FITMENT
- 2011-2016 6.6L Chevy GMC Duramax LML 2500 HD 3500 HD Diesel.
DESCRIPTION
Product Overview
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The 2011–2016 LML Duramax uses a complex EGR system that constantly recirculates abrasive exhaust soot back into your clean intake, mixing with oil to form a thick, engine-choking sludge. Over time, extreme thermal cycles cause the internal cooler passages to crack.
- Once cracked, coolant leaks directly into your intake, leading to mystery coolant loss, white smoke, or even catastrophic engine hydrolock. This heavy-duty kit completely removes the failure-prone cooler assembly to safeguard your engine and restore its breathability.
Key Features
- Premium Billet & Stainless Steel Build: Features a CNC-machined anodized aluminum intake plate and heavy-duty stainless steel exhaust plate.
- Zero Carbon Soot Build-Up: Completely blocks dry, abrasive soot from recirculating into your clean intake air, preventing the formation of thick, concrete-like sludge in your intake manifold and grid heater.
- Quicker Turbo Spool & Response: By sealing off the massive exhaust pressure leaks created by the factory EGR bypass, the exhaust gas is routed directly through turbocharger for faster boost buildup.
- Closes the Leak Risk: Factory EGR coolers frequently crack internally, allowing engine coolant to seep into the cylinders. This kit removes the coolers entirely, bypassing the coolant lines safely to eliminate mystery coolant loss, white smoke, and hydrolock risks.
FAQ
Q: How does removing the EGR coolers make future under-hood maintenance easier?
A: The factory dual-cooler assembly is incredibly bulky and sits right on top of key engine components. Removing it completely opens up the passenger side of your motor, making future tasks—like servicing fuel injectors, glow plugs, or up-pipes—ten times easier.
Q: Why are there two black anodized t-fittings (barbed connectors) and brass fittings?
A: They are for bypassing and routing the remaining heater core/coolant lines. this kit includes heavy-duty black anodized fittings and brass adapters to cleanly splice, plug, or reroute the coolant sensors and lines back into your truck's cooling system—ensuring your heating system and engine cooling function exactly as they should post-delete.
Q: What are the two black, oval-shaped plates with O-rings in the center?
A: These are the CNC-machined block-off plates.Crafted from high-grade anodized billet aluminum, these plates seal the open ports left on your intake and exhaust manifolds once the factory EGR valve and cooler piping are unbolted.
Q: How does this kit lower coolant temperatures faster?
A: The stock coolant struggles through the highly restrictive chambers of the dual EGR coolers. By removing these coolers and utilizing our high-flow bypass system, engine coolant recirculates much faster—dropping overall temperatures and improving high-load towing stability.
