DieselTuff 4bt Head Stud Kit

A must for HP applications & higher boost engines.

• Rated at 220,000 psi tensile strength
• More clamping force than head bolts for added protection
• Threads rolled after heat treatment for optimum fatigue strength
• Centerless ground to assure perfect concentricity
• Broached stud ends install & make cylinder head removal easier
• Hardened 12-pt nuts & parallel-ground washers included
• Black oxide finish helps protects from corrosion & wear

Includes :

(18) 12mm Heads Studs

(18) 12 Point Nuts

(18) Hardened Parallel Washer

(4) 8mm Secondary Rocker Hold Down Bolts

(1) ARP Fastener Assembly Lub.

(1) Instructions

Note: This kit requires modification to the rocker arm pedestals to accommodate the shorter four rocker arm head studs included in this kit. These brings the 12pt nut and washer combination down to the same installed height as the factory head bolt for clearance with the underside of valve covers.