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Rudy's Performance Parts

Rudy's Upgraded Cast Manifolds for 17-24 Chevrolet/GMC L5P 6.6L Duramax Diesel

Rudy's Upgraded Cast Manifolds for 17-24 Chevrolet/GMC L5P 6.6L Duramax Diesel

$359.95 USD
$359.95 USD
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Shipping calculated at checkout.

Out of stock

Shipping & returns

Shipping is calculated at checkout by size and destination. Most in-stock gear ships within a few business days; large freight items (campers, racks, bumpers) are made to order. Wrong fitment? Send it back within 30 days — we'll help you find the part that does fit.

Fitment & build help

Not sure if this fits your platform? Tell us your year, make, model, and trim — we'll confirm before you order. For bigger builds, we'll help you plan the full stack.

Warranty

Every product on this site ships through authorized channels with full manufacturer warranty. If something breaks in normal use, we'll help you get it resolved.

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Crafted from high-silicon molybdenum (hi-sil moly) iron, these manifolds are engineered to enhance your vehicle's performance by optimizing power and flow dynamics. The entire exhaust system is meticulously designed to lower exhaust gas temperatures (EGTs), boost turbo spool-up, and improve overall power output and fuel efficiency, all while maintaining superior reliability.

Key Features:

  • Significant Reduction in Back Pressure: Improves exhaust flow for better performance.
  • High-Flow Manifold Construction: Made from durable cast hi-sil moly iron for maximum strength and longevity.
  • Sensor Compatibility: Built-in bosses pre-drilled and tapped with 1/8” NPT fittings, ready for easy installation of an EGT gauge sensor.

Fitment:

  • 2017-2024 GMC Sierra 2500/3500HD L5P 6.6L Duramax
  • 2017-2024 Chevrolet Silverado 2500/3500HD L5P 6.6L Duramax

 

  • Ships from San Diego

    We ship from our San Diego dealer network. Most in-stock gear goes out within a few business days — shipping's calculated at checkout by size and destination.

  • Wrong fitment? We make it right.

    If a part doesn't fit your platform the way it should, send it back. We handle the return and find you the part that does.

  • Authorized dealer support

    Every product moves through proper channels. Full manufacturer warranty, real tech support — no gray-market headaches.