Wehrli

Wehrli 01-04 Chevrolet 6.6L Duramax LB7 2in Stainless Passenger Side Up Pipe w/Gaskets (Twin Turbo) - WCF100648

(No reviews yet) Write a Review
SKU:
WCFWCF100648
UPC:
WCF100648
MPN:
WCF100648
Availability:
Regularly stocked product
  • Photo - Primary
  • Photo - Primary
  • Photo - Mounted
  • Logo Image
MSRP: $345.00
$334.65
— You save $10.35
Current Stock: 1

Sold Out

Frequently bought together:

Description

Will the WCF Up Pipe Kit fit my 2003 Duramax?
WCF Up Pipe Kit fits your 2003 Duramax, specifically the 2001-2004 Chevrolet Silverado 2500 HD and GMC Sierra 2500 HD models.

How does the WCF Up Pipe Kit improve performance?
Bolt-on installation of these heavy-duty stainless steel connecting pipes increases turbo spool-up and decreases exhaust gas temperatures.

The Wehrli WCF Up Pipe Kit is engineered for the 2001-2004 Silverado and Sierra HD trucks, delivering improved turbo spool-up for enhanced engine performance. Featuring heavy-duty 11 gauge 2 inch stainless steel construction and HD stainless bellows, this connecting pipe kit is built for durability. Experience a significant boost in throttle response and sustained power output with this performance-focused upgrade.

Key Features

  • heavy-duty 11 gauge 2 inch Stainless up pipe
  • HD Stainless Bellows
  • Increase Turbo spool-up
  • decrease EGTs
  • built with more sweeping, less aggressive bends for use in COMPOUND / TWIN TURBO STYLE APPLICATIONS ONLY
  • Compatible with only factory exhaust manifolds or WCFab Duramax Billet Exhaust Manifolds (WCF100363)
  • Full flow design eliminates clearance dent and tight bends required for engine valley mount single turbo down pipes
  • Heavy Duty 2 inch Passenger Side Up Pipe
  • Fully TIG Welded 11 GA Stainless Steel Construction
  • Up Pipe Gaskets (2)
  • Made in USA

Why Choose the WCF Up Pipe Kit

Delivers faster turbo spool-up for immediate throttle response and exhilarating acceleration.

Achieves lower Exhaust Gas Temperatures, protecting your engine and enabling sustained performance.

Provides a smoother, unrestricted exhaust flow, eliminating power-robbing restrictions.

Transforms your engine bay for aggressive compound turbo setups, unlocking extreme power potential.

Who Is This For?

Engine Performance — 9/10
Increases turbo spool-up and decreases EGTs.

Street Performance — 8/10
Enhances turbo spool-up for improved street driving.

Drag Racing — 8/10
Improved turbo spool-up benefits acceleration.

Heavy Towing — 7/10
Decreased EGTs are beneficial under load.

Easy DIY Install — 7/10
Bolt-on install type with included gaskets.

Racing Competition — 8/10
Performance gains from turbo spool and EGT reduction.

Vehicle Compatibility

YearMakeModelSubmodel
2001–2004ChevroletSilverado 2500 HDBase
2001–2004ChevroletSilverado 2500 HDLS
2001–2004ChevroletSilverado 2500 HDLT
2004ChevroletSilverado 2500 HDWT
2001–2004ChevroletSilverado 3500Base
2001–2004ChevroletSilverado 3500LS
2001–2004ChevroletSilverado 3500LT
2004ChevroletSilverado 3500WT
2001–2002GMCSierra 2500 HDSL
2001–2004GMCSierra 2500 HDSLE
2001–2004GMCSierra 2500 HDSLT
2002–2004GMCSierra 2500 HDBase
2003–2004GMCSierra 2500 HDWT
2001–2002GMCSierra 3500SL
2001–2004GMCSierra 3500SLE
2001–2004GMCSierra 3500SLT
2002–2004GMCSierra 3500Base
2004GMCSierra 3500WT

Additional Resources

Official Wehrli Product Page

Important Notices

⚠️ CARB Notice: This product is NOT legal for street use in California under CARB (California Air Resources Board) regulations. For off-road or race use only.

⚠️ Proposition 65 Warning: This product can expose you to chemicals including lead and/or other substances known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.

Browse More: Shop All Connecting Pipes — Exhaust, Mufflers & Tips

You Might Also Need

AKR Link Pipe Set - Titanium

Akrapovic | $5870.80

KSH Cat Conn Pipes

Kooks Headers | $3466.14

View AllClose

Warranty Information

This Part Fits:

YearMakeModelSubmodel
2001-2004ChevroletSilverado 2500 HDBase
2001-2004ChevroletSilverado 2500 HDLS
2001-2004ChevroletSilverado 2500 HDLT
2004ChevroletSilverado 2500 HDWT
2001-2004ChevroletSilverado 3500Base
2001-2004ChevroletSilverado 3500LS
2001-2004ChevroletSilverado 3500LT
2004ChevroletSilverado 3500WT
2002-2004GMCSierra 2500 HDBase
2001-2002GMCSierra 2500 HDSL
2001-2004GMCSierra 2500 HDSLE
2001-2004GMCSierra 2500 HDSLT
2003-2004GMCSierra 2500 HDWT
2002-2004GMCSierra 3500Base
2001-2002GMCSierra 3500SL
2001-2004GMCSierra 3500SLE
2001-2004GMCSierra 3500SLT
2004GMCSierra 3500WT
View AllClose

Additional Information

CARB:
This product is not CARB Legal and not for sale in California
Clearance Item:
N
MPN:
WCF100648
Proposition 65:
Y
Case Lot Quantity:
1
Category:
Exhaust, Mufflers & Tips>Connecting Pipes
Install Type:
Bolt-On
Product Level:
Premium Performance
Engine Performance:
9/10
Street Performance:
8/10
Drag Racing:
8/10
Heavy Towing:
7/10
Easy DIY Install:
7/10
Racing Competition:
8/10
View AllClose

Related Products

Related Products