Product Summary

  • Fits 2001-2016 Chevrolet, GMC and Hummer applications
  • Engine applications: 6.6L 403ci V8 and 6.6L 400ci V8
  • Righthand; FIRE SEAL Premium Head MLS Gasket; .0413" thickness; 4.145" fire ring ID; Use new head bolts
  • Enhancing load distribution and efficiency
  • Featuring durable sealing for superior heat resistance
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Key Specs

MFG. Part #PHC403R-OS
BrandEnginetech
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Need To Know

Quick and Easy Returns

Return Policy

Enginetech PHC403R-OS Details

GM LS 6.6L Head Gasket, Right Bank, MLS for 6.6L 403ci V8 applications — Chevrolet, GMC, Hummer, 2001-2016. Check the fitment listing for the full vehicle coverage before ordering.

Features:

  • Enhancing load distribution and efficiency
  • Featuring durable sealing for superior heat resistance
  • Meet or exceed OE performance
  • Premium Materials and Protection.
  • Simple part numbering system
  • Superior packaging helps you stay organized

Interchange Part #'s

  • FEL-PRO HC403R-OS
  • MAHLE 54598

CARB Warning

For race/ off road use or for use on pre-1966 vehicles.

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

Enginetech PHC403R-OS Specifications

KEY SPECS
MFG. Part #PHC403R-OS
BrandEnginetech

Questions & Answers

Fitment

  • 6.6 GM Duramax V8

  • GM Duramax V8 6.6 LLY

  • GM Duramax V8 6.6 LML

  • 6.6 GM Duramax V8

  • 6.6 GM Duramax V8

  • 6.6 GM Duramax V8

  • 6.6 GM Duramax V8

  • 6.6 GM Duramax V8

  • 6.6 GM Duramax V8

  • 6.6 GM Duramax V8

  • 6.6 GM Duramax V8

  • GM Duramax V8 6.6 LMM

  • GM Duramax V8 6.6 LML

  • 6.6 GM Duramax V8

  • 6.6 GM Duramax V8

  • GM Duramax V8 6.6 LLY

  • GM Duramax V8 6.6 LBZ

  • 6.6 GM Duramax V8

  • 6.6 GM Duramax V8

  • 6.6 GM Duramax V8

  • 6.6 GM Duramax V8

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