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Wehrli 01-04 Duramax LB7 S400 Single Turbo Install Kit - Bengal Red

$3,295.00 $3,196.15 Save $98.85

SKU: W005 WCF100489-BR

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Special Order
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INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

This kit replaces the stock IHI turbo with a larger Borg Warner S400 style setup for 2001-2004 Chevy Silverado 2500/3500 HD and GMC Sierra 2500/3500 HD trucks with 6.6L LB7 Duramax diesel engines. It includes a 5" fabricated aluminum intake with a heavy-duty sheet metal air box and dry filter, 3" mandrel-bent 14 gauge aluminum intercooler charge pipes, a 3" fabricated billet y-bridge, stainless steel braided oil lines, and a T4 fabricated steel pedestal with spacer for S400 turbos (sold separately). The high-temp ceramic coated downpipe connects to the existing exhaust without modification. A driver-side transmission dipstick tube is included for easier downpipe installation.
Show original supplier description

Part #: WCF100489-BR

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.

Wehrli Custom Fab S400 Single Turbo Install Kit, for 2001-2004 Duramax LB7, Bengal Red

Vehicle Symptoms
  • Lack of power under load or towing
  • Excessive black smoke under acceleration
  • Poor fuel economy compared to stock
  • Engine feels sluggish at higher RPM
  • Turbo lag is worse than expected
Diagnostic Codes
  • P0234 – Engine Overboost Condition
  • P0299 – Turbocharger/Supercharger Underboost
Relevant Conversations
  • LB7 Duramax lack of power under load fix
  • P0234 Duramax overboost code after tune
  • Wehrli S400 kit vs stock IHI turbo upgrade
  • Best single turbo kit for 2001 Silverado Duramax
  • Duramax black smoke and low power after EGR delete
  • S400 turbo install LB7 fuel economy change
  • LB7 turbo upgrade kit install time and difficulty
  • Borg Warner S400 size vs stock for Duramax
  • Duramax heavy towing turbo upgrade suggestions
  • LB7 P0299 code and turbo replacement options

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

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Specifications

BrandWehrli
Part NumberW005 WCF100489-BR

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