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Parts & Accessories For 2003-2008 GM Kodiak/TopKick Trucks with 6.6 Duramax Engines
Find exactly what you need for your Chevy/GMC 6.6L Duramax all under one roof. XDP offers a large selection of stock replacement and aftermarket parts from all the top brands. Whether you are looking to upgrade your diesel truck or simply doing routine maintenance, XDP is the one-stop-shop for your 2003-2008 Chevrolet Kodiak or GMC Topkick C4500/C5500.

In 2003 GM introduced a new generation of the medium-duty Kodiak/Topkick C4500/C5500 trucks. These trucks were built under the GMT560 architecture and were used for multiple heavy-duty utility applications including buses and tow trucks. Similar to Freightliner and International trucks, the Kodiak/Topkick featured a conventional cab design that measured nearly 8 ft wide and 8 ft tall and around 20 ft long. Powering the C4500 & C5500, were a choice of a standard Duramax engines that were used in Silverado/Sierra 2500HD/3500HD pickups or de-rated versions. During the production run, the standard LB7, LLY, LBZ, and LMM Duramax were all offered. The Kodiak and Topkick were also offered with de-rated engines that lowered the output for customers wanting to sacrifice some perfomance for increased reliability and longevity. The de-rated versions included RPO codes LRY, LPD, LRX, & LYE.

The Duramax engine had a durable foundation of a cast-iron block with aluminum heads. Internals of this engine were carried over from the Duramax used in GM Silverado/Sierra pickups. The common-rail fuel system was capable of providing these trucks with better fuel efficiency. The Bosch CP3 pump and solenoid-style injectors were at the heart of this fuel system. Fitted to this engine was a Garrett variable-geometry turbocharger that offered better performance and lower emissions. Originally, the GM Kodiak/Topkick powered by a 6.6L Duramax was paired with a 5-speed automatic transmission, but it was replaced with a 6-speed Allison automatic transmission after 2006.

The GM Kodiak/Topkick was capable of carrying 5,000 lbs. of weight in the bed and towing 14,300 lbs. which was impressive for the time. To handle that weight these trucks were supported by heavy-duty Dana 70 axles and many other robust suspension components. Production of the GM Kodiak/Topkick ended in 2009 as GM turned their focus to improving the Silverado/Sierra pickups. Parts to keep these medium-duty trucks on the road are still readily available. Perform routine maintenance on your 6.6L Duramax with the Oil Filters, Fuel Filters, and Transmission Filters at XDP. XDP offers a wide range of stock replacement and performance parts from hundreds of the top manufacturers to keep your 2003-2009 Chevrolet Kodiak or GMC Topkick performing at its best.