INSTALLATION METHOD FOR HEAD STUD KITS
Part Number: 250-4301 Application: Ford 6.7L Powerstroke Diesel
Always verify the part number for your application with the part number on the side of box and the part
number on the instruction sheet. This will help ensure you have the correct installation procedure for
your specific application before installing any components.
Clean and inspect all hardware prior to installation. Look for obvious defects or shipping damages, plus proper
fit, length and dimension.
To ensure proper thread engagement and accurate torque readings, clean ALL threads in the block. Chase if
necessary with ARP Thread Chaser, part number 911-0008 (M12 x 1.75).
If the cylinder head studs protrude into a water jacket, lubricate the block threads of the studs with ARP
Screw studs into the block “HAND TIGHT ONLY”.
NOTE: LOCTITE MAY BE USED IF A PERMANENT MOUNTING OF THE STUDS IS PREFERRED.
Install the cylinder head(s) and check for binding or misalignment.
Lubricate the stud threads, nuts and washers with ARP ULTRA-TORQUE FASTENER ASSEMBLY
LUBRICANT. Then install the washers and the nuts onto the studs and tighten them hand tight.
PRELOAD (TORQUE) RECOMMENDATIONS
Following the manufacturers recommended torque sequence, tighten the 12mm nuts in three equal steps to
the following specification with ARP ULTRA-TORQUE. Then tighten the 8mm nuts to the following specification
in one step with ARP ULTRA-TORQUE.
Studs1-18,12mm 125 ftlbs
Studs 19-22/ 23, 8mm 28 ft lbs