Applications
Chevrolet - Diesel Duramax
GMC Diesel
GMC Duramax
Installation Instructions
REV NEW DEC 2019
Automotive Racing Products Tel: (805) 339-2200
1863 Eastman Avenue
Fax: (805) 650-0742
Ventura, Ca 93003
www.arp-bolts.com
INSTALLATION METHOD FOR HEAD STUD KITS
Part Number: 230-4301 Application: GM DURAMAX 6.6L L5P ARP2000
Tools Needed:
5mm Allen wrench
10mm, 16mm socket
1.
Inspect all hardware prior to installation. Look for obvious defects or shipping damages. Please call 800-
826-3045 with any questions or issues.
2.
To ensure proper thread engagement and accurate torque readings, clean all threads in the block.
Chase if necessary with ARP Thread Chaser, part number 912-2007 (M12 X 1.5) and 912-0001 (M8 x
1.25).
3.
Clean the spot faces on the cylinder head where the washer seats, use of solvent or brake/carb
cleaner is recommended.
4.
Install the head gasket and cylinder head.
5.
Screw the studs into the block, do not apply torque. The hex broach in the end of the stud is designed to
assist with installing/removing the studs from the block, not for applying torque.
6.
Then, using a clean, dry rag remove all oil from both sides of each washer. The cylinder head and
washer mating surfaces must be free of oil/grease/lubricant. Failure to keep these surfaces dry
may result in inconsistent preloads.
7.
Place the washers over the studs and on to the dry, clean spot faces of the cylinder head.
8.
Lubricate the stud threads and bottom of the nuts with ARP Ultra-Torque Fastener Assembly Lubricant.
Then install the nuts onto the studs and tighten hand tight.
TORQUE PROCEDURE
9.
Following the manufacturers recommended torque sequence, shown below, torque per steps 1-4
1- Tighten nuts 1 through 18 to
25 ft-lbs (33.9 Nm)
2- Tighten nuts 1 through 18 to
50 ft-lbs (67.8 Nm)
3- Tighten nuts 1 through 18 to
125 ft-lbs (169.5 Nm)
4- Tighten bolts 19 through 24 to
25 ft-lbs (33.9 Nm)
TORQUE SEQUENCE
⚠ This is an automatically generated translation and unit conversion. Always refer to the original ARP instruction sheet for exact specifications. Errors may occur. 
