---
product_id: 9167268
title: "Doug Thorley Headers THY-309-S-C Short Block Exhaust Header with EGR Fitting for GM Truck/SUV"
brand: "doug thorley headers"
price: "S$1244"
currency: SGD
in_stock: true
reviews_count: 1
url: https://www.desertcart.sg/products/9167268-doug-thorley-headers-thy-309-s-c-short-block-exhaust
store_origin: SG
region: Singapore
---

# CARB approved 14GA tubing Made in the USA Doug Thorley Headers THY-309-S-C Short Block Exhaust Header with EGR Fitting for GM Truck/SUV

**Brand:** doug thorley headers
**Price:** S$1244
**Availability:** ✅ In Stock

## Summary

> 🚗 Elevate Your Ride with Doug Thorley Headers!

## Quick Answers

- **What is this?** Doug Thorley Headers THY-309-S-C Short Block Exhaust Header with EGR Fitting for GM Truck/SUV by doug thorley headers
- **How much does it cost?** S$1244 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/9167268-doug-thorley-headers-thy-309-s-c-short-block-exhaust)

## Best For

- doug thorley headers enthusiasts

## Why This Product

- Trusted doug thorley headers brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Sleek & Stylish:** Ceramic coated inside and out for a polished look that enhances your vehicle's aesthetic.
- • **Lifetime Assurance:** Backed by a limited lifetime warranty, giving you peace of mind with every drive.
- • **Unmatched Durability:** Crafted with extra thick 14GA tubing and robust 3/8 inch flanges for long-lasting performance.
- • **Effortless Installation:** Comes complete with all necessary gaskets and installation hardware, making setup a breeze.
- • **Eco-Friendly Performance:** CARB approved and 50 state smog legal, ensuring compliance without sacrificing power.

## Overview

The Doug Thorley Headers THY-309-S-C is a high-performance exhaust header designed specifically for GM trucks and SUVs. Made in the USA, it features durable 14GA tubing and 3/8 inch thick flanges, ensuring longevity and reliability. The ceramic coating enhances both performance and aesthetics, while the kit includes all necessary gaskets and installation hardware. With CARB approval, this product is smog legal in all 50 states, making it an eco-friendly choice for performance enthusiasts.

## Description

Doug Thorley Headers THY-309-S-C Short Block Exhaust Header with EGR Fitting for GM Truck/SUV

## Features

- Made in the USA with limited lifetime warranty
- Extra thick 14GA tubing and 3/8 inch thick flanges
- Ceramic coated inside and out
- Kit includes all required gaskets and/or installation hardware
- CARB approved, 50 state smog legal

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Doug Thorley Headers |
| Brand | Doug Thorley Headers |
| Model | THY-309-S-C |
| Item Weight | 22.3 pounds |
| Product Dimensions | 40 x 22 x 10 inches |
| Country of Origin | USA |
| Item model number | THY-309-S-C |
| Manufacturer Part Number | THY-309-S-C |

## Images

![Doug Thorley Headers THY-309-S-C Short Block Exhaust Header with EGR Fitting for GM Truck/SUV - Image 1](https://m.media-amazon.com/images/I/61OrzL5-+fL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Great Product and Straight Forward Installation
  

*by R***D on Reviewed in the United States on May 7, 2017*

High Quality Product. Installed on 2001 Chevy Tahoe with 5.3L V8. Installation is straight forward. Installation did require minor bend modification to the heat shield on the passenger side, so it didn't touch the Header Tube. Doug Thorley Header performs well and am very pleased with their product. Highly recommend this product.

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**Shop now:** [https://www.desertcart.sg/products/9167268-doug-thorley-headers-thy-309-s-c-short-block-exhaust](https://www.desertcart.sg/products/9167268-doug-thorley-headers-thy-309-s-c-short-block-exhaust)

---

*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-06-20*