All-in-One Performance Kit for Your Duramax

Are you on the hunt for a kit that truly has it all? Look no further! Our performance kit features a mandrel bent 4 1/2 inch intake tube designed to maximize airflow, paired with HSP's signature heat shield box. This clever design keeps unwanted hot air from entering your cold air intake, because for every 1-degree rise in intake air temperature, you could lose up to 3 horsepower!

Turbo Mouthpiece for Enhanced Functionality

This kit also includes HSP's high flow turbo mouthpiece, which allows you to reroute your factory PCV system and remove the factory resonator box. Say goodbye to unwanted engine oil gumming up your turbo and intake system! With our 3-inch mandrel bent hot side and cold side tubes, along with our max flow Y-bridge and turbo mouthpiece, you're set for a smoother ride.

Durability Meets Performance

We know the factory hot side intercooler tube on your 2011-2016 Duramax can be a troublemaker. Its two-piece design often leads to crimped boots that fail under heat and pressure. Don't wait until you're stranded on the side of the road! Our kit replaces all those failure-prone components and comes with race-proven 5-layer silicone boots, ensuring you enjoy years of worry-free driving. With the Max flow Y-bridge and turbo mouthpiece, you can expect noticeable performance improvements while keeping engine temperatures in check.

Exhaust Efficiency and Aesthetic Appeal

To help get those exhaust gases out efficiently, this kit includes our factory replacement 2-inch up pipes. Crafted with .120 inch wall tubing and the toughest bellows on the market, these up pipes are built to last alongside your truck. Plus, we’ve added a factory replacement coolant tank to keep your engine bay looking sharp.

Our all-aluminum coolant tank features a built-in low coolant sensor, and to top it all off, we’ve included an upper coolant tube that adds a pop of color to your engine bay. This tube also provides extra space for dual pumps, eliminating the risk of hose rubbing against the wheel.

Included Components

• 3x 3 inch x 4 inch straight boot
• 7x 3 inch t-bolt clamps
• 1x 2.25 inch - 3 inch reducer boot
• 1x 2.25 inch t-bolt clamp
• 1x Duramax premade hose
• 1x M6x1.0x16mm flange bolt
• 4x M6x1.0x20mm flange bolt
• 2x M6x1.0x25mm flange bolt
• 4x 1/2 inch worm gear clamps
• 1x 5/8 inch worm gear clamp
• 2x 1/8 inch NPT brass plug
• 1x rear cover coolant plug
• 1x coolant plug o-ring
• 1x 3/4 inch to 5/8 inch heater hose connector
• 2x 3/8 inch coolant plug
• 4x M4x.7x10mm bolt
• 3x 10-32 x 3/8 inch button head screws
• 4x 1/8 inch aluminum rivet
• 1x 4 inch - 4.5 inch reducer boot
• 1x 4 inch t-bolt clamp
• 1x 4.5 inch t-bolt clamp
• 1x 4.5 inch filter
• 1x radiator cap
• 1x 1 inch worm gear clamp
• 1x low coolant sensor
• 1x 1/2 inch NPT float switch
• 1x 1.75 inch x 3 inch straight boot
• 1x 1.75 inch 90 degree boot
• 2x up-pipe gasket (manifold side)
• 4x 1 3/4 inch worm gear clamps
• 2x up-pipe gasket (turbo side)

Compatibility

This kit is compatible with LML models: 11+ VIN Code 8. To identify your engine code, just check the 8th character of your VIN number. The 10th character will tell you the year of your truck.