Valve Springs

Higher rpm increased boost/drive pressures, and aggressive camshaft profiles can result in valve float and cause serious damage to diesel valvetrains. Valves can also be blown open by higher boost and exhaust drive pressures creating reversion that...

145lb seat pressure at 1.650 installed height  Coil bind at 1.090 Works with factory spring shim We recommend using WCPC6664 Push Rods with them

Fleece Performance Cummins Rocker Arm Bridges for 1998.5+ 24v 5.9L/6.7L Cummins (12 Required)

The Industrial Injection 150LB Performance Valve Springs are recommend for people who are pushing over 45psi boost and/or 3200rpm. These performance valve springs will help prevent valve float, there for allowing your truck to run more efficiently and...

The Industrial Injection 95LB Performance Valve Springs were designed with performance in mind. We recommend these valve springs for engines that are pushing over 45psi boost and/or 3200rpm. These performance valve springs will help prevent valve float,...

Comp Cams drop in valvesprings with shim kit for proper install height and they have i higher seat pressure to help hold the valve open during higher boost applications. Smith Brothers pushrods are not a bad idea with these springs in a more performance...

Valve Spring Kit; #60;These BD Diesel engine exhaust brake valve springs are designed to keep your engine exhaust brake functioning properly. They feature durable steel construction and are available for your diesel-powered truck.

145lb seat pressure at 1.650 installed height  Coil bind at 1.090 Works with factory spring shim We recommend using WCPC6664 Push Rods with them

Irate Diesels competition valve spring setup is for those looking for upgraded springs to be used in the extreme situations or with aftermarket cams. Includes springs, retainers, locks and new valve seals. This springs offer a 160lb of pressure, 420lb...

The Industrial Injection 95LB Performance Valve Springs were designed with performance in mind. We recommend these valve springs for engines that are pushing over 45psi boost and/or 3200rpm. These performance valve springs will help prevent...

Upgrade your Cummins valve springs and retainers with our Fleece Performance spring and retainer kit. Our springs are manufactured from “super clean” Hi-Tensile Chrome Silicon steel with a proprietary multi-step heat treating process that minimizes load...