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1337052 | Caterpillar C10/C12 Cylinder Head with Valves, New

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Availability: In Stock & Ready to Ship!
Pricing: $2,599.94

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Is your Cylinder Head in it for the long haul?

We all know in order to get a million of miles out of your engine you need to keep your engine cool, well lubricated, and perform regular maintenance. Let one of these slip... and your rig is going to wind up in the shop with you stuck waiting for the repair.

It's no secret that diesel engine parts can cost an arm and a leg. That's where HHP’steps in; we offer premium aftermarket parts at up to 50% off OEM prices. While most believe aftermarket retailers sell cheap parts with zero warranty, packed in a beat-up box from who knows where, HHP is here to kick that stereotype to the curb. HHP provides Cylinder Heads with additional engine cooling properties and a 1-year warranty. How's that for an aftermarket part?

Need a little extra proof? Let's talk Cylinder Heads.

  • Why buy reman when you can buy new? Our Caterpillar C10/C12 Cylinder Head is pre-assembled, and ready for installation.

  • Featuring new valves, guides, springs, seats, seals, and cups, this Cylinder Head includes everything you need to go another million miles.

  • Keep your engine running at peak performance, with a new head design for higher coolant flow compliments of widened passages and a thicker deck.


  • (1) Cylinder Head (Includes valves, spring, retainers, and keepers)


1-year warranty on parts, with the first 6-Months covering both parts and labor. The valves, springs, retainers, and keepers, are backed by a separate 2-year Parts and Labor Warranty.

OEM Applications

  • 1165369
  • 1300911
  • 1323252
  • 1337052
  • 1442950
  • 1442967
  • 1482144
  • 2166951
  • D-C12HEAD

Technical Data

Product Dimensions: 39.5x12.5x4
General Engine Specs:
Year - 1996-2002
Liter - 10.3
CID - 629
Bore - 4.9212"

General Engine Specs:
Year - 1996-2003
Liter - 12
CID - 730
Bore - 5.1181-5.1211"

Cylinder Head Specs for C10/C12
Minimum Thickness - 4.108"
New Thickness - 4.128-4.140"
Stem Diameter - .3714-.3720" (intake and exhaust)
Head Diameter - 1.7715-1.7725" (intake), 1.6535-1.6545" (exhaust)
Angle - 29.25* (intake), 44.25* (exhaust)
Seat Angle - 30* (intake), 45* (exhaust)
Seat Outside Diameter - 1.8120" (intake), 1.7080" (exhaust)
Seat Insert Bore Depth - .587-.595" (intake), .551-.559" (exhaust)
Valve Spring:
Outer Spring Free Length - 2.358"
Outer Spring Installed Height - 2.035"
Outer Spring Open Test Press - 139-149 LBS at 1.485"
Outer Spring Close Test Press - 49-59 LBS at 2.035"
Inner Spring Free Length - 2.417"
Inner Spring Installed Height - 1.937"
Inner Spring Open Test Press - 63-69 LBS at 1.387"
Inner Spring Close TEst Press - 29-34 LBS at 1.937"
Intake Valve Lash - .015" COLD
Exhaust Valve Lash - .025" COLD
Torque - Full Shank: #1-26=99-121 FT/LBS +90°, #27-33=15-25 FT/LBS

General Engine Specs:
Year - 1996-2003
Liter - 12
CID - 730
Bore - 5.1181-5.1211"

Installation Tips

Keep all parts clean from contaminants.
Contaminants may cause rapid wear and shortened component life.


Shipping Information

  • Item Requires Shipping
  • 317.0 lbs.
  • W15.0000” x H10.0000” x L41.0000”

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