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.. Forward Facing Thermostat Required: The OEM turbo coolant feed port on the upper radiator pipe from the thermostat housing will interfere with the larger WCFAB Turbo Intake in this Kit. Billet Coolant Port Block Off Plugs DO NOT allow enough room for clearance on LB7 Models. You MUST use a WCFAB Billet forward-facing thermostat housing Kit WCF100405 together with this kit to complete the installation.. All kits for use with SXE / Race Cover style turbochargers are considered build to order and this information needs to be specified in the order notes at the time that it is placed with WCFab.. Turbo Down pipe is designed for Half Marmon style S400 exhaust outlet, which measures 4.6" Diameter flat flange. NOT compatible with HX40 style exhaust outlet flanges.. 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. Wehrli Custom Fab S400 Single Turbo Install Kit, for 2001-2004 Duramax LB7, Brizzle Blue. 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). S400 Single Turbo Install Kit, for 2001-2004 Duramax LB7, Brizzle Blue. Wehrli 01-04 Duramax LB7 S400 Single Turbo Install Kit - Brizzle Blue. 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. S400 Turbo Kit 01-04 Dmax LB7 Brizz Blue. T4 Pedestal & Spacer with Hardware. 14G Mandrel Bent Aluminum Piping. Custom Powder Coat Finish. S400 Kit 01-04 BRZ. Turbocharger Kit. Made in USA

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