HSP Diesel 2in Replacement Passenger Side Up-Pipe for 2001-2004 Chevrolet And GMC LB7 Duramax
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Colours and prices as published by HSP Diesel · verified 9/8/2026
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HSP 2" Replacement Passenger Side Up-Pipe for 2001-2004 Chevrolet / GMC Duramax LB7 The 031-1-HSP, or HSP 2" Replacement Passenger Side Up-Pipe, is designed for the 2001-2004 Chevrolet and GMC Duramax LB7. It offers improved performance and addresses common failure points found in factory units. Why You Need an HSP 2" Replacement Up-Pipe The factory up-pipes on Duramax trucks are notorious for failing—typically at the bellows—causing power loss, higher EGTs, and potential downtime. As these trucks age, preemptively replacing this component becomes essential for reliability. Warped flanges and gasket issues only worsen with time, heat, and use. What Makes the HSP 2" Up-Pipe Different? HSPs 2" up-pipe dramatically increases flow, resulting in better turbo spool-up, lower exhaust gas temperatures (EGTs), more torque, and increased power. Its built from heavy wall 304 stainless steel tubing with heavy-duty sleeved bellows—meaning its both performance-ready and ultra-reliable. Whats Included 1x 2" Stock Replacement Passenger Up-Pipe (HSP-IN-280) 1x Turbo Side Up-Pipe Gasket (RFB-821-RFAB) 1x Manifold Side Up-Pipe Gasket (RFB-822-RFAB) Fitment LB7: 2001-2004 (VIN Code 1) VIN Info: The 8th character of your VIN indicates the engine, and the 10th character indicates the model year. Overview Increased reliability and lifespan Improved turbo spool and power output Lower EGTs Heavy-duty sleeved bellows 304 stainless steel construction Gaskets included for both ends Our Warranty HSP NO BS LIMITED LIFETIME WARRANTY At HSP, we believe in our products and stand firmly behind every item that leaves our facility. For years weve gone above and beyond for our customers—and were not changing that. With our official "No BS" warranty, youll know exactly what to expect and how to get support when needed. For more information about our Lifetime No BS Warranty, click HERE.
HSP 2" Replacement Passenger Side Up-Pipe for 2001-2004 Chevrolet / GMC Duramax LB7 The 031-1-HSP, or HSP 2" Replacement Passenger Side Up-Pipe, is designed for the 2001-2004 Chevrolet and GMC Duramax LB7. It offers improved performance and addresses common failure points found in factory units. Why You Need an HSP 2" Replacement Up-Pipe The factory up-pipes on Duramax trucks are notorious for failing—typically at the bellows—causing power loss, higher EGTs, and potential downtime. As these trucks age, preemptively replacing this component becomes essential for reliability. Warped flanges and gasket issues only worsen with time, heat, and use. What Makes the HSP 2" Up-Pipe Different? HSPs 2" up-pipe dramatically increases flow, resulting in better turbo spool-up, lower exhaust gas temperatures (EGTs), more torque, and increased power. Its built from heavy wall 304 stainless steel tubing with heavy-duty sleeved bellows—meaning its both performance-ready and ultra-reliable. Whats Included 1x 2" Stock Replacement Passenger Up-Pipe (HSP-IN-280) 1x Turbo Side Up-Pipe Gasket (RFB-821-RFAB) 1x Manifold Side Up-Pipe Gasket (RFB-822-RFAB) Fitment LB7: 2001-2004 (VIN Code 1) VIN Info: The 8th character of your VIN indicates the engine, and the 10th character indicates the model year. Overview Increased reliability and lifespan Improved turbo spool and power output Lower EGTs Heavy-duty sleeved bellows 304 stainless steel construction Gaskets included for both ends Our Warranty HSP NO BS LIMITED LIFETIME WARRANTY At HSP, we believe in our products and stand firmly behind every item that leaves our facility. For years weve gone above and beyond for our customers—and were not changing that. With our official "No BS" warranty, youll know exactly what to expect and how to get support when needed. For more information about our Lifetime No BS Warranty, click HERE.
HSP offers a limited lifetime warranty to the original purchaser on eligible HSP products. Underhood powder coating has separate two-year limited coverage. Non-HSP brands follow their own manufacturer warranties. Discontinued products and customer/installer damage are excluded. Claim authorization is required; customer pays inbound shipping for ordinary claims.
Return and warranty information is based on what HSP Diesel offers. Product-specific eligibility and the supplier’s published conditions apply; FullSpecDiesel does not add or extend coverage.
HSP Diesel warranty policyView complete warrantyProduct conditions
Return and warranty information is based on what HSP Diesel offers. Product-specific eligibility and the supplier’s published conditions apply; FullSpecDiesel does not add or extend coverage.
- Return eligibility
- HSP states returns must be postmarked within 30 days of purchase, new and unused with original tags and packaging, with an approved RMA. A 15% restocking fee and customer-paid return shipping apply. Special orders, non-HSP dropship products, apparel, used items and custom colors are excluded. Based on what HSP Diesel offers.
- Return window
- Not stated for this product; see supplier terms
- Restocking fee
- See supplier terms; no product-specific fee stated
- Return shipping
- Based on the supplier’s return policy; see terms
- Made to order
- No
- Backorder status
- Not backordered
- Cancellation
- Subject to supplier terms; contact FullSpecDiesel before requesting cancellation
- Warranty provider
- HSP Diesel
- Warranty duration
- Product-specific duration not stated; see supplier terms
- 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.