Product Description
MAHLE HS3678 is an OE-quality cylinder head head set for early GM IDI diesels. It includes the upper-engine gaskets and seals required to remove and replace the cylinder heads on 6.2L/6.5L platforms, built to OE specifications for reliable sealing and long service life.
- Engine family: GM 6.2L / 6.5L IDI Diesel (V8)
- Materials: Composite head gaskets; paper/composite intake & exhaust gaskets
- Package: Shrink-wrapped tray for content security
- Head bolts/studs not included
- GTIN/UPC: 725975324462
Fitment
- 1982–1993 Chevrolet/GMC trucks & SUVs with 6.2L or 6.5L diesel
- 1992–1993 AM General Hummer (H1) with 6.2L/6.5L diesel
Cross Reference Numbers
- GM: 12516165, 14067685
- MAHLE/Clevite: HS3678
- GTIN/UPC: 725975324462
What’s Included
Complete cylinder head head set (upper-engine gaskets & seals) for a full top-end service; head bolts/studs not included.
FAQ
Will this fit both 6.2L and 6.5L engines?
Yes—this set covers 1982–1993 GM 6.2L and 6.5L IDI diesel applications (see Fitment above).
Does the kit include head bolts or studs?
No. Reuse only if in spec or upgrade to new bolts/studs during reassembly.
What gasket materials are used?
Composite head gaskets with paper/composite intake and exhaust gaskets, built to OE specifications for sealing reliability.
Is there a warranty?
Yes—12-month limited warranty (typical for MAHLE head sets).
