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Vehicle Info NeededENGINETECHPART NUMBER: 416-HC403R-OS
HC403R-OS MLS Head Gasket for 2001-2016 Chevrolet, GMC, Hummer 6.6L
$17099
Ships on 09/14/2026
Lowest Price GuaranteeGM
Head Gasket2001-2016 Chevrolet, GMC, Hummer 6.6L Multi-Layer Steel (MLS) Construction Sold Individually
The Enginetech HC403R-OS is a replacement MLS head gasket for HEAD GSKT (1) RH 6.6L DURAMAX O/S BORE MLS .0413" THICK engines, providing an OE-quality combustion chamber seal.
Enginetech HC403R-OS Head Gasket Features:
- Fitment: HEAD GSKT (1) RH 6.6L DURAMAX O/S BORE MLS .0413" THICK
- Multi-Layer Steel (MLS) head gasket construction
- Diesel engine application
- Engineered to OE specifications for direct replacement
- Note: Right. MLS Grade C .0413 thickness. Oversize bore. Use new head bolts. MLS.0413 thickness. 4.173 O/S fire ring ID. Increased ID for bored blocks.
Part TypeHead Gasket
BrandENGINETECH
Package Height0.5
Package Width9.0
Package Length16.5
Weight1.0 PG
Part CategoryReplacement Parts
QuantitySold individually
FitmentHEAD GSKT (1) RH 6.6L DURAMAX O/S BORE MLS .0413" THICK
MaterialMulti-layer steel (MLS)
Part FitmentDirect Fit
Vendor Part NumberHC403R-OS
Package Qty1
Package TypeEA
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