Product Description
MAHLE B32478 turbo inlet gasket restores a tight, leak-free seal at the turbocharger inlet on 2001–2004 GM 6.6L Duramax LB7. Built to OE specs for reliable boost control and clean MAF readings, this direct-fit gasket helps prevent unmetered air leaks that hurt spool and drivability.
Fitment
- 2001–2004 Chevrolet Silverado/GMC Sierra 2500HD & 3500 with 6.6L Duramax LB7
- Location: Turbocharger inlet (inlet horn/tube to turbo face)
- Sold individually
Cross-Reference / OE Notes
- Mahle: B32478 (OE-style replacement)
- Typical material: paper/fiber, OE-equivalent construction
Recommended MAHLE Pairings (Internal Links)
- MAHLE GS33678 Turbo Mounting Gasket Set – 01–10 Duramax
- MAHLE 95-3726VR Engine Gasket Kit – 01–04 Duramax LB7
Why MAHLE
- OE-exact geometry for proper clamp load and sealing
- Durable materials to survive heat and vibration at the turbo inlet
- Trusted fitment across LB7 platforms
Installation Notes
- Clean mating surfaces; replace any distorted hardware
- Verify inlet tube alignment before final torque
- Inspect intake boots for tears/oil saturation while servicing
FAQ
Will B32478 fit my 2003 LB7?
Yes—B32478 is specified for 2001–2004 LB7 turbo inlets.
How many gaskets are required?
One per turbo inlet connection; sold individually.
What’s the UPC/GTIN for this gasket?
UPC (GTIN-12): 027067875235.
Specifications for Mahle B32478
| Attribute | Value |
|---|---|
| Brand | MAHLE |
| Part Number | B32478 |
| UPC / GTIN | 027067875235 |
| Shipping Info | Ships from CPP Diesel; lightweight flat-pack gasket (shipping calculated at checkout). |
| Country of Origin | Not specified |
| Prop 65 | No California Prop 65 warning indicated for this item. |
