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PCV Reroute Fitting w/ Reroute Resonator Plug for GM 6.6L Duramax

PCV Reroute Fitting w/ Reroute Resonator Plug for GM 6.6L Duramax is a high-quality aluminum fitting kit priced at $16.72. Designed for 2004.5–2010 Duramax engines, it reroutes the factory PCV system to reduce oil consumption and improve engine bay cleanliness, ideal for diesel performance enthusiasts seeking reliability upgrades.

$16.72

● In stock

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

Key features

  • Fits 2004.5–2010 6.6L GM Duramax
  • Includes reroute fitting, port plug, resonator plug
  • Reduces oil consumption and intake coking
  • Improves cold air intake charge quality
  • Durable high-quality construction
  • Simplifies engine bay layout
  • Works with user-supplied hoses

Pros

  • +Affordable reliability upgrade
  • +Easy to install with basic tools
  • +Reduces carbon buildup in intake
  • +Cleaner engine bay appearance
  • +Improves long-term engine health
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Cons

  • Requires separate hose purchase
  • Not a full catch can system

About PCV Reroute Fitting w/ Reroute Resonator Plug for GM 6.6L Duramax

What is PCV Reroute Fitting w/ Reroute Resonator Plug for GM 6.6L Duramax?

The PCV Reroute Fitting w/ Reroute Resonator Plug for GM 6.6L Duramax is a performance upgrade designed to eliminate the factory Positive Crankcase Ventilation (PCV) system’s inefficiencies. Engineered for 2004.5–2010 GM 6.6L Duramax trucks, this kit includes a reroute fitting, port plug, and resonator plug to redirect crankcase vapors away from the intake system. This prevents oil contamination, reduces carbon buildup, and enhances engine longevity. Sold by Lab Work Auto, the kit is made from durable materials and offers a clean, reliable solution for diesel owners focused on maintenance and performance.

Key features

  • Direct Fit Compatibility — Designed specifically for 2004.5–2010 6.6L GM Duramax engines.
  • Complete Kit Included — Comes with PCV reroute fitting, reroute port plug, and resonator plug.
  • Improves Engine Reliability — Eliminates factory PCV system to reduce oil consumption and intake coking.
  • Clean Engine Bay Upgrade — Removes unnecessary hoses and components for a streamlined look.
  • Enhanced Air Intake Purity — Helps deliver cleaner, cooler air to the intake manifold.
  • 100% New High-Quality Build — Ensures durability and leak-free performance.
  • Hose Ready Design — Works with user-supplied hoses for custom routing.

Who is PCV Reroute Fitting w/ Reroute Resonator Plug for GM 6.6L Duramax for?

This product is ideal for Duramax diesel owners, DIY mechanics, and performance enthusiasts who want to improve engine reliability and reduce maintenance issues caused by the stock PCV system. It’s especially valuable for trucks used for towing, off-roading, or high-mileage driving where engine stress is greater. Those upgrading their intake system or installing cold air intakes will benefit from cleaner airflow.

How does PCV Reroute Fitting w/ Reroute Resonator Plug for GM 6.6L Duramax compare?

Compared to stock PCV systems, this reroute kit eliminates a known failure point in 6.6L Duramax engines. Unlike basic block-off plates, it includes a full reroute solution with proper venting. It outperforms standard polypropylene reroute kits by offering a complete plug-and-route system. When compared to full catch can setups, it’s a more affordable and simpler alternative while still delivering significant reliability gains.

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Best use cases

  • Prevent Duramax intake manifold clogging
  • Upgrade during cold air intake install
  • Reduce oil consumption in high-mileage trucks
  • Clean up engine bay after tuner install
  • DIY diesel maintenance improvement
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Is PCV Reroute Fitting w/ Reroute Resonator Plug for GM 6.6L Duramax right for you?

This kit is best for Duramax owners with 2004.5–2010 trucks seeking to improve engine reliability. Ideal for DIYers with basic mechanical skills. No advanced tools required. Consider pairing with an inline oil catch can for enhanced protection. Alternatives include full catch can systems or OEM-style replacements, but this offers a balanced upgrade in cost and performance.

How it compares: Compared to basic PCV block-off kits, this includes both reroute and plug components for complete system removal. It’s simpler than full catch can setups but offers more functionality than plastic reroute fittings.

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Frequently Asked Questions

What does the PCV reroute fitting do for a Duramax?

It redirects crankcase vapors away from the intake system, preventing oil and carbon buildup in the intake manifold, which improves engine reliability and reduces maintenance on 6.6L Duramax engines.

Does this kit include all parts needed for installation?

Yes, it includes the PCV reroute fitting, reroute port plug, and resonator plug. You’ll need to supply your own hose for rerouting, but no additional fittings are required.

How difficult is it to install the reroute fitting?

Installation is moderate, requiring basic hand tools and about 1–2 hours. It’s suitable for DIYers familiar with engine bay work but may challenge complete beginners.

Is this compatible with 2001–2004 LB7 Duramax engines?

No, this kit is designed specifically for 2004.5–2010 LLY, LBZ, and LMM Duramax engines. It is not compatible with earlier LB7 models due to different intake configurations.

Can I use this with a cold air intake system?

Yes, this reroute fitting is ideal when upgrading to a cold air intake, as it prevents oil contamination and maintains clean airflow for better performance and engine protection.

How much does PCV Reroute Fitting w/ Reroute Resonator Plug for GM 6.6L Duramax cost?

PCV Reroute Fitting w/ Reroute Resonator Plug for GM 6.6L Duramax is $16.72 at Lab Work Auto. Prices may change — click through to Lab Work Auto for the latest.

Is PCV Reroute Fitting w/ Reroute Resonator Plug for GM 6.6L Duramax in stock at Lab Work Auto?

Yes, PCV Reroute Fitting w/ Reroute Resonator Plug for GM 6.6L Duramax is currently in stock at Lab Work Auto.

Specifications

SKU
F7-6167
Last updated May 14, 2026