Exhaust› Headers, Manifolds and Components

Doug Thorley Headers

Shorty Header with Ceramic-Thermal Coating

$728.79

SKU: THY-517-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

The Doug Thorley THY-517-C Shortie Headers are engineered for the 2012-2015 Toyota Tacoma V6 with the cold start air injection system. These headers are built from robust 14-gauge steel, ensuring excellent longevity and performance. Designed for easy installation, these shorty headers maintain emissions mounting positions for compliance with the strictest smog standards, making them 50-state smog legal for many applications. They come with O2 sensor bosses and a custom gasket for a leak-free fit and optimal performance. The shorty design is ideal for vehicles with limited space under the hood. Doug Thorley has a legacy of over 50 years in performance upgrades.

MIA's Description

The Doug Thorley THY-517-C is a shorty header designed for 2012-2015 Toyota Tacomas. Constructed from 14-gauge steel, it features a Ceramic-Thermal coating for heat resistance and durability. This header is designed to maintain emissions mounting positions and is 50-state smog legal for many applications. It includes O2 sensor bosses and a custom gasket for a leak-free fit.

Fitment

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Specifications

BrandDoug Thorley Headers
Part NumberTHY-517-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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