# Wehrli 01-05 Chevrolet 6.6L LB7/LLY Duramax Thermostat Housing & Upper Coolant Pipe Kit - Bengal Red

The Top Outlet Billet Thermostat Housing and Upper Coolant Pipe Kit for 2001-2005 LB7/LLY Duramax replaces the OEM upper radiator hose that normally crosses over the driver side valve cover as well as the coolant return pipe. By changing the coolant routing to an upwards and forward layout from the thermostat, this kit improves access to driver side fuel system components, adds room for larger aftermarket turbochargers, and updates engine bay appearance. Compatible with Single and Dual CP3 Pump setups. Finished in your choice of custom powder coat colors.

-   Required for race cover style or SXE turbochargers being mounted in the valley
-   Replaces the following GM Part numbers:15792832,15198345
-   Includes coolant pipe, silicone boots, and t-bolt clamps
-   CNC Machined Billet Aluminum Thermostat Upper Housing
-   Compatible with factory VGT style turbochargers
-   Custom Single Stage Powder Coating
-   Made in USA

This Part Fits:

Year

Make

Model

Submodel

2001-2005

Chevrolet

Silverado 2500 HD

Base

2001-2005

Chevrolet

Silverado 2500 HD

LS

2001-2005

Chevrolet

Silverado 2500 HD

LT

2004-2005

Chevrolet

Silverado 2500 HD

WT

2001-2005

Chevrolet

Silverado 3500

Base

2001-2005

Chevrolet

Silverado 3500

LS

2001-2005

Chevrolet

Silverado 3500

LT

2004

Chevrolet

Silverado 3500

WT

2002-2005

GMC

Sierra 2500 HD

Base

2001-2002

GMC

Sierra 2500 HD

SL

2001-2005

GMC

Sierra 2500 HD

SLE

2001-2005

GMC

Sierra 2500 HD

SLT

2003-2005

GMC

Sierra 2500 HD

WT

2002-2005

GMC

Sierra 3500

Base

2001-2002

GMC

Sierra 3500

SL

2001-2005

GMC

Sierra 3500

SLE

2001-2005

GMC

Sierra 3500

SLT

2004-2005

GMC

Sierra 3500

WT

## Details

- **Price:** 696.42 CAD
- **Vendor:** Wehrli
- **Type:** Thermostat Housings

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 696.42 CAD | In stock |

## Images

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/wehrli-01-05-chevrolet-6-6l-lb7-lly-duramax-thermostat-housing-upper-coolant-pipe-kit-bengal-red)
> Updated: 2026-07-07