# Wehrli GM Duramax LB7 S400 Single Turbo 3in Down Pipe

LB7 Duramax 3" Down pipe for S400 turbo with 4.6" Diameter flat exhaust outlet flange (Half marmon). This down pipe mates to the exhaust system v-band flange with OEM clamp for easy install. Must be used with a T4 pedestal between 5.5-6.5" tall.

-   For LLY/LBZ/LMM use WCF100811
-   Heat Wrap & Clamps
-   High Temp Coating
-   3" Down Pipe
-   V-band Clamp
-   Made in USA

## Details

- **Price:** 371.43 CAD
- **Vendor:** Wehrli
- **Type:** Downpipes

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 371.43 CAD | In stock |

## Images

- Photo - Primary
- Logo Image

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/wehrli-gm-duramax-lb7-s400-single-turbo-3in-down-pipe)
> Updated: 2026-09-11