Intercooler Pipe Kit for 2017-2019 Chevy/GMC 2500HD/3500HD Duramax 6.6L L5P | SPELAB

Description

Stop Waiting for Your Factory Pipes to Blow. Bulletproof Your L5P.

The 2017-2019 6.6L L5P Duramax is an absolute towing monster, but its factory intercooler plumbing is a major weak link. The OEM hot side pipe bottlenecks down to a restrictive 2.5 inches, starving your turbo of air. Worse yet, the cold side utilizes a fragile, two-piece plastic design with weak clip-ring connections that are notorious for blowing apart under heavy boost or high heat, leaving you stranded on the side of the highway with a massive boost leak.

Unleash Unrestricted Airflow and Unmatched Reliability.
The SPELAB High-Flow Intercooler Pipe Kit replaces your failure-prone factory plastics and restrictive rubbers with massive, mandrel-bent aluminum tubing. Whether you are hauling a heavy 5th-wheel up a grade, running a performance tune, or simply want the peace of mind of a reliable daily driver, our kits deliver.

• Hot Side Upgrade: Replaces the crushed 2.5" OEM pipe with a massive 3" single-piece aluminum pipe for drastically lower Exhaust Gas Temperatures (EGTs) and faster turbo spool.

• Cold Side Upgrade: Replaces the weak 2-piece plastic pipe with a massive 3.5" aluminum pipe featuring CNC-machined flanges and a double O-ring seal to permanently stop boost leaks.

• The Full Bundle (Best Value): Upgrade both sides at once to completely bulletproof your L5P's airflow system and maximize your truck's true horsepower potential.

Key Features

• Massive Airflow Optimization
  Features a 3" Hot Side and 3.5" Cold Side mandrel-bent aluminum pipe. Eliminates the restrictive factory bottlenecks and turbulence, delivering a denser, faster charge of air to the engine for instant throttle response and quicker turbo spooling.

• Eliminates Blown Plastic Pipes (Cold Side)
  Ditches the fragile, two-piece OEM plastic pipe and weak factory clip-rings in favor of a single-piece aluminum tube with CNC-machined flanges and a double O-ring seal. Permanently prevents roadside blowouts and boost leaks, ensuring absolute reliability under heavy towing loads.

• Constant-Tension Spring Clamps
  Includes heavy-duty stainless steel spring-loaded T-bolt clamps. The springs compensate for extreme thermal expansion and contraction, ensuring a vice-like grip that won't vibrate loose over time.

• 5-Ply Reinforced Silicone Boots
  Upgrades the weak factory rubber to heavy-duty, multi-layer silicone. Prevents the boots from swelling, ballooning, or tearing under high boost pressures and extreme under-hood temperatures.

• Retains Factory Sensors (Cold Side)
  The Cold Side pipe features a precision-integrated threaded bung. Allows you to easily reinstall your factory Intake Air Temperature (IAT) sensor for perfect, code-free engine operation.

• Direct Bolt-On Installation
  Engineered to be a perfect drop-in replacement. Requires absolutely no custom fabrication, cutting, or ECU tuning to install on a stock truck.
  

Fitment

• 2017-2019 Chevrolet Silverado 2500HD & 3500HD 6.6L L5P Duramax
• 2017-2019 GMC Sierra 2500HD & 3500HD 6.6L L5P Duramax
  

FITMENT & COMPATIBILITY NOTICE: These pipes are engineered to align with the factory turbocharger and factory intercooler. If you have installed an aftermarket turbo or intercooler that changes the inlet/outlet geometry, fitment is not guaranteed.

Ideal Usage Scenarios:

• Heavy Towing & Hauling: Essential for keeping EGTs low and ensuring burst-proof reliability when pulling heavy RVs on long inclines.

• Performance Tuning: The perfect foundational "breathing" modification to support the increased boost pressures generated by aftermarket ECU tunes.

Specifications

What's in the Box

Hot Side Kit:

• 1x 3.0" Aluminum Hot Side Intercooler Pipe (Driver Side)
• 2x 5-Ply Silicone Boots
• 4x Spring-Loaded Stainless T-Bolt Clamps

Cold Side Kit:

• 1x 3.5" Aluminum Cold Side Intercooler Pipe (Passenger Side)
• 1x 5-Ply Silicone Boot
• 2x Stainless Steel T-Bolt Clamps
• 1x CNC Double O-Ring Assembly (Pre-installed)

FAQs

Q: Should I buy the Hot Side, Cold Side, or both?
A: We highly recommend the Full Bundle. The Hot Side is the biggest restriction for airflow (only 2.5" stock), while the Cold Side is the biggest risk for catastrophic failure (made of 2-piece plastic). Upgrading both at once gives you maximum performance and total peace of mind.

Q: Do I need a custom ECU tune after installing these pipes?
A: No! These pipes are a direct-fit mechanical upgrade that requires zero tuning. They work flawlessly on stock trucks to improve spool and lower EGTs. However, if you are running a tuner, these high-flow pipes will easily handle the increased boost.

Q: Why do you use spring-loaded clamps on the Hot Side?
A: The Hot Side pipe connects directly to the turbocharger, which generates extreme heat. As the metal expands and contracts, standard clamps can loosen. Our spring-loaded clamps maintain constant, dynamic tension through all heat cycles, providing the ultimate blowout-proof seal.

Q: Does the Cold Side pipe delete my IAT sensor?
A: No. The SPELAB Cold Side pipe features a CNC-machined bung that allows you to easily reinstall your factory Intake Air Temperature (IAT) sensor.

Q: Is there any maintenance required?
A: We highly recommend checking the torque on all T-bolt clamps during your routine oil changes, as high-vibration diesel engines and intense thermal cycling can occasionally cause hardware to settle.