• Dieselr Aluminized Downpipe Back Exhaust Single | Cab & Chassis GM 2500/3500 6.6L DURAMAX L5P 2017-2019 Aluminized Race Pipe Dieselr Parts 4-inch Downpipe Back Exhaust with Muffler
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  • Aluminized

Dieselr Aluminized Downpipe Back Exhaust Single | Cab & Chassis GM 2500/3500 6.6L DURAMAX L5P 2017-2019

Dieselr Aluminized Downpipe Back Exhaust Single | Cab & Chassis GM 2500/3500 6.6L DURAMAX L5P 2017-2019

Dieselr Parts

SKU: 256-420134

$805.00 USD
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Quick Specs

Material American aluminized steel 🇺🇸
Tubing 16-gauge, mandrel-bent in Canada 🇨🇦
Hangers Contour-bent, OE locations
Clamps Perfect Fit Lap Joint Exhaust Band clamps
Fitment Direct bolt-on; no cutting required

Vehicle Fitment

Make
6.6L L5P GM Duramax
Year(s)
2017-2019
Product type
Aluminized Exhaust

The Dieselr Aluminized Downpipe Back Exhaust (2017–2019) is a precision-built 4-inch system designed for high-demand diesel platforms that need cleaner flow and reliable construction. Made from heavy-gauge aluminized steel, this exhaust system delivers consistent performance and dependable durability under continuous heat and load.

Each Dieselr exhaust is mandrel-bent for uniform airflow and TIG-welded to prevent leaks and stress fractures. The aluminized finish resists corrosion, salt, and moisture—ideal for fleets and performance-driven diesel setups. Installation is direct and secure thanks to factory-style mounting points and reinforced hanger alignment.

Purpose-built for reliability, Dieselr aluminized systems are field-tested for long-term strength and precision fitment—steel engineered to work hard and last longer.

Key Features

  • 4″ aluminized steel construction for maximum strength and heat resistance
  • Mandrel bends for smooth, unrestricted flow
  • OEM-style fitment for fast installation and tight seal
  • Corrosion-resistant finish for extended service life

FAQs

Aluminized vs. stainless — which should I choose?
Aluminized offers excellent value and everyday durability; stainless maximizes corrosion resistance in harsh climates. Sound and flow are comparable in like-for-like systems.
Will this system drone?
Our bend geometry and muffler selections minimize cabin drone at highway speeds while preserving a confident diesel tone.
Is it truly bolt-on?
Yes—OE locations, contour-bent hangers, and Perfect Fit Lap Joint Exhaust Band clamps simplify install with hand tools. Remember to re-torque clamps after 100–150 miles.

Why Dieselr Aluminized?

Dieselr Corp delivers diesel performance parts engineered for a clean fit, durable service life, and confident sound control. Our aluminized systems balance corrosion resistance, weight, and cost for daily duty and long-haul reliability—backed by real human customer service.

  • American-sourced aluminized steel, mandrel-bent in Canada
  • 16-gauge tubing with contour-bent hangers for OE-clearance
  • Perfect Fit Lap Joint Exhaust Band clamps for a secure, leak-resistant, direct-fit install
  • Designed to maintain exhaust velocity and reduce drone

For maximum results, pair with our Dieselr Signature EGR Upgrade Kits and industry-leading Dieselr performance tuning.

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