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Exhaust› Headers, Manifolds and Components

Doug Thorley Headers

Tri-Y Long Tube Headers, 351W Swap, Silver Ceramic

$1,162.00 $1,092.00 Save $70.00

SKU: THY-288Y-C

In Stock
In Stock
Ships by Aug 4
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30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

Designed specifically for 1964-1966 Ford Mustangs equipped with a 351W motor swap and an automatic transmission, these headers are crafted from durable 14-gauge steel tubing with robust 3/8" thick flanges. The silver ceramic coating not only provides a sleek finish but also helps reduce under-hood temperatures and offers environmental protection. These headers include necessary adapters and gaskets for installation, though they require welding to the exhaust system. A Y-pipe and motor mounts are sold separately. Doug Thorley Headers backs this product with a limited lifetime warranty to the original purchaser and highlights that they are 100% American-made. Installation of these headers is intended to unlock the vehicle's true power potential.

MIA's Description

The Doug Thorley Headers THY-288Y-C is a pair of long tube Tri-Y headers designed for 1964-1966 Ford Mustang models with a 351W motor swap. These headers are constructed from industry-leading 14-gauge steel tubing with 3/8" thick flanges and feature a silver ceramic coating to reduce under-hood temperatures and protect against the environment. Adapters and gaskets are included, but a Y-pipe and motor mounts are not.

Fitment

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Specifications

BrandDoug Thorley Headers
Part NumberTHY-288Y-C
CategoryExhaust

Buy with Confidence

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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