MAHLE 4021 CYLINDER HEAD GASKET FOR 94–02 GM 6.5L DIESEL

Product Description

Restore OE sealing integrity on your 6.5L with the MAHLE 4021 CYLINDER HEAD GASKET for 1994–2002 GM 6.5L Diesel. This composite, steel-core gasket is engineered to factory form/fit/function for reliable combustion sealing under tow, work-truck, and daily-driver heat cycles.

Mahle 4021 head gasket, GM 6.5L diesel head gasket, 1994 1995 1996 1997 1998 1999 2000 2001 2002 6.5 gasket, composite steel core head gasket, CPP Diesel Mahle 6.5L parts, L65 L57 RPO head gasket 4021, GM 6.5 cylinder head gasket

Fitment

• 1994–2002 Chevrolet/GMC 2500 & 3500 – 6.5L Diesel (RPO L65/L57)
• Other GM platforms equipped with the 6.5L Diesel in this range – verify by VIN/engine RPO before purchase

Cross-Reference / Alternatives (Mahle on CPP Diesel only)

• MAHLE 4021T (0.010" thicker service gasket)
• MAHLE HS4021 (Head Set, Std Output)
• MAHLE HS4021A (Head Set, H.O.)

FAQ

Will this fit my 6.5L?

Yes—4021 is cataloged for 1994–2002 GM 6.5L Diesel (verify by VIN/RPO L65/L57 and model year).

Is this MLS?

No—MAHLE 4021 uses an OE-style composite facing bonded to a steel core for dependable sealing.

Do I need to buy two?

The 6.5L is a V8. Order quantity two if servicing both banks.

Heads were resurfaced—what gasket thickness should I use?

Consider the thicker MAHLE 4021T variant (+0.010") or measure piston-to-head clearance and compression targets.

Specifications for Mahle 4021