low price guarantee at Thoroughbred Diesel


Ford Powerstroke 94-97 7.3L 99-03 7.3L 03-07 6.0L 2008 6.4L Dodge Cummins 89-93 5.9L 94-98 5.9L 98.5-02 5.9L 03-04 5.9L 04.5-07 5.9L 07.5-08 6.7L GM Duramax 01-04 LB7 04.5-05 LLY 06-07 LLY/LBZ 07.5-08 LMM





	view all Performance
	view all Exterior
	view all Interior
	view all Stock Parts

	View My Cart
	Checkout Now

VP44 injection pumps

Edge Products

Exterior Truck Accessories

GM Duramax 6.6L 2004.5-2005 LLY

Thoroughbred Diesel specializes in Duramax diesel performance. We offer a large selection of performance related products for your 04.5-05 6.6L LLY GM Duramax diesel. Shop below for all of the popular Duramax diesel addons such as programmers, intakes, exhaust systems, clutches, exhaust brakes, and so much more! With warehouses all across the country when you order from Thoroughbred Diesel you can rest assured we get your package on the way to your front door as soon as possible. Free shipping on most products online at ThoroughbredDiesel.com.

Attention: If you have a GM Duramax, please verify your engine type before ordering any product. You will either have an LB7, LLY, or LBZ motor, many of the products we offer are not interchangeable with all three engines.

To Verify: Check the 8th digit in the VIN number,
If it's a 1 you have the LB7 motor
If it's a 2 you have the LLY motor

Jump to Most Popular Performance Products

Programmers/Chips/Modules
Cold Air Intakes
Exhaust Systems
Exterior Truck Accessories
much more listed below in alphabetical order

Package Deals - If you are looking to purchase a programmer, exhaust, and intake all at the same time, pick up the phone and give us a call. We offer discounts on package deals. Discount depends on which brands you buy from us, certain brands we can offer very big savings, other brands not as much, but no matter what, we can give you a great deal!