# Wehrli GMC/Chevrolet LLY/LBZ/LMM Duramax 6.6L w S400 Single Turbo 3in Down Pipe - Black

LLY/LBZ/LMM/LML 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 LB7 use WCF100878
-   Heat Wrap & Clamps
-   High Temp Coating
-   3" Down Pipe
-   V-band Clamp
-   Made in USA

## Details

- **Price:** 373.38 CAD
- **Vendor:** Wehrli
- **Type:** Downpipes

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 373.38 CAD | In stock |

## Images

- Photo - Primary
- User 1
- Logo Image

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/wehrli-gmc-chevrolet-lly-lbz-lmm-duramax-6-6l-w-s400-single-turbo-3in-down-pipe-black)
> Updated: 2026-08-17