Exhaust› Headers, Manifolds and Components

American Racing

Stainless Steel Exhaust Headers with Catalytic Converters

$2,073.35

SKU: ARH-MTC5-11178300LSNC

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

Constructed entirely from 304 stainless steel, it features 3/8" thick laser-cut flanges for a secure seal. This system includes hand-ported TIG welded inlets and optimized primary tube routing for improved fit and performance. The merge collectors are equipped with scavenger spikes, and catted versions utilize durable 200-cell metallic substrate catalytic converters.
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It features robust 3/8" thick laser-cut flanges designed to prevent warping and ensure a leak-free seal. The system boasts hand-ported TIG welded inlets and optimized primary tube routing, contributing to superior fitment and enhanced performance. The merge collectors are equipped with scavenger spikes to maximize exhaust scavenging. For those opting for the catted version, it includes 200-cell metallic substrate catalytic converters known for their extreme durability. Available with primary tube sizes of 1-3/4", 1-7/8", or 2", and a choice between a 3" X-Pipe or a 3" H-Pipe for a classic muscle car sound, this system offers customization to suit your needs. It is important to note that all ARH products are manufactured exclusively for racing purposes. Installation on any vehicle eliminates its legal use on public roads and highways, potentially subject to fines and liability under the Clean Air Act. Additionally, be aware of California Proposition 65 warnings regarding cancer and reproductive harm. This specific system is designed for the 2011-2014 Ford Mustang GT 5.0L Coyote engine.

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

BrandAmerican Racing
Part NumberARH-MTC5-11178300LSNC
CategoryExhaust
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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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