HSP Diesel
HSP Diesel 2in Replacement Driver Side Up-Pipe for 2001-2004 Chevrolet And GMC LB7 Duramax
MPN: 031-2-HSP
HSP 2001-2004 Chevrolet / GMC 2" Replacement Driver Side Up-Pipe Part Number: 031-2-HSP The HSP 2" Replacement Driver Side Up-Pipe is a direct upgrade for the 2001-2004 LB7 Duramax-equipped Chevrolet and GMC trucks. Designed to improve flow and durability, it addresses the common failure points o…
$265
Ships From Supplier · Ships in 3–10 business days
Supplier availability is confirmed before your card is charged
Shipping calculated at checkout
Fitment sensitive
Select your truck to continue
This product is vehicle-specific. Select your year, make, model, engine and transmission to confirm compatibility before adding it to your cart.
Select Powder ColorRequired
Colours and prices as published by HSP Diesel · verified 9/8/2026
1
Select your truck to continue
Shipping calculated at checkout
Ships directly from the supplier. The final shipping cost will be shown before payment.
- Ships from HSP Diesel
Ships directly from our trusted supplier network.
Warranty
Warranty Information Pending
Warranty information has not yet been provided for this product. Contact FullSpecDiesel for help locating the applicable manufacturer or supplier warranty.
View complete warrantyHSP 2001-2004 Chevrolet / GMC 2" Replacement Driver Side Up-Pipe Part Number: 031-2-HSP The HSP 2" Replacement Driver Side Up-Pipe is a direct upgrade for the 2001-2004 LB7 Duramax-equipped Chevrolet and GMC trucks. Designed to improve flow and durability, it addresses the common failure points of the factory up-pipe while offering measurable performance benefits. Why Replace Your Factory Up-Pipe? The up-pipe plays a vital role by feeding exhaust gases to the turbo, generating boost. Factory up-pipes are known to fail—often at the worst times—due to weak bellows and heat-warped flanges. These failures cause power loss, increased exhaust temps, and driveability issues. Replacing them proactively prevents breakdowns and performance dips. What Makes the HSP 2" Up-Pipe Better? HSPs 2" Up-Pipe outperforms OEM versions with increased flow capacity, leading to better spool-up, reduced EGTs, and more power and torque. Its crafted from heavy-wall 304 stainless steel and features heavy-duty sleeved bellows for exceptional reliability under heat and stress. This is the perfect blend of strength and performance in one critical upgrade. Whats Included: (1) 2" Stock Replacement Driver Side Up-Pipe (1) Up-Pipe Gasket (Turbo Side) (RFB-821-RFAB) (1) Up-Pipe Gasket (Manifold Side) (RFB-822-RFAB) Fitment: LB7: 2001-2004 (VIN Code 1) How to verify the VIN code: The engine code is the 8th character of your VIN, and the 10th character indicates the model year. Overview: Increased reliability and lifespan Improved exhaust flow and performance Lower exhaust gas temperatures (EGTs) Faster turbo spool-up 304 stainless steel construction Includes high-quality gaskets Heavy-duty sleeved bellow for durability Our Warranty HSP "NO BS" Limited Lifetime Warranty At HSP, we believe in our products and stand firmly behind everything we make. For years, weve supported our customers beyond expectations. Now, our "No BS" warranty makes that commitment official—clear, strong, and built around you. Click here to view the HSP Warranty
HSP 2001-2004 Chevrolet / GMC 2" Replacement Driver Side Up-Pipe Part Number: 031-2-HSP The HSP 2" Replacement Driver Side Up-Pipe is a direct upgrade for the 2001-2004 LB7 Duramax-equipped Chevrolet and GMC trucks. Designed to improve flow and durability, it addresses the common failure points of the factory up-pipe while offering measurable performance benefits. Why Replace Your Factory Up-Pipe? The up-pipe plays a vital role by feeding exhaust gases to the turbo, generating boost. Factory up-pipes are known to fail—often at the worst times—due to weak bellows and heat-warped flanges. These failures cause power loss, increased exhaust temps, and driveability issues. Replacing them proactively prevents breakdowns and performance dips. What Makes the HSP 2" Up-Pipe Better? HSPs 2" Up-Pipe outperforms OEM versions with increased flow capacity, leading to better spool-up, reduced EGTs, and more power and torque. Its crafted from heavy-wall 304 stainless steel and features heavy-duty sleeved bellows for exceptional reliability under heat and stress. This is the perfect blend of strength and performance in one critical upgrade. Whats Included: (1) 2" Stock Replacement Driver Side Up-Pipe (1) Up-Pipe Gasket (Turbo Side) (RFB-821-RFAB) (1) Up-Pipe Gasket (Manifold Side) (RFB-822-RFAB) Fitment: LB7: 2001-2004 (VIN Code 1) How to verify the VIN code: The engine code is the 8th character of your VIN, and the 10th character indicates the model year. Overview: Increased reliability and lifespan Improved exhaust flow and performance Lower exhaust gas temperatures (EGTs) Faster turbo spool-up 304 stainless steel construction Includes high-quality gaskets Heavy-duty sleeved bellow for durability Our Warranty HSP "NO BS" Limited Lifetime Warranty At HSP, we believe in our products and stand firmly behind everything we make. For years, weve supported our customers beyond expectations. Now, our "No BS" warranty makes that commitment official—clear, strong, and built around you. Click here to view the HSP Warranty
Product conditions
- Return eligibility
- Returnable within 30 days of confirmed delivery, in original condition, with an approved RMA
- Return window
- 30 days from confirmed delivery
- Restocking fee
- No restocking fee
- Return shipping
- Customer pays return shipping on voluntary returns
- Made to order
- No
- Backorder status
- Not backordered
- Cancellation
- Cancellation is only possible before the supplier order is submitted
- Warranty provider
- Warranty Information Pending
- Warranty duration
- Pending verification
- Compatibility
- Listed for specific vehicle configurations
- Legal use
- Street legal
- Processing estimate
- 3–10 business days supplier processing
- Shipping
- Shipping calculated at checkout
- Signature
- No signature requirement
- Supplier
- HSP Diesel
Product compatibility is based on the vehicle and product information provided. Review your selected truck, product options, measurements, modifications, and installation requirements before ordering.