Product Description
MAHLE HS4021A is an OE-quality cylinder head head set for GM’s 6.5L diesel V8. It includes the upper-engine gaskets and seals required to remove and replace one or both cylinder heads. Head bolts/studs are not included.
- Engine: GM 6.5L Diesel V8 (turbo/non-turbo as equipped)
- Meets or exceeds OEM specs; OE form/fit/function
- Packaged in a sealed tray for content verification prior to install
- Warranty: 1-Year Limited
Fitment
- 1992–2000 Chevrolet/GMC C/K 2500 & 3500 with 6.5L Diesel
- 1994–2000 Hummer H1 with 6.5L Diesel
- 1996–2000 Chevrolet Express / GMC Savana (6.5L Diesel)
Note: Some retailers list extended coverage into early 2000s high-output 6.5L applications; verify by VIN before ordering.
Cross Reference Numbers
- MAHLE: HS4021A (GTIN/UPC: 757522714433)
- Interchange: Fel-Pro HS4021 (reference only)
What’s Included
Complete head set (upper engine gasket kit) with head gaskets and related intake/exhaust and valve cover gaskets & seals necessary for cylinder head service. Does not include head bolts/studs.
FAQ
Will this fit my 1992–2000 GM 6.5L truck?
Yes—this set is designed for GM 6.5L diesel V8 applications in 1992–2000 C/K 2500/3500 and related platforms. Always verify by VIN and engine RPO.
Does this kit include head bolts or studs?
No. Reuse is not recommended—pair with new OE-equivalent bolts or an ARP stud kit.
Is this an MLS head gasket?
MAHLE supplies OE-equivalent materials for the 6.5L; gasket construction matches the original design for reliable sealing.
Any machine work needed?
Check head/block flatness and surface finish per GM service specs; proper RA/SF is critical for sealing longevity.
