Product Description
Seal the bottom end right the first time with the MAHLE CS3678A Lower Engine (Conversion) Gasket Set for 1994–2002 GM 6.5L diesel. OE-grade materials and precise profiles deliver dependable sealing for daily drivers, work trucks, and restorations. Packed in a protective tray so you can confirm contents before opening.
Fitment
- 1994–2002 GM 6.5L (395 CID) diesel applications: C/K 2500–3500 pickups, Suburban, Tahoe/Yukon, Express/Savana vans, and Hummer H1.
What’s Included
- Oil pan gasket
- Water pump gasket
- Rear main seal
- Fuel pump gasket
- Timing cover gaskets & seal
- Additional lower-end gaskets & seals as required
Cross-Reference / Alternatives (Mahle on CPP Diesel only)
- MAHLE 95-3461 ENGINE GASKET SET (94–00 6.5L)
- MAHLE 4021 CYLINDER HEAD GASKET (94–02 6.5L)
- MAHLE 4021T CYLINDER HEAD GASKET (THICKER) (94–02 6.5L)
- MAHLE JV971 TIMING COVER GASKET SET (82–02 6.2L/6.5L)
- MAHLE HS4021A HEAD SET (92–00 6.5L)
FAQ
Will CS3678A fit my 6.5L?
Yes—CS3678A is cataloged for 1994–2002 GM 6.5L diesel trucks/SUVs/vans and H1. Verify by VIN/RPO when in doubt.
Is this a complete engine set?
No. CS3678A is a lower/conversion set for the bottom end. For a full reseal, pair with the appropriate MAHLE head set (e.g., HS4021/HS4021A).
Does it include the rear main seal?
Yes—plus timing cover gaskets & seal, oil pan, water pump, fuel pump, and other lower-end gaskets.
Specifications for Mahle CS3678A
| Attribute | Value |
|---|---|
| Brand | MAHLE |
| Part Number | CS3678A |
| Engine Compatibility | 1994–2002 GM 6.5L Diesel (C/K 2500–3500, Suburban/Tahoe/Yukon, Express/Savana, H1) |
| UPC | 725975626283 |
| GTIN | 00725975626283 |
| Shipping | Calculated at Checkout; optional shipping insurance available at checkout |
| 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 |
