• Dieselr Aluminized 4" CAT Back Exhaust Single | 2500/3500 6.6L GM DURAMAX LB7 (2001-2004.5) Aluminized Exhaust Dieselr Parts
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  • Aluminized

Dieselr Aluminized 4" CAT Back Exhaust Single | 2500/3500 6.6L GM DURAMAX LB7 (2001-2004.5)

Dieselr Aluminized 4" CAT Back Exhaust Single | 2500/3500 6.6L GM DURAMAX LB7 (2001-2004.5)

Dieselr Parts

SKU: 256-801134

$550.00 USD
$600.00 USD $550.00 USD Sale
Shipping calculated at checkout.

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 LB7 GM Duramax
Year(s)
2001-2004.5
Product type
Aluminized Exhaust

The Dieselr Aluminized 4" Cat Back Exhaust Single (2001–2004.5 6.6L Duramax LB7) is built for Chevy Silverado and GMC Sierra 2500/3500 owners who need a reliable, performance-focused exhaust system that lasts. Constructed from 4-inch heavy-duty aluminized steel, it provides smoother exhaust flow, a refined diesel tone, and long-term corrosion resistance.

Each Dieselr cat back system is mandrel-bent for consistent, unrestricted flow and precision-welded for durability. The aluminized finish withstands heat, moisture, and road salt, making it ideal for daily-driven or work-heavy Duramax trucks. Installation is simple with OEM hanger alignment, ensuring a clean fit without modifications.

Engineered and tested on real 6.6L Duramax platforms, Dieselr’s aluminized cat back systems deliver dependable flow and fitment you can trust—no noise, no gimmicks, just results.

Key Features

  • 4" aluminized steel construction for long-term reliability
  • Mandrel bends for smooth, efficient exhaust flow
  • OEM hanger fitment for easy installation
  • Corrosion-resistant finish for lasting durability

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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