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1979374 | Caterpillar C12 Piston Crown

Pricing: $206.24

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Think you know the truth about Piston Crowns? We'd bet you'd be surprised.

It’s no secret, rebuilding your rig is one of the most labor (and wallet) intensive repairs out there. Sure, you want your engine to last another million miles but you also want the best price; so what should you choose- OEM or Aftermarket?

When it comes to engine parts, the aftermarket often gets a bad rep. The idea that aftermarket retailers sell cheap parts with zero warranty, delivered in a beat-up box written in another language couldn’t be further from the truth. HHP is here to set the record straight; we only sell new Piston Crowns. On top of only offering premium quality parts, we also make sure you save up to 50% off OEM prices. So, when it comes to your Piston Crown, what’s left to want?

Need a little extra proof? Let’s talk Pistons.

  • This piston crown is built to OEM specifications stricter than a dad with his daughter's boyfriend, ensuring proper fitment and function.
  • We put the OEM to shame with this piston crown! It is equal or better quality compared to the OE at a much lower price. Giving your more cash in your pocket!
  • This excellent quality piston crown is computer control machined to maintain proper clearances.
  • You are not sacrificing with this crown. It is manufactured and assembled in an ISO 9001:2008 certified facility giving you the quality and consistency your rig demands.
  • We have ASE certified techs on staff to answer all of your technical questions.


  • (1) Piston Crown


2-Year Parts and Labor Warranty
OEM Applications:
  • 1979374

Technical Data

Caterpillar C12 Engine Specifications:
Year: 1996-2003
Liter: 12.0
CID: 730
Cylinders: L 6
Bore/Stroke: 5.1181-5.1211", 5.9055"
Compression Ratio: -
Firing Order: 1-5-3-6-2-4
Comments: Diesel 11.9 Liter, Dir Inj, 1YN1 and up

Tune-Up Specifications:
Oil Pressure At Idle: 10 Psi at 600-800 RPM
Oil Pressure: 40-60 Psi at 1400-1800 RPM
Intake Valve Lash: .015" Cold
Exhaust Valve Lash: .025" Cold

Piston Specifications:
Compression Height: -
Piston Protrusion: -
Skirt Oil Clearance: -
Piston To Rod Assembly Orientation: Bearing Notch to Right Side
Piston Pin Diameter: 2.0931-2.0935"
Piston Pin Type: Float
Piston Pin Bore Diameter: 2.0937-2.0941", .0010-.0020" Clr
Piston Ring Gap: Top .0156-.0254", 2nd .0177-.0323", Oil .011-.023"


Shipping Information

  • Item Requires Shipping
  • 5.0 lbs.
  • W7.5000” x H6.5000” x L7.5000”

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