Doug Thorley

THY-324Y-C Tri-Y Headers with Silver Ceramic Coating

$1,085.00

SKU: 324-C

In Stock
In Stock
Ships by Aug 31
Free Shipping over $200
$100 Minimum Order
30 Days Return

Description

The Doug Thorley THY-324Y-C headers are a performance upgrade designed to outflow stock exhaust manifolds and maximize power across the entire RPM range, making them ideal for street use. Constructed from durable 14-gauge steel tubing with robust 3/8" thick flanges, these long tube Tri-Y (4-2-1) headers are finished with a silver ceramic coating that helps dissipate heat and protects the exhaust components from corrosion. Each pair of headers is 100% American-made and includes necessary gaskets and adapters for installation. However, a manual transmission may require a cable or hydraulic clutch linkage. Additionally, these headers are specifically designed for Coil Spring front suspension and will not fit Heavy Duty, Big 10 Chassis, or Heavy Half models. Backed by over 50 years of engineering expertise, Doug Thorley Headers are built to last and come with a Limited Lifetime Warranty to the original purchaser. Installing these headers is intended to unlock your vehicle's true power potential.

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

BrandDoug Thorley
Part Number324-C
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.

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