Free Shipping Qualifying Orders Over $199 *
Secure Checkout
Shop by your truck
2011-2015 6.6L LML Duramax Twisted Steel Headers With Up-Pipes & Down-Pipe AFE 48-34139

Thumbnail Filmstrip of 2011-2015 6.6L LML Duramax Twisted Steel Headers With Up-Pipes & Down-Pipe AFE 48-34139 Images

    Boost Your LML Duramax Performance with the AFE 48-34139 Twisted Steel Headers, Up-Pipes & Down-Pipe Kit

    Take your LML Duramax to the next level with the AFE 48-34139 Twisted Steel Headers, Up-Pipes & Down-Pipe Kit. Designed for maximum performance and durability, this comprehensive exhaust upgrade is crafted from premium 304 stainless steel, ensuring robust construction and long-lasting reliability in any driving condition.

    The 2-inch mandrel-bent headers are engineered for superior exhaust flow, reducing backpressure and increasing power throughout the entire RPM range. Paired with the 3-inch mandrel-bent down-pipe, this system significantly enhances exhaust flow and horsepower, allowing your Duramax to breathe more freely and unleash its full potential.

    The heavy-duty up-pipes feature 4-inch 304 stainless steel flex tubes with internal interlock liners, providing exceptional strength and flexibility for high-performance applications. This kit is designed with dual 1/8” NPT exhaust gas temperature (EGT) ports, offering multiple monitoring options to help you keep track of your engine's performance.

    Features and Benefits:

    • Premium Construction: Crafted from 304 stainless steel for superior strength, durability, and corrosion resistance.
    • Optimized Exhaust Flow: 2-inch mandrel-bent headers and 3-inch down-pipe reduce backpressure and increase horsepower and torque.
    • Heavy-Duty Up-Pipes: 4-inch flex tubes with internal interlock liners provide enhanced strength and longevity under extreme conditions.
    • Versatile EGT Monitoring: Includes two 1/8” NPT EGT ports for convenient exhaust gas temperature monitoring.
    • Comprehensive Upgrade: Complete kit designed to deliver maximum performance gains across the entire RPM range.

    Upgrade your LML Duramax with the AFE 48-34139 Twisted Steel Headers, Up-Pipes & Down-Pipe Kit and experience unparalleled power, efficiency, and durability. Order yours today and transform your truck’s performance.

    Purchase 2011-2015 6.6L LML Duramax Twisted Steel Headers With Up-Pipes & Down-Pipe AFE 48-34139

    Not Yet Rated!

    2011-2015 6.6L LML Duramax Twisted Steel Headers With Up-Pipes & Down-Pipe AFE 48-34139

    SKU: afe48-34139
    $2,654.01
    Shipping restricted to California

    Qualifies for Free Shipping Over $199



    Fits: LML Duramax 2011-2015
     
    Free shipping on orders over $199**Contiguous US only
    Most in-stock orders ship in 1–2 business days
    Diesel experts: 615-962-8291
    Fits these vehicles
    • 2011 Chevrolet 6.6L LML Duramax
    • 2011 GMC 6.6L LML Duramax
    • 2012 Chevrolet 6.6L LML Duramax
    • 2012 GMC 6.6L LML Duramax
    • 2013 Chevrolet 6.6L LML Duramax
    • 2013 GMC 6.6L LML Duramax
    • 2014 Chevrolet 6.6L LML Duramax
    • 2014 GMC 6.6L LML Duramax
    • 2015 Chevrolet 6.6L LML Duramax
    • 2015 GMC 6.6L LML Duramax
    Warranty: 2 Year Limited

    Boost Your LML Duramax Performance with the AFE 48-34139 Twisted Steel Headers, Up-Pipes & Down-Pipe Kit
    Take your LML Duramax to the next level with the AFE 48-34139 Twisted Steel Headers, Up-Pipes & Down-Pipe Kit. Designed for maximum performance and durability, this comprehensive exhaust upgrade is crafted from premium 304 stainless steel, ensuring robust construction and long-lasting reliability in any driving condition.
    The 2-inch mandrel-bent headers are engineered for superior exhaust flow, reducing backpressure and increasing power throughout the entire RPM range. Paired with the 3-inch mandrel-bent down-pipe, this system significantly enhances exhaust flow and horsepower, allowing your Duramax to breathe more freely and unleash its full potential.
    The heavy-duty up-pipes feature 4-inch 304 stainless steel flex tubes with internal interlock liners, providing exceptional strength and flexibility for high-performance applications. This kit is designed with dual 1/8” NPT exhaust gas temperature (EGT) ports, offering multiple monitoring options to help you keep track of your engine's performance.
    Features and Benefits:
    Premium Construction: Crafted from[...]

    Boost Your LML Duramax Performance with the AFE 48-34139 Twisted Steel Headers, Up-Pipes & Down-Pipe Kit

    Take your LML Duramax to the next level with the AFE 48-34139 Twisted Steel Headers, Up-Pipes & Down-Pipe Kit. Designed for maximum performance and durability, this comprehensive exhaust upgrade is crafted from premium 304 stainless steel, ensuring robust construction and long-lasting reliability in any driving condition.

    The 2-inch mandrel-bent headers are engineered for superior exhaust flow, reducing backpressure and increasing power throughout the entire RPM range. Paired with the 3-inch mandrel-bent down-pipe, this system significantly enhances exhaust flow and horsepower, allowing your Duramax to breathe more freely and unleash its full potential.

    The heavy-duty up-pipes feature 4-inch 304 stainless steel flex tubes with internal interlock liners, providing exceptional strength and flexibility for high-performance applications. This kit is designed with dual 1/8” NPT exhaust gas temperature (EGT) ports, offering multiple monitoring options to help you keep track of your engine's performance.

    Features and Benefits:

    • Premium Construction: Crafted from 304 stainless steel for superior strength, durability, and corrosion resistance.
    • Optimized Exhaust Flow: 2-inch mandrel-bent headers and 3-inch down-pipe reduce backpressure and increase horsepower and torque.
    • Heavy-Duty Up-Pipes: 4-inch flex tubes with internal interlock liners provide enhanced strength and longevity under extreme conditions.
    • Versatile EGT Monitoring: Includes two 1/8” NPT EGT ports for convenient exhaust gas temperature monitoring.
    • Comprehensive Upgrade: Complete kit designed to deliver maximum performance gains across the entire RPM range.

    Upgrade your LML Duramax with the AFE 48-34139 Twisted Steel Headers, Up-Pipes & Down-Pipe Kit and experience unparalleled power, efficiency, and durability. Order yours today and transform your truck’s performance.

    No Questions asked yet!



    Review 2011-2015 6.6L LML Duramax Twisted Steel Headers With Up-Pipes & Down-Pipe AFE 48-34139
    No Reviews Yet!

    AFE Power 48-34139 Installation Instructions

    Proposition 65 Warning Information -  P65Warnings.ca.gov