Exhaust› Exhaust Pipes, Systems and Components

Magnaflow

Custom Builder Series 4-Inch Turbo-Back Exhaust

$1,286.00

SKU: MAG-17878

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Magnaflow Custom Builder Series is a turbo-back exhaust system designed for 1999-2003 Ford F-250 and F-350 models with the 7.3L engine, specifically for Extended and Crew Cabs. This system features a 4-inch diameter main piping and a single side rear exit configuration. Constructed from premium stainless steel, it offers durability and a superior sound and driving experience.
Show original supplier description
The Magnaflow Custom Builder Series Turbo-Back Exhaust System is engineered for 1999-2003 Ford F-250 and F-350 trucks equipped with the 7.3L diesel engine, specifically for Extended and Crew Cab configurations. This kit provides a foundation for a complete exhaust system, offering maximum customization options. It features 4-inch diameter main piping and a single side rear exit. Constructed from premium stainless steel, this system is built for durability and resistance to corrosion. MagnaFlow's commitment to engineering and manufacturing excellence ensures a superior sound and driving experience. This turbo-back system requires the addition of a converter, muffler, and tip tailored to your specific application to complete the exhaust setup. The inlet connection type is clamp-on.

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

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Specifications

BrandMagnaflow
Part NumberMAG-17878
CategoryExhaust
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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