improves Pulling Power Great For Both Truck And Car Applications Improves Drive ability And Throttle Response Height: 1.00 Width: 7.63 Length: 8.63 Weight: 1.20 lbs