Universal Type RZ Style Blow Off Valve Purple Top and Purple Lip Drain Bolts Significantly increases your engine's airflow

Significantly increases your engine's airflow volume

2001-2006 Chevrolet Silverado 2500 HD (Crew Cab 4-Door)

Product Common Use:

Helps stiffen the rear-end suspension of your vehicle to provide a better steering response

This is a drop in spring kit for all 15 degree LS heads including LS1 LS2 LS3 LS4 LS6 L76 L92 L99 LQ4 LQ9 L33 LSA

Universal Type RZ Style Blow Off Valve Purple Top and Purple Lip Drain Bolts Significantly increases your engine's airflow100% Brand New Items, Never Used Or Installed Universal 40mm Type RZ Style Billet Aluminum Blow Off Valve CNC Machined From Cast And Billet Aluminum Frame With Anodized Finish Opposing Springs Deisng, Allows For Improved Control, Response And Idle Easily Adjustable To Eliminate Compressor Surge And Preventing Premature Boost Leakage, While Increasing Boost Response Between Shifts Holds Up to 30 PSI Boost Pressure; 100 420hp Range Compatible With