Cummins 5.9L 12V '89-'98 ARP2000 Head Studs ARP 247-4203Cummins 5. 9L 12V '89 '98 ARP2000 Head Studs ARP 247 4203 If you are running in excess of 45 PSI on your 12 valve Cummins, your stock head bolts are in serious danger of stretching, causing head gasket failure. ARP diesel head studs are good insurance against head gasket failure. Don't let a blown head gasket ruin your day at the track. It is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for

Engineered to boost power

This kit includes all part necessary to repair you 2011-14 6

Order your 2020+ PowerMax Direct-Fit Upgrade today and get ready to enjoy the ultimate driving thrill

Many builders choose to install valve springs during a head-off build for easier access and inspection

R6 – 100% Over

Ideal for street

Fits: Build Dates: 2/22/2010-3/17/2014

this kit includes everything needed to replace a worn or leaking overflow valve

Turbine Exducer 83

These injectors are balanced to tighter tolerances than original manufacturer specifications

Increased Compressor Flow: Noticeable improvement in compressor flow

Ensure a secure