Product Description
Restore compression and sealing integrity on your 6.5L with the MAHLE 4021T cylinder head gasket. This OE-style composite, steel-core gasket is the +0.010" thicker “T” variant, ideal for engines that have had light resurfacing while maintaining reliable combustion sealing under tow, work-truck, and daily-driver heat cycles.
Fitment
- 1994–2002 Chevrolet & GMC trucks/vans with 6.5L Turbo Diesel (V8)
- Common platforms include C/K 2500–3500 and Express/Savana (verify by engine/RPO)
Cross-Reference / Alternatives (Mahle on CPP Diesel only)
- MAHLE 4021 (Standard thickness)
- MAHLE HS4021A HEAD SET (’92–’00 6.5L)
- MAHLE 95-3461 ENGINE GASKET SET (’94–’00 6.5L)
- MAHLE JV971 TIMING COVER GASKET SET (’82–’02 6.2L/6.5L)
- MAHLE CS3678A LOWER ENGINE GASKET SET (’94–’02 6.5L)
FAQ
Will 4021T fit my 6.5L?
Yes—4021T is cataloged for 1994–2002 GM 6.5L diesel applications. Always verify by engine/RPO and model year.
What does the “T” mean on 4021T?
“T” denotes a +0.010" thicker gasket vs. standard 4021 to help compensate for minor resurfacing while keeping proper sealing.
Do I need two gaskets?
Yes—the 6.5L is a V8. Order quantity 2 for both cylinder banks.
Is this MLS?
No—it's an OE-style composite facing bonded to a steel core for dependable durability.
Specifications for Mahle 4021T
| Attribute | Value |
|---|---|
| Brand | MAHLE |
| Part Number | 4021T |
| Thickness Variant | +0.010" (“T” thicker version) |
| Engine Compatibility | 1994–2002 GM 6.5L Turbo Diesel (V8) |
| UPC | 027067193339 |
| GTIN | 00027067193339 |
| Shipping | Calculated at checkout; optional shipping insurance available |
| Prop 65 | This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Learn more |
