HSP Diesel Factory Replacement Coolant Tank for 2001-2007 Chevrolet And GMC LB7 / LLY / LBZ Duramax
This product is vehicle-specific. Select your year, make, model, engine and transmission to confirm compatibility before adding it to your cart.
Colours and prices as published by HSP Diesel · verified 9/8/2026
Select your truck to continue
Ships directly from the supplier. The final shipping cost will be shown before payment.
- Ships from HSP Diesel
HSP Factory Replacement Coolant Tank for 2001-2007 Chevrolet / GMC Duramax LB7 / LLY / LBZ The 027-HSP, or HSP Factory Replacement Coolant Tank, is designed for 2001-2007 Chevrolet and GMC Duramax trucks. Its a perfect upgrade that delivers both function and style while retaining OEM fitment. Why You Need an HSP Factory Replacement Coolant Tank As your truck ages, OEM plastic tanks become prone to cracking, leaking, and general failure. HSPs aluminum replacement resolves those issues and offers a cleaner, more durable solution that also looks great in any engine bay. What Makes the HSP Tank Different? The factory tank is plastic, discolors over time, and cant handle long-term heat or pressure. HSP starts with precision CNC-cut aluminum, forms and welds it by hand, and finishes with your choice of powder coating. Designed with all factory provisions and fittings, it even reuses the OEM low coolant sensor to avoid triggering any check engine lights. This tank is a true drop-in replacement built to last. Whats Included 1x Factory Replacement Coolant Tank (HSP-IN-709) 1x Radiator Cap (RFB-806-RFAB) 1x 1/2" Heater Hose (RFB-400-RFAB) 1x 1/2" Worm Gear Clamp (RFB-405-RFAB) 1x 1" Worm Gear Clamp (RFB-406-RFAB) 1x Low Coolant Sensor (RFB-459-RFAB) Fitment LB7: 0104 (VIN Code 1) LLY: 04.505 (VIN Code 2) LBZ: 0607 (VIN Code 2 or D)
Note:
Engine code is found in the 8th character of the VIN; model year is the 10th character. Overview Aluminum construction for strength and longevity Factory drop-in replacement Factory cap and sensor compatibility Powder coat and custom color options available Eliminates cracking and discoloration of OEM plastic tanks Our Warranty HSP NO BS LIMITED LIFETIME WARRANTY At HSP, we believe in our products and stand behind everything we build. For years we've taken care of nearly any issue our customers have faced—even without a formal warranty policy. Now, weve put it in writing: our No BS Warranty. Its simple, straightforward, and built on the same values weve always had. For more details ab
HSP Factory Replacement Coolant Tank for 2001-2007 Chevrolet / GMC Duramax LB7 / LLY / LBZ The 027-HSP, or HSP Factory Replacement Coolant Tank, is designed for 2001-2007 Chevrolet and GMC Duramax trucks. Its a perfect upgrade that delivers both function and style while retaining OEM fitment. Why You Need an HSP Factory Replacement Coolant Tank As your truck ages, OEM plastic tanks become prone to cracking, leaking, and general failure. HSPs aluminum replacement resolves those issues and offers a cleaner, more durable solution that also looks great in any engine bay. What Makes the HSP Tank Different? The factory tank is plastic, discolors over time, and cant handle long-term heat or pressure. HSP starts with precision CNC-cut aluminum, forms and welds it by hand, and finishes with your choice of powder coating. Designed with all factory provisions and fittings, it even reuses the OEM low coolant sensor to avoid triggering any check engine lights. This tank is a true drop-in replacement built to last. Whats Included 1x Factory Replacement Coolant Tank (HSP-IN-709) 1x Radiator Cap (RFB-806-RFAB) 1x 1/2" Heater Hose (RFB-400-RFAB) 1x 1/2" Worm Gear Clamp (RFB-405-RFAB) 1x 1" Worm Gear Clamp (RFB-406-RFAB) 1x Low Coolant Sensor (RFB-459-RFAB) Fitment LB7: 0104 (VIN Code 1) LLY: 04.505 (VIN Code 2) LBZ: 0607 (VIN Code 2 or D)
Note:
Engine code is found in the 8th character of the VIN; model year is the 10th character. Overview Aluminum construction for strength and longevity Factory drop-in replacement Factory cap and sensor compatibility Powder coat and custom color options available Eliminates cracking and discoloration of OEM plastic tanks Our Warranty HSP NO BS LIMITED LIFETIME WARRANTY At HSP, we believe in our products and stand behind everything we build. For years we've taken care of nearly any issue our customers have faced—even without a formal warranty policy. Now, weve put it in writing: our No BS Warranty. Its simple, straightforward, and built on the same values weve always had. For more details ab
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.