Exhaust› Headers, Manifolds and Components

Doug Thorley Headers

Tri-Y Long Tube Headers

$1,095.00

SKU: THY-324Y-C

In Stock
In Stock
Ships by Jul 29
Free Shipping
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Doug Thorley Headers THY-324Y-C is a pair of long tube Tri-Y headers designed for LS series motor swaps in 1967-1972 GM C10 pickup trucks. These headers are constructed from 14-gauge steel with 3/8" thick flanges and feature a silver ceramic coating to reduce under-hood temperatures and protect against environmental elements.

Adapters are included, though they must be welded to the exhaust system. These headers are 100% American-made and come with a limited lifetime warranty to the original purchaser.

Fitment

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

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Specifications

BrandDoug Thorley Headers
Part NumberTHY-324Y-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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