Applications
Caterpillar All
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: 238-4201
Application: Caterpillar C15 HSK
Tools Needed:
1/4 Allen wrench
15/16 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.
3.
Install the spacer plate, head gasket and cylinder head.
4.
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.
NOTE: The long studs install in the No. 11, 12, 13, 14, 16, 18, 20, 22, 24 and 26 positions of the torque
sequence.
5.
Lubricate both sides of the washers with ARP Ultra-Torque Fastener Assembly Lubricant then place them
over the studs onto the cylinder head spot faces.
6.
Lubricate the stud threads then install the nuts onto the studs and thread by hand down until the nut
contacts the washer.
TORQUE PROCEDURE
7.
Following the manufacturers recommended torque sequence, shown below, use a 15/16 socket to torque
the nuts per steps 1-3
1- Tighten nuts 1 through 26 to
150 ft-lbs (203.4 Nm)
2- Tighten nuts 1 through 26 to
300 ft-lbs (406.7 Nm)
3- Tighten nuts 1 through 26 to
440 ft-lbs (596.6 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. 
