• Dieselr Aluminized Downpipe Back Exhaust Single | 2500/3500 6.6L GM DURAMAX LB7 (2001-2004.5) Aluminized Exhaust Dieselr Parts 4-inch Exhaust with Muffler
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  • Aluminized

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

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

Dieselr Parts

SKU: 256-701134

$606.00 USD
$650.00 USD $606.00 USD Sale
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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 LB7 GM Duramax
Year(s)
2001-2004.5
Product type
Aluminized Exhaust

The Dieselr Aluminized Downpipe Back Exhaust Single (2001–2004.5 6.6L Duramax LB7) is built for Chevy Silverado and GMC Sierra 2500/3500 owners who demand a clean fit, stronger flow, and long-lasting reliability. Crafted from 4-inch and 5- inch  heavy-duty aluminized steel, this system improves exhaust performance, reduces EGTs, and provides a deep, refined tone under load.

Each Dieselr exhaust is mandrel-bent for smooth, unrestricted flow and precision-welded for durability. The aluminized finish resists rust, corrosion, and heat fatigue—perfect for work trucks and daily-driven Duramax platforms. It mounts directly to OEM hangers for a secure, factory-style fit that installs easily without cutting or welding.

Dieselr systems are tested on real 6.6L Duramax trucks for verified fitment and field performance. This is exhaust engineering done right—built strong, built simple, built to last.

Key Features

  • 4", 5" aluminized steel construction for long-term strength
  • Mandrel bends for smooth, efficient flow
  • OEM hanger alignment for clean installation
  • Corrosion-resistant finish for durability in harsh conditions

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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