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Labwork Valve Cooler Kit Fits For 2011-2015 GMC Chevy 6.6L Duramax LML Diesel

Labwork Valve Cooler Kit Fits For 2011-2015 GMC Chevy 6.6L Duramax LML Diesel is a direct-fit EGR bypass solution that improves turbo response and lowers EGTs. Priced at $52.70, it's ideal for diesel performance enthusiasts seeking reliable, no-modification installation to enhance engine efficiency and reduce heat buildup during heavy towing or daily driving.

$52.70

● In stock

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Price and availability may change. Click to see current details on Lab Work Auto.

Key features

  • Exact fit for 2011–2015 6.6L Duramax LML
  • EGR actuator and cooler bypass
  • Faster coolant recirculation
  • Lowers EGTs and intake temps
  • Retains stock intake and exhaust manifolds
  • Direct replacement, no modifications
  • 100% brand new, never used

Pros

  • +Improves turbo spool and throttle response
  • +Reduces carbon buildup in intake system
  • +Lowers engine operating temperatures
  • +Simple bolt-on design with no fabrication
  • +Cost-effective alternative to full deletes
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Cons

  • No installation instructions included
  • Professional installation strongly advised
  • May not comply with emissions regulations
  • Does not include tuning recommendations

About Labwork Valve Cooler Kit Fits For 2011-2015 GMC Chevy 6.6L Duramax LML Diesel

What is Labwork Valve Cooler Kit Fits For 2011-2015 GMC Chevy 6.6L Duramax LML Diesel?

This 100% brand-new Labwork Valve Cooler Kit is engineered specifically for 2011–2015 GMC and Chevrolet trucks equipped with the 6.6L Duramax LML diesel engine. It functions as an EGR (Exhaust Gas Recirculation) bypass system, redirecting exhaust gases away from the intake manifold to reduce carbon buildup, lower exhaust gas temperatures (EGTs), and improve overall engine efficiency. By allowing you to pass both the EGR actuator valve and EGR cooler while retaining your stock intake and exhaust manifolds, this kit offers a clean, direct-replacement solution with no modifications required.

Key features

  • Precise Fitment — Designed exclusively for 2011–2015 6.6L Duramax LML engines.
  • Improved Cooling — Enables faster coolant recirculation for reduced operating temperatures.
  • Better Turbo Response — Promotes quicker turbo spool and enhanced throttle response.
  • EGR Bypass Function — Skips EGR actuator and cooler to prevent clogging and heat retention.
  • Stock Compatibility — Retains original intake and exhaust manifolds without changes.
  • No Modifications Needed — Direct replacement installation with factory mounting points.
  • Professional Use Recommended — Intended for expert diesel technicians due to complexity.

Who is Labwork Valve Cooler Kit Fits For 2011-2015 GMC Chevy 6.6L Duramax LML Diesel for?

This kit is ideal for diesel truck owners focused on improving engine reliability and performance, especially those involved in towing, hauling, or frequent high-load operation. It suits DIY mechanics with advanced diesel experience or professionals aiming to reduce EGR-related failures. Not recommended for daily drivers requiring strict emissions compliance.

How does Labwork Valve Cooler Kit Fits For 2011-2015 GMC Chevy 6.6L Duramax LML Diesel compare?

Compared to full EGR delete systems, this kit offers a middle ground—reducing heat and carbon without removing major emissions components. It outperforms stock setups by enhancing airflow and cooling efficiency, while remaining less invasive than complete intake manifold replacements. Unlike universal kits, it ensures exact fitment and reliable sealing. It’s more cost-effective than integrated performance manifolds but requires professional tuning for optimal results.

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Best use cases

  • Heavy-duty towing applications
  • High-mileage diesel maintenance
  • Preventing EGR cooler failure
  • Performance upgrades for LML engines
  • Reducing intake carbon accumulation
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Is Labwork Valve Cooler Kit Fits For 2011-2015 GMC Chevy 6.6L Duramax LML Diesel right for you?

This kit suits experienced diesel owners or technicians upgrading 2011–2015 LML Duramax engines. Ideal for those avoiding EGR cooler failures or seeking improved thermal management. Requires mechanical expertise—professional installation is recommended. Consider alternatives like full EGR deletes or performance manifolds if emissions compliance isn't a concern. Always verify local regulations before purchase.

How it compares: Compared to standard EGR coolers and full delete kits, this bypass offers balanced performance gains without major system removal. It’s more reliable than stock units and less complex than aftermarket intakes, making it a smart upgrade for heat reduction and longevity in high-stress environments.

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Frequently Asked Questions

What does the Labwork Valve Cooler Kit do?

It bypasses the EGR actuator and cooler on 2011–2015 6.6L Duramax LML engines, reducing exhaust gas recirculation to lower EGTs, prevent carbon buildup, and improve turbo response without modifying the intake or exhaust manifold.

Does this kit require tuning after installation?

While not included, tuning is highly recommended after installation to ensure optimal performance and prevent error codes, as bypassing EGR components can trigger the engine control module.

How difficult is installation?

Installation is complex and involves working with exhaust and cooling systems. No instructions are provided, so professional diesel experience is strongly advised for proper fitment and function.

Is this kit legal for street use?

Bypassing EGR components may violate emissions regulations in some states and countries. This kit is intended for off-road or racing use only where permitted by law.

Can I reuse my stock parts with this kit?

Yes, this kit allows you to retain your original intake and exhaust manifolds while bypassing only the EGR actuator and cooler, making it a direct-replacement upgrade without major disassembly.

How much does Labwork Valve Cooler Kit Fits For 2011-2015 GMC Chevy 6.6L Duramax LML Diesel cost?

Labwork Valve Cooler Kit Fits For 2011-2015 GMC Chevy 6.6L Duramax LML Diesel is $52.70 at Lab Work Auto. Prices may change — click through to Lab Work Auto for the latest.

Is Labwork Valve Cooler Kit Fits For 2011-2015 GMC Chevy 6.6L Duramax LML Diesel in stock at Lab Work Auto?

Yes, Labwork Valve Cooler Kit Fits For 2011-2015 GMC Chevy 6.6L Duramax LML Diesel is currently in stock at Lab Work Auto.

Specifications

SKU
F8-013937
Last updated May 14, 2026