Holley 6-Rib Serpentine Pulley Kit - Black - GM GenV LT-Series SB180020 The Ecometer by AutoMeter is

The Ecometer by AutoMeter is a simple

This kit includes 16 shims per thickness measurement

The Lever-type model provides a reliable visual reference for seven distinct brake force reduction positions

Bottle Style

modification to the shift linkage may be required

Holley 6-Rib Serpentine Pulley Kit - Black - GM GenV LT-Series SB180020 The Ecometer by AutoMeter isHolley's Mid Mount complete accessory system has all accessories pulled in tighter than other accessory drives. At the heart of the system is a "bracketless" design, where the accessories bolt directly to the water pump for a clean, integrated form. The design offers superb engine visibility to show off your horsepower, not your accessories. Among the many swap friendly features are bottom heater outlets for clearance in tight applications. The Holley