---
product_id: 40685187
title: "Dorman 03423 Exhaust Manifold Bolt Kit Compatible with Select Models"
brand: "dorman"
price: "$34.47"
currency: USD
in_stock: true
reviews_count: 13
category: "Dorman"
url: https://www.desertcart.ec/products/40685187-dorman-03423-exhaust-manifold-bolt-kit-compatible-with-select-models
store_origin: EC
region: Ecuador
---

# M10 Thread Size Grade 10.9 Hardness 500 MPa Shear Strength Dorman 03423 Exhaust Manifold Bolt Kit Compatible with Select Models

**Brand:** dorman
**Price:** $34.47
**Availability:** ✅ In Stock

## Summary

> 🔧 Upgrade your ride with bolts that mean business!

## Quick Answers

- **What is this?** Dorman 03423 Exhaust Manifold Bolt Kit Compatible with Select Models by dorman
- **How much does it cost?** $34.47 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/40685187-dorman-03423-exhaust-manifold-bolt-kit-compatible-with-select-models)

## Best For

- dorman enthusiasts

## Why This Product

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

## Key Features

- • **Precision Fit, Zero Guesswork:** Direct replacement engineered to match factory specs for seamless installation.
- • **Fitment Verified, No Surprises:** Use the garage tool to confirm exact vehicle compatibility before purchase.
- • **Powerful Performance Under Pressure:** Withstands up to 500 MPa shear strength, ensuring your exhaust stays secure.
- • **Built to Last, Drive with Confidence:** Crafted from premium alloy steel with Grade 10.9 hardness for superior durability.
- • **Trusted by Experts, Backed by Legacy:** Supported by over a century of automotive expertise and US-based quality assurance.

## Overview

The Dorman 03423 Exhaust Manifold Bolt Kit offers a high-strength, direct-fit replacement bolt made from durable alloy steel with Grade 10.9 hardness and 500 MPa shear strength. Designed for select BMW, Subaru, Toyota, Lexus, and other models, it ensures reliable exhaust system performance backed by over 100 years of automotive expertise. Confirm fitment easily with the online garage tool for a hassle-free upgrade.

## Description

This exhaust bolt is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance. This part is compatible with the following vehicles. Before purchasing, enter your vehicle trim in the garage tool to confirm fitment. [BMW 323Ci: 2000] - [BMW 323i: 1999, 2000] - [BMW 323iC: 1999] - [BMW 323is: 1999] - [BMW 328Ci: 2000] - [BMW 328i: 1999, 2000] - [BMW 328iC: 1999] - [BMW 328is: 1999] - [BMW 528i: 1999, 2000] - [BMW 528it: 1999, 2000] - [BMW Z3: 1999, 2000] - [Chevrolet Nova: 1988] - [Geo Prizm: 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997] - [Lexus ES300: 2002, 2003] - [Lexus ES330: 2004, 2005, 2006] - [Pontiac Vibe: 2009, 2010] - [Scion tC: 2007, 2008, 2009, 2010] - [Subaru Baja: 2004, 2005, 2006] - [Subaru Forester: 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013] - [Subaru Impreza: 1994, 1995, 1996, 1997, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010] - [Subaru Legacy: 1991, 1992, 1993, 1994, 2005, 2006, 2007, 2008, 2009] - [Subaru Outback: 2005, 2006, 2007, 2008, 2009] - [Subaru WRX STI: 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021] - [Subaru WRX: 2012, 2013, 2014, 2015, 2016] - [Toyota 4Runner: 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995] - [Toyota Camry: 1992, 1993, 2000, 2001, 2002, 2003, 2004, 2005, 2006] - [Toyota Celica: 1985, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997] - [Toyota Corolla: 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2009, 2010, 2011, 2012, 2013] - [Toyota Matrix: 2009, 2010, 2011, 2012, 2013] - [Toyota Paseo: 1992, 1993, 1994, 1995] - [Toyota Pickup: 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995] - [Toyota Solara: 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008]

Review: Exhaust manifold bolts - Work on 2003 Honda Accord when installing the catalytic converter . Well made and fit perfectly
Review: used when replacing a catback exhaust - bought this kit to use when i replaced my oem catback exhaust because i has to cut and drill out old rusted bolts. these worked as intended no issues

## Features

- Direct replacement - this exhaust bolt matches the fit and function of the factory part on specified years, makes and models
- Ideal solution - this bolt is a reliable replacement for an original part that is missing or has failed due to fatigue
- Durable construction - this part is made from quality materials to ensure reliable performance and long service life
- Trustworthy quality - backed by team of product experts in the United States and more than a century of automotive experience
- Ensure fit - Input your vehicle into the garage tool and check Confirmed Fit bar at the top of the page. If there is an “i” in a blue circle, additional verification is needed. Please hover over the "i" to verify fitment notes match your vehicle.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0181H22YK |
| Brand | Dorman |
| Color | Yellow |
| Date First Available | November 15, 2015 |
| Exterior Finish | Ready To Paint If Needed |
| Fastener Type | Hexagon Bolt |
| Global Trade Identification Number | 00037495489300 |
| Head Style | Flat |
| Head Type | Hex |
| Item Diameter | 1E+1 Millimeters |
| Item Hardness | Grade 10.9 |
| Item Weight | 2.56 ounces |
| Item model number | 03423 |
| Manufacturer | Dorman Products |
| Manufacturer Grade | Regular |
| Material | Alloy Steel |
| Maximum Shear Strength | 500 MPa |
| Number of Pieces | 1 |
| Size | 1 Count (Pack of 1) |
| Thread Size | M10 |
| Thread Style | Right Hand |
| UPC | 037495489300 |

## Product Details

- **Exterior Finish:** Ready To Paint If Needed
- **Head Style:** Flat
- **Manufacturer Grade:** Regular
- **Material:** Alloy Steel
- **Thread Size:** M10

## Images

![Dorman 03423 Exhaust Manifold Bolt Kit Compatible with Select Models - Image 1](https://m.media-amazon.com/images/I/41y4x12KB+L.jpg)
![Dorman 03423 Exhaust Manifold Bolt Kit Compatible with Select Models - Image 2](https://m.media-amazon.com/images/I/51TAJg1e9FL.jpg)
![Dorman 03423 Exhaust Manifold Bolt Kit Compatible with Select Models - Image 3](https://m.media-amazon.com/images/I/81VRrDBR4vL.jpg)

## Questions & Answers

**Q: How long are these bolts?**
A: 34.60mm from the under head to the tip.

**Q: what size socket would I need for this bolt? I'm looking for a 14mm or less size head due to a recessed area it needs to screw into.**
A: These bolts do have a 14mm hex

**Q: what is the torque spec for this ?**
A: I used 30-41 fl/lbs for the exhaust connections on my catalytic converter (Miata factory specs)

**Q: Do you need to add a locking washer?**
A: I'd say no, they have stayed put on my car for about a year now without locking washers.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Exhaust manifold bolts
*by A***E on December 31, 2023*

Work on 2003 Honda Accord when installing the catalytic converter . Well made and fit perfectly

### ⭐⭐⭐⭐⭐ used when replacing a catback exhaust
*by A***L on January 18, 2026*

bought this kit to use when i replaced my oem catback exhaust because i has to cut and drill out old rusted bolts. these worked as intended no issues

### ⭐⭐⭐⭐⭐ Good fit
*by J***N on December 9, 2024*

Quality products

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*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-03-07*