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Magnaflow

MagnaFlow Aluminized Custom Builder Pipe Series Downpipe-Back Performance Exhaust System 18980

$871.38 $565.00 Save $306.38

SKU: M001 18980

Out of Stock
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Magnaflow 18980 is a 4-inch mandrel-bent aluminized steel downpipe-back single exhaust system with a side exit, designed for 2001-2004 6.6L Duramax Chevrolet Silverado 2500 HD Extended and Crew Cab models, specifically for vehicles without factory-installed catalytic converters.
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Part #: 18980

The MagnaFlow Aluminized Custom Builder Series 18980 i's weight-optimized and engineered to enhance your diesel truck with the dyno-proven performance and powerful, resonant sound that we're famous for. Custom Builder Pipe Kit 18980 features durable, corrosion resistant aluminized steel construction and includes 4in. diameter mandrel bent pipes. Each component is produced using advanced CNC precision robotic manufacturing and backed by MagnaFlow's 1-year limited warranty. This emissions-legal downpipe-back kit utilizes a Clamp-On inlet connection and is designed to produce Aggressive exterior and Moderate interior sound levels with a Single Passenger Side Rear exit. Professional installation is recommended due to possible cutting, welding and fabrication required.

Features:

  • Layout, placement, orientation and exhaust note are yours to craft as you see fit
  • Features all components necessary to enable flexible installation options
  • Attention grabbing design thanks to an aggressive style

Magnaflow Aluminized Custom Builder Pipe Kit Diesel 4in. Downpipe-Back

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

Fitment Guaranteed

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

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Specifications

BrandMagnaflow
Part NumberM001 18980
5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold
(760) 282-4645 hello@motormia.co

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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