Transmission Oil Cooler 01-05 GM 6.6L Duramax X-TRA Cool XD309 XDP
Can I pick up my order or have it installed at your shop?
Can I pick up my order or have it installed at your shop?
Absolutely. We offer local pickup on most products and full professional installation at our shop in Washington, MO. Whether you just want to grab your parts or have our techs handle the install, we’ve got you covered. Give us a quick call at 636-429-7020 or message us to schedule a visit — we’ll make sure the parts are ready when you arrive.
How do I know if this part fits my vehicle?
How do I know if this part fits my vehicle?
Unsure if it’ll fit? No problem — that’s what we’re here for. Send us your vehicle’s year, make, and model, and we’ll verify fitment before you order. We can also point you toward compatible upgrades or supporting parts if needed.
What if I need to return a product or it’s defective?
What if I need to return a product or it’s defective?
Most unused items can be returned within 30 days in their original packaging. Some products are covered by a manufacturer’s warranty as well. If something arrives damaged or doesn’t meet your expectations, just let us know — we’ll help you get it replaced, refunded, or repaired. (Tracking updates are also emailed automatically once your order ships.)
What's the lead time on custom or fabricated parts?
What's the lead time on custom or fabricated parts?
Many of our parts are built to order — especially fabricated or performance components. These can take additional time to produce before shipping. Lead times vary by manufacturer and demand, but we’ll always keep you updated along the way. If you’re working on a tight schedule, reach out before ordering at 636-429-7020 and we’ll confirm current availability or estimated ship dates.
Description
Description
Transmission Oil Cooler 01-05 GM 6.6L Duramax X-TRA Cool XD309 XDP
This Part Fits:
- 2001 Chevrolet Silverado 2500 HD
- 2002 Chevrolet Silverado 2500 HD
- 2003 Chevrolet Silverado 2500 HD
- 2004 Chevrolet Silverado 2500 HD
- 2005 Chevrolet Silverado 2500 HD
- 2001 GMC Sierra 2500 HD SL
- 2002 GMC Sierra 2500 HD SL
- 2001 GMC Sierra 2500 HD SLT
- 2002 GMC Sierra 2500 HD SLT
- 2003 GMC Sierra 2500 HD SLT
- 2004 GMC Sierra 2500 HD SLT
- 2005 GMC Sierra 2500 HD SLT
- 2001 GMC Sierra 3500 SLT
- 2002 GMC Sierra 3500 SLT
- 2003 GMC Sierra 3500 SLT
- 2004 GMC Sierra 3500 SLT
- 2005 GMC Sierra 3500 SLT
- 2001 GMC Sierra 2500 HD SLE
- 2002 GMC Sierra 2500 HD SLE
- 2003 GMC Sierra 2500 HD SLE
- 2004 GMC Sierra 2500 HD SLE
- 2005 GMC Sierra 2500 HD SLE
- 2001 GMC Sierra 3500 SLE
- 2002 GMC Sierra 3500 SLE
- 2003 GMC Sierra 3500 SLE
- 2004 GMC Sierra 3500 SLE
- 2005 GMC Sierra 3500 SLE
- 2001 Chevrolet Silverado 3500
- 2002 Chevrolet Silverado 3500
- 2003 Chevrolet Silverado 3500
- 2004 Chevrolet Silverado 3500
- 2005 Chevrolet Silverado 3500
- 2001 GMC Sierra 3500 SL
- 2002 GMC Sierra 3500 SL
- 2001 Chevrolet Silverado 2500 HD LT
- 2002 Chevrolet Silverado 2500 HD LT
- 2003 Chevrolet Silverado 2500 HD LT
- 2004 Chevrolet Silverado 2500 HD LT
- 2005 Chevrolet Silverado 2500 HD LT
- 2001 Chevrolet Silverado 3500 LT
- 2002 Chevrolet Silverado 3500 LT
- 2003 Chevrolet Silverado 3500 LT
- 2004 Chevrolet Silverado 3500 LT
- 2005 Chevrolet Silverado 3500 LT
- 2001 Chevrolet Silverado 3500 LS
- 2002 Chevrolet Silverado 3500 LS
- 2003 Chevrolet Silverado 3500 LS
- 2004 Chevrolet Silverado 3500 LS
- 2005 Chevrolet Silverado 3500 LS
- 2001 Chevrolet Silverado 2500 HD LS
- 2002 Chevrolet Silverado 2500 HD LS
- 2003 Chevrolet Silverado 2500 HD LS
- 2004 Chevrolet Silverado 2500 HD LS
- 2005 Chevrolet Silverado 2500 HD LS
- 2002 GMC Sierra 3500
- 2003 GMC Sierra 3500
- 2004 GMC Sierra 3500
- 2005 GMC Sierra 3500
- 2002 GMC Sierra 2500 HD
- 2003 GMC Sierra 2500 HD
- 2004 GMC Sierra 2500 HD
- 2005 GMC Sierra 2500 HD
- 2003 GMC Sierra 2500 HD WT
- 2004 GMC Sierra 2500 HD WT
- 2005 GMC Sierra 2500 HD WT
- 2004 GMC Sierra 3500 WT
- 2005 GMC Sierra 3500 WT
- 2004 Chevrolet Silverado 2500 HD WT
- 2005 Chevrolet Silverado 2500 HD WT
- 2004 Chevrolet Silverado 3500 WT
Specifications:
- Country of Origin: USA
- Sold As: Each
- UPC: 856217008489
- Availability: Available
- Hardware Included: Yes
- Overall Length: 16.0 Inch
- Thickness: 2.0 Inch
- Universal: No
- Application: 2001-2005 GM 6.6L Duramax
About XDP:
XDP is a leading retailer, distributor, and manufacturer of top-quality OE, OER, and aftermarket diesel parts and accessories. Strategically positioned across the United States, XDP houses one of the largest and most diverse diesel-specific inventories in the industry. For the last 20 years, XDP has proudly served the diesel community and diesel industry across North America and Canada. We're ready to meet the needs of you and your vehicle, whether it be for work, play, towing or hauling. We know what moves you!
The XDP X-TRA Cool Direct-Fit Transmission Oil Cooler XD309 is a direct upgrade for the factory transmission oil cooler in your 2001-2005 GM 6.6L Duramax LB7/LLY. XDP's X-TRA Cool Transmission Oil Coolers are made using techniques borrowed from the HD and semi-truck industry to provide you with the ultimate in strength and durability.
Built for more than just increased strength, the XD309 Features a high-efficiency core that is specially designed to maximize transmission cooling potential over the factory unit. Each kit comes ready to install with the needed fittings, brackets, and hardware to make this a bolt-on installation for your GM Duramax/Allison powertrain.
Features:
- Direct-Fit Replaces Factory Cooler
- Upgraded Design For Increased Durability
- High-Efficiency Core To Maximize Cooling
XD309 Specifications:
- Core Width: 12-1/2 inch
- Core Height: 7-3/4 inch
- Core Thickness: 2 inch
- Overall Length: 16 inch
- Cooler Fittings: 7/8-14 UNF
Application Notes:
This transmission cooler is intended for use with the factory transmission lines. XDP cannot guarantee fitment with aftermarket transmission lines.
Warranty Info:
Products manufactured by XDP carry a 1-Year warranty against defects in materials and craftsmanship. The Warranty is Limited to one (1) year from the date of sale and limited solely to the parts contained within the product's kit.
