# Wehrli 01-04.5 Chevrolet 6.6L LB7 Duramax S400 Turbo Install Kit (No Turbo) - Bengal Blue

This big single turbocharger install kit from WCFab for 2001-2004 Chevy Silverado 2500 / 3500 HD trucks contains what you need to swap from your stock IHI style turbo to a larger frame Borg Warner S400 style setup on a 6.6L LB7 Duramax diesel engine. Upgrades your existing air cleaner setup to a larger 5" fabricated aluminum intake with heavy duty sheet metal air box and high performance dry filter with pre-filter cover. Intercooler hot and cold side charge pipe plumbing are also updated to high flow 3" diameter mandrel bent 14 gauge aluminum tubes. Includes our upgraded high flow 3" fabricated billet y-bridge kit which replaces the restrictive stock upper intake manifold to finish off the air flow path into the engine and allow for maximum horsepower and efficiency gains. Supplied Oil Lines are high-quality stainless steel braided Parker Lines with the oil feed line routing from the main oil galley on the side of the engine block. A variety of popular turbo size options (sold separately) mount to a T4 fabricated steel pedestal with spacer which is compatible with our 2" high flow stainless steel up pipes.  Included high temp ceramic coated turbo downpipe connects to your existing exhaust front pipe V-Band clamp. This simplifies installation and requires NO cutting or modification to your exhaust system. If you are not purchasing a genuine Borg Warner turbo from us, you must specify the brand and details of what you are using so that our sales team can assist you with placing your order and ensure proper fitment. You may be required to ship a separately supplied turbo to us in advance for mock-up to build your kit. Your order lead time starts when we have the turbo needed to build your kit our possession. Includes Driver Side Transmission Dipstick Tube, making installing the down pipe easier.

-   Includes Silicone Boots, Stainless Steel T-Bolt Clamps, V-Band Clamps, Heat wrap, & Driver Side Trans Dipstick Relocation Tube
-   NEW! Now includes 5" Intake with Fabricated Air Box & Lid Constructed of 10G Aluminum Sheet
-   3" 2-Piece Hot Side Intercooler Pipe with V-Band Connection at Turbo Compressor Outlet
-   3" Down Pipe with High Temp Ceramic Coating (Mates to exhaust system flange)
-   Premium Dry Media Air Filter with Outerwear's Pre-Filter Cover
-   3" Fabricated High Flow Y-Bridge & Cold Side Intercooler Pipe
-   Stainless Steel Oil Feed and Drain Lines with Fittings
-   T4 Pedestal & Spacer with Hardware
-   14G Mandrel Bent Aluminum Piping
-   Custom Powder Coat Finish
-   Made in USA

This Part Fits:

Year

Make

Model

Submodel

2001-2004

Chevrolet

Silverado 2500 HD

Base

2001-2004

Chevrolet

Silverado 2500 HD

LS

2001-2004

Chevrolet

Silverado 2500 HD

LT

2004

Chevrolet

Silverado 2500 HD

WT

2001-2004

Chevrolet

Silverado 3500

Base

2001-2004

Chevrolet

Silverado 3500

LS

2001-2004

Chevrolet

Silverado 3500

LT

2004

Chevrolet

Silverado 3500

WT

2002-2004

GMC

Sierra 2500 HD

Base

2001-2002

GMC

Sierra 2500 HD

SL

2001-2004

GMC

Sierra 2500 HD

SLE

2001-2004

GMC

Sierra 2500 HD

SLT

2003-2004

GMC

Sierra 2500 HD

WT

2002-2004

GMC

Sierra 3500

Base

2001-2002

GMC

Sierra 3500

SL

2001-2004

GMC

Sierra 3500

SLE

2001-2004

GMC

Sierra 3500

SLT

2004

GMC

Sierra 3500

WT

## Details

- **Price:** 4598.15 CAD
- **Vendor:** Wehrli
- **Type:** Turbo Install Kits

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 4598.15 CAD | In stock |

## Images

- Photo - Primary
- Photo - Primary
- Photo - Mounted
- Photo - Close Up
- User 1
- Logo Image

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/wehrli-01-04-5-chevrolet-6-6l-lb7-duramax-s400-turbo-install-kit-no-turbo-bengal-blue)
> Updated: 2026-07-07