XDP HD High Boost Valve Spring Set XD390
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Control the valvetrain in your modified vehicle with the XDP HD High Boost Valve Spring Set XD390. The XD390 Valve Spring Kit is designed to help eliminate valve float due to elevated cylinder pressures and higher boost levels. Common upgrades like aftermarket tuning and fueling and turbo upgrades can cause valve float that results in severe engine damage. Intake valves can also be blown open from added boost levels and exhaust drive pressure which allows reversion. Reversion is when exhaust gasses enter cylinder on the intake stroke, another condition that can hurt your power potential. The XD390 Valve Spring Set is ideal for the enthusiast that is running an aftermarket camshaft, upgraded or compound turbochargers, and fueling upgrades. These springs are ready to install using your factory retainers and locks. The XD390 Valve Springs have a reduced OD and will fit all 1998.5-2002 cylinder heads regardless of the casting inconsistencies.
Features:
Performance Valve Spring KitEssential For Elevated Boost Levels (+50 lbs)
Specifications:
Installed Height:1.340"Installed Pressure: 108lbs192lbs @ .920"Coil Bind: .800"WarrantyAll product warranties if any, implied have been done so at the discretion of the manufacturer. If you need warranty assistance on any product you've purchased, please contact the manufacturer directly.Products manufactured by XDP carry a 2-Year warranty against defects in materials and craftsmanship. The Warranty is Limited to two (2) years from the date of sale and limited solely to the parts contained within the product's kit. All products that are in question of Warranty must be returned shipping prepaid to XDP and must be accompanied by a dated proof of purchase receipt. Warranty is limited to the original purchaser.Under no circumstances shall the Xtreme Diesel Performance, LLC. be liable for any labor charged or travel time incurred in diagnosis for defects, removal, or reinstallation of this product, or any other contingent expenses.Vehicle FitmentYEARMAKEMODELFOR ENGINE SERIES1998DodgeRam 25005.91999DodgeRam 25005.92000DodgeRam 25005.92001DodgeRam 25005.92002DodgeRam 25005.92003DodgeRam 25005.92004DodgeRam 25005.92005DodgeRam 25005.92006DodgeRam 25005.92007DodgeRam 25005.92007DodgeRam 25006.72008DodgeRam 25006.72009DodgeRam 25006.72010DodgeRam 25006.71998DodgeRam 35005.91999DodgeRam 35005.92000DodgeRam 35005.92001DodgeRam 35005.92002DodgeRam 35005.92003DodgeRam 35005.92004DodgeRam 35005.92005DodgeRam 35005.92006DodgeRam 35005.92007DodgeRam 35005.92007DodgeRam 35006.72008DodgeRam 35006.72009DodgeRam 35006.72010DodgeRam 35006.72008DodgeRam 45006.72009DodgeRam 45006.72010DodgeRam 45006.72008DodgeRam 55006.72009DodgeRam 55006.72010DodgeRam 55006.72011Ram25006.72012Ram25006.72013Ram25006.72014Ram25006.72015Ram25006.72016Ram25006.72017Ram25006.72018Ram25006.72019Ram25006.72020Ram25006.72021Ram25006.72022Ram25006.72023Ram25006.72024Ram25006.72011Ram35006.72012Ram35006.72013Ram35006.72014Ram35006.72015Ram35006.72016Ram35006.72017Ram35006.72018Ram35006.72019Ram35006.72020Ram35006.72021Ram35006.72022Ram35006.72023Ram35006.72024Ram35006.72011Ram45006.72012Ram45006.72013Ram45006.72014Ram45006.72015Ram45006.72016Ram45006.72017Ram45006.72018Ram45006.72019Ram45006.72020Ram45006.72021Ram45006.72022Ram45006.72023Ram45006.72024Ram45006.72011Ram55006.72012Ram55006.72013Ram55006.72014Ram55006.72015Ram55006.72016Ram55006.72017Ram55006.72018Ram55006.72019Ram55006.72020Ram55006.72021Ram55006.72022Ram55006.72023Ram55006.72024Ram55006.7
Control the valvetrain in your modified vehicle with the XDP HD High Boost Valve Spring Set XD390. The XD390 Valve Spring Kit is designed to help eliminate valve float due to elevated cylinder pressures and higher boost levels. Common upgrades like aftermarket tuning and fueling and turbo upgrades can cause valve float that results in severe engine damage. Intake valves can also be blown open from added boost levels and exhaust drive pressure which allows reversion. Reversion is when exhaust gasses enter cylinder on the intake stroke, another condition that can hurt your power potential. The XD390 Valve Spring Set is ideal for the enthusiast that is running an aftermarket camshaft, upgraded or compound turbochargers, and fueling upgrades. These springs are ready to install using your factory retainers and locks. The XD390 Valve Springs have a reduced OD and will fit all 1998.5-2002 cylinder heads regardless of the casting inconsistencies.
Features:
Performance Valve Spring KitEssential For Elevated Boost Levels (+50 lbs)
Specifications:
Installed Height:1.340"Installed Pressure: 108lbs192lbs @ .920"Coil Bind: .800"WarrantyAll product warranties if any, implied have been done so at the discretion of the manufacturer. If you need warranty assistance on any product you've purchased, please contact the manufacturer directly.Products manufactured by XDP carry a 2-Year warranty against defects in materials and craftsmanship. The Warranty is Limited to two (2) years from the date of sale and limited solely to the parts contained within the product's kit. All products that are in question of Warranty must be returned shipping prepaid to XDP and must be accompanied by a dated proof of purchase receipt. Warranty is limited to the original purchaser.Under no circumstances shall the Xtreme Diesel Performance, LLC. be liable for any labor charged or travel time incurred in diagnosis for defects, removal, or reinstallation of this product, or any other contingent expenses.Vehicle FitmentYEARMAKEMODELFOR ENGINE SERIES1998DodgeRam 25005.91999DodgeRam 25005.92000DodgeRam 25005.92001DodgeRam 25005.92002DodgeRam 25005.92003DodgeRam 25005.92004DodgeRam 25005.92005DodgeRam 25005.92006DodgeRam 25005.92007DodgeRam 25005.92007DodgeRam 25006.72008DodgeRam 25006.72009DodgeRam 25006.72010DodgeRam 25006.71998DodgeRam 35005.91999DodgeRam 35005.92000DodgeRam 35005.92001DodgeRam 35005.92002DodgeRam 35005.92003DodgeRam 35005.92004DodgeRam 35005.92005DodgeRam 35005.92006DodgeRam 35005.92007DodgeRam 35005.92007DodgeRam 35006.72008DodgeRam 35006.72009DodgeRam 35006.72010DodgeRam 35006.72008DodgeRam 45006.72009DodgeRam 45006.72010DodgeRam 45006.72008DodgeRam 55006.72009DodgeRam 55006.72010DodgeRam 55006.72011Ram25006.72012Ram25006.72013Ram25006.72014Ram25006.72015Ram25006.72016Ram25006.72017Ram25006.72018Ram25006.72019Ram25006.72020Ram25006.72021Ram25006.72022Ram25006.72023Ram25006.72024Ram25006.72011Ram35006.72012Ram35006.72013Ram35006.72014Ram35006.72015Ram35006.72016Ram35006.72017Ram35006.72018Ram35006.72019Ram35006.72020Ram35006.72021Ram35006.72022Ram35006.72023Ram35006.72024Ram35006.72011Ram45006.72012Ram45006.72013Ram45006.72014Ram45006.72015Ram45006.72016Ram45006.72017Ram45006.72018Ram45006.72019Ram45006.72020Ram45006.72021Ram45006.72022Ram45006.72023Ram45006.72024Ram45006.72011Ram55006.72012Ram55006.72013Ram55006.72014Ram55006.72015Ram55006.72016Ram55006.72017Ram55006.72018Ram55006.72019Ram55006.72020Ram55006.72021Ram55006.72022Ram55006.72023Ram55006.72024Ram55006.7
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.
Professional installation is recommended.
- 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.