---
product_id: 181178000
title: "ATP Automotive Graywerks 101342 Exhaust Manifold/Catalytic Converter"
brand: "atp automotive"
price: "¥74183"
currency: JPY
in_stock: true
reviews_count: 2
category: "Atp Automotive"
url: https://www.desertcart.jp/products/181178000-atp-automotive-graywerks-101342-exhaust-manifold-catalytic-converter
store_origin: JP
region: Japan
---

# High-grade steel & precious metals resist fatigue Direct OE fit for seamless install Includes all gaskets & hardware for turnkey replacement ATP Automotive Graywerks 101342 Exhaust Manifold/Catalytic Converter

**Brand:** atp automotive
**Price:** ¥74183
**Availability:** ✅ In Stock

## Summary

> 🚗 Upgrade your ride with precision-engineered power and lasting performance!

## Quick Answers

- **What is this?** ATP Automotive Graywerks 101342 Exhaust Manifold/Catalytic Converter by atp automotive
- **How much does it cost?** ¥74183 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/181178000-atp-automotive-graywerks-101342-exhaust-manifold-catalytic-converter)

## Best For

- atp automotive enthusiasts

## Why This Product

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

## Key Features

- • **Backed by Confidence:** Limited 5-year or 50,000-mile warranty ensures peace of mind for your investment.
- • **Precision OE Alignment:** Engineered as a direct replacement to ensure perfect fit and optimal exhaust flow, eliminating guesswork during installation.
- • **Complete Installation Kit:** Comes with upper & lower flange gaskets, hardware, heat shields, and plugs—everything you need for a hassle-free upgrade.
- • **Durable Premium Materials:** Crafted from high-grade steel and precious metals to withstand heat and corrosion, promising long-lasting catalytic performance.
- • **Emission Compliance Guaranteed:** Designed to meet OEM ECU monitoring standards, preventing check engine lights and restoring factory emission levels.

## Overview

The ATP Automotive Graywerks 101342 Exhaust Manifold/Catalytic Converter is a direct OE replacement part designed for exact fit and reliable emission control. Constructed from high-grade steel and precious metals, it resists fatigue and corrosion while restoring proper catalytic function. The product includes all necessary gaskets, hardware, heat shields, and plugs for a complete installation, and is backed by a 5-year/50,000-mile warranty. Ideal for professionals seeking a dependable, emission-compliant exhaust solution.

## Description

ATP Graywerks Exhaust Manifold-Converters provide a tested and proven solution to repair vehicles with increased emissions or check engine lights due to catalytic failures. All parts are designed and tested as a direct, exact fit replacement. This includes rigorous application testing to ensure the replacement part meets all demands by the vehicle’s On-Board Diagnostic computer. ATP’s Manifold-Converters feature high grade steel and precious metals to ensure a long lasting replacement. This is backed by a 5 Year or 50,000 Mile Warranty.

Review: Perfect Fit - This item was delivered well packaged and complete It was very well made and an exact fit for my car I was impressed that it came with everything I needed to install including all gaskets, nuts and bolts. I used our fleet service department to install this and the manager was even impressed with the product so he will be checking this company in the future for products
Review: Stay away! Bad product! - In the picture it looks the same as the OEM. It comes with the upper and lower gaskets and most of the bolts and nuts. Seems like a good deal. The good news is the main things aligned - the top 5 holes and the bottom two where in the right places. So you can connect this cat to the engine block and to the exhaust pipe. The bad news is most other things don't align. I had to drill holes in all 3 heat shields to me able to attach them. The bottom two pieces didn't align well, so it looks crooked now. The main problem was that the main support bracket didn't align properly. If you just try to attach this bracket to the cat itself ( there are two bolts) you'll have to bend the bracket. Once you managed that, if you try the cat on the engine, this bracket is 1/4" to the left and 1/4" away from the hole in the engine block where it's supposed to be bolted. So I had to drill and file a new hole in the bracket. A the problem with that is it's 1/4" thick steel and the hole is close to the original hole, so you can't use the drill, but have to file it. Second big problem was that they included the 3 pins and the thread step on them didn't match the cat itself and the nuts they've included. I bought a set of pins and nuts separately. Without it I'd have drive to Home depot and try to find some matching bolts. Those 3 pins are very important. I had to cut the old pins to remove my old cat from the engine. If I didn't order these extra pins, I wouldn't be able to finish installing this cat. Third thing is they put the lower gasket, which is made of what looks like graphite, in the plastic bag with all the bolts and threw in the box with the cat. The gasket came all damaged because of contact with the bolts. I was glad I also ordered the extra gasket. Forth, the car is working now, so it's drivable, but the cat smokes. It's not the exhaust smoke, but like something is burning. I think the cat was covered with some oil or it's some solder remnants or something inside it, but it smokes and stinks. I'm not sure if it would be the same with any other replacement cat. Replacing a cat is not an easy job, but it shouldn't be that hard. The lower part of the cat, where it connects to the exhaust pipe seems cast iron. The two hole, where the pins go, match the location of the exhaust pipe holes, but the hole for the left bracket is in the wrong place. This piece is cast iron, so it's not a welder's error. The whole cat seemed to be hand welded. Maybe it's the only way to do it, but you can't expect a perfect match in this case. This cat is sold at Autozone for 500 and change. I'm guessing, they're selling the items that failed quality control on the desertcart. That is fine as long as it's clearly stated in the item description. desertcart's recourse would be, fine, return this item for a full refund. Great! But think of this: it's Sunday, you took the old cat out and can't put it back in, because you had to cut the pins and tomorrow you have to go to work. And on Tuesday, when a replacement part can arrive, there's a snow storm in the forecast. UPDATE: It's been about a year since I've installed it. Some time after the installation the car developed a new sound. It's similar to a cow bell. You can hear it as the car starts moving from a standstill. Recently it developed an exhaust manifold gasket leak which caused it to loose power to the point where driving over 25mph became next to impossible. When replacing the gasket I've removed the manifold and found that "the media" or whatever you call the contents of the cat converter is freely moving inside the converter. It is what was making the cow bell sound. Not only it's moving, it doesn't seem to be attached to anything. The tip of it was sticking out of the bottom flange looking lake a bee hive. Apart from the sound, I'd imagine this would shorten the lifespan of the cat converter because the media is fragile and is constantly beating against the walls of the cat. I can't imagine it to be the intended design. In the original cat converter I saw a mesh inside when looking through the bottom flange. I think they forgot to install the mesh. Bottom line is do yourself a favor and buy a better cat.

## Features

- Engineered as direct OE replacement ensuring manifold will line up and flow like the original unit
- High grade steel and precious metals resist fatigue and provide long lasting reliable catalyst performance
- Developed based on OEM ECU monitors eliminating catalytic converter check engine light and restoring correct emission levels
- Upper and lower flange gaskets along with lower flange hardware are included. (Heat shields and plugs are included where needed.)
- Limited 5 Year Warranty

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004A6PLCC |
| Best Sellers Rank | #3,860,543 in Automotive ( See Top 100 in Automotive ) #2,139 in Automotive Replacement Exhaust Manifolds |
| Brand | atp automotive |
| Customer Reviews | 4.2 4.2 out of 5 stars (4) |
| Date First Available | October 31, 2010 |
| Item Weight | 15.05 pounds |
| Item model number | 101342 |
| Manufacturer | ATP |
| Manufacturer Part Number | 101342 |
| Product Dimensions | 21.7 x 19 x 7.9 inches |

## Images

![ATP Automotive Graywerks 101342 Exhaust Manifold/Catalytic Converter - Image 1](https://m.media-amazon.com/images/I/51BRRb7nyQL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect Fit
*by L***S on March 5, 2013*

This item was delivered well packaged and complete It was very well made and an exact fit for my car I was impressed that it came with everything I needed to install including all gaskets, nuts and bolts. I used our fleet service department to install this and the manager was even impressed with the product so he will be checking this company in the future for products

### ⭐ Stay away! Bad product!
*by P***S on March 24, 2014*

In the picture it looks the same as the OEM. It comes with the upper and lower gaskets and most of the bolts and nuts. Seems like a good deal. The good news is the main things aligned - the top 5 holes and the bottom two where in the right places. So you can connect this cat to the engine block and to the exhaust pipe. The bad news is most other things don't align. I had to drill holes in all 3 heat shields to me able to attach them. The bottom two pieces didn't align well, so it looks crooked now. The main problem was that the main support bracket didn't align properly. If you just try to attach this bracket to the cat itself ( there are two bolts) you'll have to bend the bracket. Once you managed that, if you try the cat on the engine, this bracket is 1/4" to the left and 1/4" away from the hole in the engine block where it's supposed to be bolted. So I had to drill and file a new hole in the bracket. A the problem with that is it's 1/4" thick steel and the hole is close to the original hole, so you can't use the drill, but have to file it. Second big problem was that they included the 3 pins and the thread step on them didn't match the cat itself and the nuts they've included. I bought a set of pins and nuts separately. Without it I'd have drive to Home depot and try to find some matching bolts. Those 3 pins are very important. I had to cut the old pins to remove my old cat from the engine. If I didn't order these extra pins, I wouldn't be able to finish installing this cat. Third thing is they put the lower gasket, which is made of what looks like graphite, in the plastic bag with all the bolts and threw in the box with the cat. The gasket came all damaged because of contact with the bolts. I was glad I also ordered the extra gasket. Forth, the car is working now, so it's drivable, but the cat smokes. It's not the exhaust smoke, but like something is burning. I think the cat was covered with some oil or it's some solder remnants or something inside it, but it smokes and stinks. I'm not sure if it would be the same with any other replacement cat. Replacing a cat is not an easy job, but it shouldn't be that hard. The lower part of the cat, where it connects to the exhaust pipe seems cast iron. The two hole, where the pins go, match the location of the exhaust pipe holes, but the hole for the left bracket is in the wrong place. This piece is cast iron, so it's not a welder's error. The whole cat seemed to be hand welded. Maybe it's the only way to do it, but you can't expect a perfect match in this case. This cat is sold at Autozone for 500 and change. I'm guessing, they're selling the items that failed quality control on the Amazon. That is fine as long as it's clearly stated in the item description. Amazon's recourse would be, fine, return this item for a full refund. Great! But think of this: it's Sunday, you took the old cat out and can't put it back in, because you had to cut the pins and tomorrow you have to go to work. And on Tuesday, when a replacement part can arrive, there's a snow storm in the forecast. UPDATE: It's been about a year since I've installed it. Some time after the installation the car developed a new sound. It's similar to a cow bell. You can hear it as the car starts moving from a standstill. Recently it developed an exhaust manifold gasket leak which caused it to loose power to the point where driving over 25mph became next to impossible. When replacing the gasket I've removed the manifold and found that "the media" or whatever you call the contents of the cat converter is freely moving inside the converter. It is what was making the cow bell sound. Not only it's moving, it doesn't seem to be attached to anything. The tip of it was sticking out of the bottom flange looking lake a bee hive. Apart from the sound, I'd imagine this would shorten the lifespan of the cat converter because the media is fragile and is constantly beating against the walls of the cat. I can't imagine it to be the intended design. In the original cat converter I saw a mesh inside when looking through the bottom flange. I think they forgot to install the mesh. Bottom line is do yourself a favor and buy a better cat.

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.jp/products/181178000-atp-automotive-graywerks-101342-exhaust-manifold-catalytic-converter](https://www.desertcart.jp/products/181178000-atp-automotive-graywerks-101342-exhaust-manifold-catalytic-converter)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-11-08*