XDP HD Rocker Arm Shafts XD385
This product is vehicle-specific. Select your year, make, model, engine and transmission to confirm compatibility before adding it to your cart.
Select your truck to continue
Ships directly from the supplier. The final shipping cost will be shown before payment.
- Ships from XDP
The XDP HD Rocker Arm Shafts XD385 are specially designed to minimize the common oiling issues in the 2001-2023 GM 6.6L Duramax engines. From the factory, the oil supply to the rocker arm is shut off as the valve is opened. This lack of lubrication can cause excessive wear on your valvetrain and premature failures, especially in high performance applications.The XDP Shafts feature revised oil grooves that align with the oil hole in the bushing so you maintain a consistent oil supply. These shafts are manufactured from hardened 4130 chromoly for extreme durability. Each shaft comes ready to install and has threaded pipe plugs at each end so the shafts can be cleaned, inspected, and hot tanked during an engine rebuild.
Features:
CNC Machined.250" Wall Thickness4130 Chromoly Steel Construction 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 Fitment YEAR MAKE MODEL FOR ENGINE SERIES 2001 Chevrolet Silverado 2500 HD 6.6 2002 Chevrolet Silverado 2500 HD 6.6 2003 Chevrolet Silverado 2500 HD 6.6 2004 Chevrolet Silverado 2500 HD 6.6 2005 Chevrolet Silverado 2500 HD 6.6 2006 Chevrolet Silverado 2500 HD 6.6 2007 Chevrolet Silverado 2500 HD 6.6 2008 Chevrolet Silverado 2500 HD 6.6 2009 Chevrolet Silverado 2500 HD 6.6 2010 Chevrolet Silverado 2500 HD 6.6 2011 Chevrolet Silverado 2500 HD 6.6 2012 Chevrolet Silverado 2500 HD 6.6 2013 Chevrolet Silverado 2500 HD 6.6 2014 Chevrolet Silverado 2500 HD 6.6 2015 Chevrolet Silverado 2500 HD 6.6 2016 Chevrolet Silverado 2500 HD 6.6 2017 Chevrolet Silverado 2500 HD 6.6 2018 Chevrolet Silverado 2500 HD 6.6 2019 Chevrolet Silverado 2500 HD 6.6 2020 Chevrolet Silverado 2500 HD 6.6 2021 Chevrolet Silverado 2500 HD 6.6 2022 Chevrolet Silverado 2500 HD 6.6 2023 Chevrolet Silverado 2500 HD 6.6 2007 Chevrolet Silverado 2500 HD Classic 6.6 2001 Chevrolet Silverado 3500 6.6 2002 Chevrolet Silverado 3500 6.6 2003 Chevrolet Silverado 3500 6.6 2004 Chevrolet Silverado 3500 6.6 2005 Chevrolet Silverado 3500 6.6 2006 Chevrolet Silverado 3500 6.6 2007 Chevrolet Silverado 3500 Classic 6.6 2007 Chevrolet Silverado 3500 HD 6.6 2008 Chevrolet Silverado 3500 HD 6.6 2009 Chevrolet Silverado 3500 HD 6.6 2010 Chevrolet Silverado 3500 HD 6.6 2011 Chevrolet Silverado 3500 HD 6.6 2012 Chevrolet Silverado 3500 HD 6.6 2013 Chevrolet Silverado 3500 HD 6.6 2014 Chevrolet Silverado 3500 HD 6.6 2015 Chevrolet Silverado 3500 HD 6.6 2016 Chevrolet Silverado 3500 HD 6.6 2017 Chevrolet Silverado 3500 HD 6.6 2018 Chevrolet Silverado 3500 HD 6.6 2019 Chevrolet Silverado 3500 HD 6.6 2020 Chevrolet Silverado 3500 HD 6.6 2021 Chevrolet Silverado 3500 HD 6.6 2022 Chevrolet Silverado 3500 HD 6.6 2023 Chevrolet Silverado 3500 HD 6.6 2001 GMC Sierra 2500 HD 6.6 2002 GMC Sierra 2500 HD 6.6 2003 GMC Sierra 2500 HD 6.6 2004 GMC Sierra 2500 HD 6.6 2005 GMC Sierra 2500 HD 6.6 2006 GMC Sierra 2500 HD 6.6 2007 GMC Sierra 2500 HD 6.6 2008 GMC Sierra 2500 HD 6.6 2009 GMC Sierra 2500 HD 6.6 2010 GMC Sierra 2500 HD 6.6 2011 GMC Sierra 2500 HD 6.6 2012 GMC Sierra 2500 HD 6.6 2013 GMC Sierra 2500 HD 6.6 2014 GMC Sierra 2500 HD 6.6 2015 GMC Sierra 2500 HD 6.6 2016 GMC Sierra 2500 HD 6.6 2017 GMC Sierra 2500 HD 6.6 2018 GMC Sierra 2500 HD 6.6 2019 GMC Sierra 2500 HD 6.6 2020 GMC Sierra 2500 HD 6.6 2021 GMC Sierra 2500 HD 6.6 2022 GMC Sierra 2500 HD 6.6 2023 GMC Sierra 2500 HD 6.6 2007 GMC Sierra 2500 HD Classic 6.6 2001 GMC Sierra 3500 6.6 2002 GMC Sierra 3500 6.6 2003 GMC Sierra 3500 6.6 2004 GMC Sierra 3500 6.6 2005 GMC Sierra 3500 6.6 2006 GMC Sierra 3500 6.6 2007 GMC Sierra 3500 Classic 6.6 2007 GMC Sierra 3500 HD 6.6 2008 GMC Sierra 3500 HD 6.6 2009 GMC Sierra 3500 HD 6.6 2010 GMC Sierra 3500 HD 6.6 2011 GMC Sierra 3500 HD 6.6 2012 GMC Sierra 3500 HD 6.6 2013 GMC Sierra 3500 HD 6.6 2014 GMC Sierra 3500 HD 6.6 2015 GMC Sierra 3500 HD 6.6 2016 GMC Sierra 3500 HD 6.6 2017 GMC Sierra 3500 HD 6.6 2018 GMC Sierra 3500 HD 6.6 2019 GMC Sierra 3500 HD 6.6 2020 GMC Sierra 3500 HD 6.6 2021 GMC Sierra 3500 HD 6.6 2022 GMC Sierra 3500 HD 6.6 2023 GMC Sierra 3500 HD 6.6
The XDP HD Rocker Arm Shafts XD385 are specially designed to minimize the common oiling issues in the 2001-2023 GM 6.6L Duramax engines. From the factory, the oil supply to the rocker arm is shut off as the valve is opened. This lack of lubrication can cause excessive wear on your valvetrain and premature failures, especially in high performance applications.The XDP Shafts feature revised oil grooves that align with the oil hole in the bushing so you maintain a consistent oil supply. These shafts are manufactured from hardened 4130 chromoly for extreme durability. Each shaft comes ready to install and has threaded pipe plugs at each end so the shafts can be cleaned, inspected, and hot tanked during an engine rebuild.
Features:
CNC Machined.250" Wall Thickness4130 Chromoly Steel Construction 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 Fitment YEAR MAKE MODEL FOR ENGINE SERIES 2001 Chevrolet Silverado 2500 HD 6.6 2002 Chevrolet Silverado 2500 HD 6.6 2003 Chevrolet Silverado 2500 HD 6.6 2004 Chevrolet Silverado 2500 HD 6.6 2005 Chevrolet Silverado 2500 HD 6.6 2006 Chevrolet Silverado 2500 HD 6.6 2007 Chevrolet Silverado 2500 HD 6.6 2008 Chevrolet Silverado 2500 HD 6.6 2009 Chevrolet Silverado 2500 HD 6.6 2010 Chevrolet Silverado 2500 HD 6.6 2011 Chevrolet Silverado 2500 HD 6.6 2012 Chevrolet Silverado 2500 HD 6.6 2013 Chevrolet Silverado 2500 HD 6.6 2014 Chevrolet Silverado 2500 HD 6.6 2015 Chevrolet Silverado 2500 HD 6.6 2016 Chevrolet Silverado 2500 HD 6.6 2017 Chevrolet Silverado 2500 HD 6.6 2018 Chevrolet Silverado 2500 HD 6.6 2019 Chevrolet Silverado 2500 HD 6.6 2020 Chevrolet Silverado 2500 HD 6.6 2021 Chevrolet Silverado 2500 HD 6.6 2022 Chevrolet Silverado 2500 HD 6.6 2023 Chevrolet Silverado 2500 HD 6.6 2007 Chevrolet Silverado 2500 HD Classic 6.6 2001 Chevrolet Silverado 3500 6.6 2002 Chevrolet Silverado 3500 6.6 2003 Chevrolet Silverado 3500 6.6 2004 Chevrolet Silverado 3500 6.6 2005 Chevrolet Silverado 3500 6.6 2006 Chevrolet Silverado 3500 6.6 2007 Chevrolet Silverado 3500 Classic 6.6 2007 Chevrolet Silverado 3500 HD 6.6 2008 Chevrolet Silverado 3500 HD 6.6 2009 Chevrolet Silverado 3500 HD 6.6 2010 Chevrolet Silverado 3500 HD 6.6 2011 Chevrolet Silverado 3500 HD 6.6 2012 Chevrolet Silverado 3500 HD 6.6 2013 Chevrolet Silverado 3500 HD 6.6 2014 Chevrolet Silverado 3500 HD 6.6 2015 Chevrolet Silverado 3500 HD 6.6 2016 Chevrolet Silverado 3500 HD 6.6 2017 Chevrolet Silverado 3500 HD 6.6 2018 Chevrolet Silverado 3500 HD 6.6 2019 Chevrolet Silverado 3500 HD 6.6 2020 Chevrolet Silverado 3500 HD 6.6 2021 Chevrolet Silverado 3500 HD 6.6 2022 Chevrolet Silverado 3500 HD 6.6 2023 Chevrolet Silverado 3500 HD 6.6 2001 GMC Sierra 2500 HD 6.6 2002 GMC Sierra 2500 HD 6.6 2003 GMC Sierra 2500 HD 6.6 2004 GMC Sierra 2500 HD 6.6 2005 GMC Sierra 2500 HD 6.6 2006 GMC Sierra 2500 HD 6.6 2007 GMC Sierra 2500 HD 6.6 2008 GMC Sierra 2500 HD 6.6 2009 GMC Sierra 2500 HD 6.6 2010 GMC Sierra 2500 HD 6.6 2011 GMC Sierra 2500 HD 6.6 2012 GMC Sierra 2500 HD 6.6 2013 GMC Sierra 2500 HD 6.6 2014 GMC Sierra 2500 HD 6.6 2015 GMC Sierra 2500 HD 6.6 2016 GMC Sierra 2500 HD 6.6 2017 GMC Sierra 2500 HD 6.6 2018 GMC Sierra 2500 HD 6.6 2019 GMC Sierra 2500 HD 6.6 2020 GMC Sierra 2500 HD 6.6 2021 GMC Sierra 2500 HD 6.6 2022 GMC Sierra 2500 HD 6.6 2023 GMC Sierra 2500 HD 6.6 2007 GMC Sierra 2500 HD Classic 6.6 2001 GMC Sierra 3500 6.6 2002 GMC Sierra 3500 6.6 2003 GMC Sierra 3500 6.6 2004 GMC Sierra 3500 6.6 2005 GMC Sierra 3500 6.6 2006 GMC Sierra 3500 6.6 2007 GMC Sierra 3500 Classic 6.6 2007 GMC Sierra 3500 HD 6.6 2008 GMC Sierra 3500 HD 6.6 2009 GMC Sierra 3500 HD 6.6 2010 GMC Sierra 3500 HD 6.6 2011 GMC Sierra 3500 HD 6.6 2012 GMC Sierra 3500 HD 6.6 2013 GMC Sierra 3500 HD 6.6 2014 GMC Sierra 3500 HD 6.6 2015 GMC Sierra 3500 HD 6.6 2016 GMC Sierra 3500 HD 6.6 2017 GMC Sierra 3500 HD 6.6 2018 GMC Sierra 3500 HD 6.6 2019 GMC Sierra 3500 HD 6.6 2020 GMC Sierra 3500 HD 6.6 2021 GMC Sierra 3500 HD 6.6 2022 GMC Sierra 3500 HD 6.6 2023 GMC Sierra 3500 HD 6.6
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.