Trans-Dapt Swirl-Torque Plastic Phenolic Carburetor Spacer - 1" Holley/AFB Mechanical Pressure Gauge FAST Fuel Rails are machined

FAST Fuel Rails are machined from 6005A-T5 Aluminum and feature a large 11/16" inside diameter for consistent pressure at each fuel injector

Aside from providing O2 data to your Grid

1978-1991 Mercury Grand Marquis

Three styles are available: number 4201 bolts into the side

Super Barrel

Trans-Dapt Swirl-Torque Plastic Phenolic Carburetor Spacer - 1" Holley/AFB Mechanical Pressure Gauge FAST Fuel Rails are machinedTrans Dapt Performance 1" Holley 4bbl Square Bore Plastic Phenolic Swirl Torque Spacer Trans Dapt Swirl Torque Plastic Phenolic Carb Spacer 2531 1" Holley AFB 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 Each member company of the Hedman Performance Group is a