Login
My Account
My Cart
The site navigation utilizes arrow, enter, escape, and space bar key commands. Left and right arrows move across top level links and expand / close menus in sub levels. Up and Down arrows will open main level menus and toggle through sub tier links. Enter and space open menus and escape closes them as well. Tab will move on to the next part of the site rather than go through menu items.
Enter your truck info so we can recommend the right products for you.
Can't find it? Call us at 859-737-4966 for free advice.
Menu
Air Filters
Air Intakes
Clutches
Cooling System
Drive Line
Electronics
Engine
Engine Parts
Exhaust
Exhaust Brakes
Fabrication Components
Fluids
Fuel Systems
Fuel Tanks
Gauges
Injection Pumps
Injectors & Related Items
Intake Manifolds
Intercoolers
Lift Pumps
Programmers
Silicone Hoses
Suspension
Tools
Transmissions
Turbochargers
Water Meth Inj Kits
Thoroughbred Diesel has been your online performance headquarters since 2002. We know how to get the most performance out of your pickup truck and offer all of today's most popular diesel performance products.
Brakes
ECM
Electrical Components
Engine Components
Exterior Replacement Parts
Filters
Fuel Pumps
Gaskets & Seals
Interior Replacement Parts
Oil Pumps
Starters & Alternators
Thoroughbred Diesel offers OEM and diesel stock parts for your diesel pickup truck. At Thoroughbred Diesel, you can buy stock diesel replacement parts such as injectors, fuel pumps, ball joints, track bars, turbos, and more for your diesel truck.
Injection Pump
Injector
Turbo Charger
Batteries
Bed Covers
Bumpers
Fender Flares
Floor Mats and Liners
Grilles
Horns
Lighting
Mud Flaps
Nerf Bars
Running Boards
Seats & Covers
Shift Knobs
Spare Tire Carriers
Storage
Tailgate Nets
Tool Box
Truck Steps
Ventvisors
Wheels
Winches
Make heads turn with custom truck accessories from Thoroughbred Diesel.
Ball Mounts
Gooseneck & Fifth Wheel
Hitch Balls
Hitch Pins & Hitch Locks
Hitch Steps
Hitches
Loading Ramps
Shackles & Tow Hooks
Tow Brakes
Tow Mirrors
Towing Accessories
Weight Distributing Hitchs
Banners
Decals
Hats
Hoodies
License Plates
Shirts
Tank Tops
Show your support with a Thoroughbred Diesel t-shirt, sweatshirt, or sticker decal.
Thoroughbred Sku #: HSP-D-294-HSP-SB
Year/Make/Model: {{year}} {{make.Name}} {{model.Name}} Edit
$1,966.50 On Sale! $1,769.85
2004 - 2005 Chevy Silverado 2500
2004 - 2005 Chevy Silverado 3500
2004 - 2005 GMC Sierra 2500
2004 - 2005 GMC Sierra 3500
Product Name:HSP Diesel Deluxe No Bridge/Cold Side Bundle Kit - 2004.5-2005 Chevrolet/ GMC - Silk Satin Black Manufacturer: HSP Diesel Manufacturer Part #: HSP-D-294-HSP-SB Thoroughbred Diesel Part #: HSP-D-294-HSP-SB Fitment Notes: 2004.5-2005 Chevrolet/ GMC
The 294-HSP is best known as the Max Air Flow Bundle for the 2004.5 and 2005 LLY Duramax Chevrolet and GMC trucks. This bundle kit features everything you could need from the HSP Diesel lineup to make more power and get the maximum performance out of your LLY Duramax all while keeping your factory emissions!
What is the Max Air Flow Bundle for the LLY?The Max Air Flow Bundle for the LLY is a complete kit from HSP Diesel. Now what we mean by that is this kit features everything that HSP Diesel makes for the LLY Duramax to take it to the next level in performance and looks. This is the bundle kit that you want if you are looking to do everything you can all at once to maximize your factory setup and drop-in style aftermarket parts.
Tell us about the Billet Forward Facing Thermostat Housing that is in the Max Air Flow BundleThe Billet Forward Facing Thermostat housing that comes with the Max Air Flow Bundle is a great piece of the puzzle. What this does is helps reduce the bottleneck that we see in the coolant system from the factory. The stock setup has a cross-over that goes over the driver's side valve cover. This removes that and makes space where necessary, all while giving the engine the ability to cool better.
Tell us about the Hot Side Intercooler Tube that is in the Max Air Flow BundleThe factory Hot Side Intercooler pipe is not the best design. The major issue that is found on the stock application is that the power steering line rubs through the pipe and we also see issues with the boots staying on the pipe. Both of these issues cause boost leaks which cause a loss of power and overall performance. HSP Diesel solves both of these problems by changing the angle the tube goes into the intercooler. We also bumped the diameter of the tube to 3 Inch and that made a difference in the air we can push through to the charge air system.
Tell us about the Replacement Coolant tank that is in the Max Air Flow BundleThe factory coolant tank is very lackluster, to say the least. It also fails often due to cracking in the plastic. So we made this Replacement Coolant tank that is made of metal that is then welded together to fit perfectly in the factory space. The Replacement Tank is also fitted with all the factory provisions and fittings that are needed and features the factory low coolant sensor to prevent any issues with any engine lights.
Tell us about the Cold Air Intake in the Max Air Flow BundleThe Cold Air Intake that is inside the Max Air Flow Bundle is something that you don't want to miss out on. Utilizing a 4 1/2 Inch mandrel-bent tubing you can force the maximum amount of air through that system. With HSP Diesels heat shield box that comes with our, Cold Air Intake will prevent the unwanted hot air from entering the system and keep you with the cool dense air. HSP Diesel has seen on average 20 additional horsepower and 58 pounds of torque. By design, this intake and heat shield box will not draw in air from the headlight bezel and fender port.
Tell us about the VGT Intake Mouthpiece in the Max Air Flow BundleThe VGT Intake Mouthpiece is a crucial component of the Max Air Flow Bundle. This piece allows all the air you are drawing in with the Cold Air Intake to actually make its way to the turbo. The factory Intake Mouthpiece is restrictive and just doesn't work like it needs to. With the HSP Diesel VGT Intake Mouthpiece, you will see added power and better spool-up times.
Tell us about the Cold Side Tube in the Max Air Flow BundleThe HSP Cold Side Tube was also bumped up to a 3 Inch diameter to flow perfectly with the rest of our pipes and increase the flow in the cold side as much as possible all while using the factory bridge.
What comes in the Max Air Flow Bundle?
What Does The HSP Max Air Flow Bundle Fit?
How do people know the VIN code?Engine code is dictated by the 8th character of the VIN number. The 10th character is the year of the truck.
Overview
Our Warranty
HSP No BS Limited Lifetime WarrantyAt HSP we believe in our products and we stand firmly behind every single one that leaves our facility. For years we have taken care of almost everything and anything that our customers had issues with, but we didn't have a set in stone warranty. We have always gone above and beyond for our customers which set us apart from the rest. We will continue that same standard, but now we are taking things to the next level.