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Parts & Accessories For 2011-2016 GM Trucks with 6.6 Duramax LML Engines

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Video for 2011-2016 Chevy/GMC Trucks with 6.6L LML Duramax Engines


2011-2016 Chevy Silverado & GMC Sierra 2500HD/3500HD with 6.6 LML Duramax Engine 

XDP has a vast array of OEM-style replacement parts, aftermarket upgrades & accessories for your 2011-2016 Chevrolet Silverado or GMC Sierra 2500/3500 With 6.6L Duramax LML diesel engine. XDP has you covered whether you want to fix your truck and get it back on the road, do routine services, or enhance dependability and performance.  

Maintain Your 6.6 LML Diesel  

  • Engine Oil & Filters - Regular oil changes and adherence to the manufacturer's recommended schedule can help your truck's engine last longer. Purchase premium oils from leading manufacturers such as Lucas Oil, Hot Shot's Secret, and Royal Purple.
  • Air Filters - Your engine's dirty air filter should be replaced with factory-style paper cellulose or high-flow aftermarket air filters from AFE, K&N, and MAHLE.
  • Fuel Filters - XDP provides aftermarket or factory replacement filters to assist in safeguarding the fuel system.
  • Coolant - Use high-quality coolants like Evans Waterless Engine Coolant, Hot Shot's Secret, and Mishimoto to keep your cooling system in great shape. 

Common Repair Parts  

  • CP4.2 Injection Pump - The CP4 is known to be failure prone. XDP offers replacement CP4s as well as CP4 to CP3 conversion kits to help increase reliability.
  • Crank Pin Kit - The balancer can turn freely on the crankshaft's snout if the OEM dowel pin shears off. Installing the XDP Crankshaft Dowel Pin Kit XD331 will stop this.
  • Diesel Exhaust Fluid Heater - The factory heater is designed to prevent DEF from freezing but if fails, the DEF freezes. XDP offers replacement DEF heaters.

Popular Upgrades  

  • Cold Air Kit - Improve the airflow into your Duramax when you install an intake system from S&B, AFE, Banks Power, and other top brands.
  • Tuner - To get more horsepower and torque out of your truck, XDP offers Edge, Banks Power, and Superchips modules and programmers.
  • Exhaust - Install an MBRP, Magnaflow, or AFE 4" or 5" exhaust system to help lower your truck's exhaust back pressure.
  • Lift Pump - Although a lift pump wasn't provided in the Duramax trucks' original design, installing one will enhance fuel delivery. Leading manufacturers such as FASS and AirDog offer lift pumps for the LML Duramax.

Popular Accessories 

  • Tonneau Cover - BAK, Access, and Bestop tonneau covers will keep the items in your truck's bed dry and secure.
  • Floor Liners - WeatherTech and Husky Liners products can help keep your truck's interior free from spills and dirt.
  • Running Boards - Nerf bars from manufacturers like N-Fab and AMP Research make it easy to get in and out of your truck.

Lift & Leveling Kits 

  • Lift Kits - Improve ground clearance while installing bigger tires on your truck with lift kits from BDS-Suspension, Cognito, ReadyLift, and more.  
  • Leveling Kits - Level the stance of your truck when you install Cognito, Kryptonite, and Daystar leveling kits.

Appearance Upgrades 

  • Headlights/Tail Lights - Install headlights and taillights from Anzo, Spyder, Morimoto, and other manufacturers to update the look of your truck.
  • Wheels - Find a wide variety of DDC Wheels and Fuel Off-Road wheels to make your truck as unique as you.

Towing/Hauling Products 

  • Hitches - Find the gooseneck, drop hitch, and fifth wheel hitches and accessories you need for your truck.
  • Air Bags & Load Support - Get greater stability and assurance when towing when you install Air Lift, Firestone, Timbren, and Pacbrake load support products.
Find the top brands for your 2011, 2012, 2013, 2014, 2015, or 2016 Chevy Silverado or GMC Sierra 2500HD/3500HD With 6.6L LML Duramax diesel engine. XDP has OEM components and aftermarket stock-style replacements & upgrades for your truck.


Attention: If you have a GM Duramax, please verify your engine type before ordering any product. Many of the products we offer are not interchangeable with all Duramax engine types. To Verify: Check the 8th digit in the VIN number.

VIN Code 1 - LB7 (2001-2004)
VIN Code 2 - LLY (2004.5-2006)
VIN Code D - LBZ (2006-2007)
VIN Code 6 - LMM (2007.5-2010)
VIN Code 8 - LML (2011-2016)