---
product_id: 46138085
title: "Cataclean Fuel & Exhaust System Cleaner – Pass Emissions Tests – Clear Check Engine Lights – Restores Catalytic Converters, DPF Filters and Cleans Fuel Systems, 5L (120009CAT)"
brand: "cataclean"
price: "152930 Ft"
currency: HUF
in_stock: true
reviews_count: 10
url: https://www.desertcart.hu/products/46138085-cataclean-fuel-and-exhaust-system-cleaner-pass-emissions-tests-clear
store_origin: HU
region: Hungary
---

# Improves fuel economy & engine power Clears common check engine codes 50% hydrocarbon emission reduction Cataclean Fuel & Exhaust System Cleaner – Pass Emissions Tests – Clear Check Engine Lights – Restores Catalytic Converters, DPF Filters and Cleans Fuel Systems, 5L (120009CAT)

**Brand:** cataclean
**Price:** 152930 Ft
**Availability:** ✅ In Stock

## Summary

> 🚗 Clean fuel, clear lights, and greener drives—your car’s new best friend!

## Quick Answers

- **What is this?** Cataclean Fuel & Exhaust System Cleaner – Pass Emissions Tests – Clear Check Engine Lights – Restores Catalytic Converters, DPF Filters and Cleans Fuel Systems, 5L (120009CAT) by cataclean
- **How much does it cost?** 152930 Ft with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hu](https://www.desertcart.hu/products/46138085-cataclean-fuel-and-exhaust-system-cleaner-pass-emissions-tests-clear)

## Best For

- cataclean enthusiasts

## Why This Product

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

## Key Features

- • **Simple, No-Fuss Application:** Just pour into your tank—no tools, no mess, 50-state legal.
- • **Boost Fuel Efficiency & Power:** Cleaner injectors mean more miles and a peppier ride.
- • **Clear Check Engine Lights Fast:** Target and erase those pesky error codes without a mechanic.
- • **Pass Emissions with Confidence:** Slash carbon buildup and breeze through smog tests effortlessly.
- • **Prolong Catalytic Converter Life:** Keep your converter running like new, saving costly replacements.

## Overview

Cataclean Fuel & Exhaust System Cleaner is a powerful 5L additive designed to reduce carbon buildup by up to 50%, clean fuel injectors and catalytic converters, and clear common check engine light codes. Safe for gasoline, diesel, and hybrid engines, it helps vehicles pass emissions tests, improve fuel economy, and extend catalytic converter lifespan with easy, no-mess application.

## Description

Buy Cataclean Fuel & Exhaust System Cleaner – Pass Emissions Tests – Clear Check Engine Lights – Restores Catalytic Converters, DPF Filters and Cleans Fuel Systems, 5L (120009CAT): Carburetor & Throttle Body Cleaners - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: This WORKS! Car ran sooo good after! - This WORKS! Car ran sooo good after! I used this product during a fill-up and it was simple to add no mess and no fuss. After a tank or two, I noticed smoother idling and emissions seemed cleaner. Cleanliness: Helped clear some buildup and soot over a few uses with speed. Leakage: No leaks during application pours cleanly. Durability: N/A (single-use additive) but bottle held up well. Product quality: Feels like a solid formula nothing spilled or stained. Longevity: Results seem to last a couple of tanks after use.
Review: Worked as advertised, took two bottles. - I used this on a Porsche Boxster with 55,000 miles. Got a “check engine” light, and the code was for the catalytic converter. Figured I had nothing to lose. Followed the directions to add to 1/4 tank of fuel, and the the code did not clear. Figured I would try another bottle. The code then cleared in about 10 miles. This was all over 1000 miles ago, the check engine light has come back on and there are no pending codes. I am sure this stuff won’t fix every catalytic unit. In Given the cost of a new catalytic unit, this is a bet worth taking.

## Features

- Pass Emissions Tests with Confidence: Cataclean is specifically formulated to reduce carbon build-up and clean vital components like catalytic converters, DPF filters and oxygen sensors, helping your vehicle meet stringent smog and emissions standards. Reduces hydrocarbon emissions on gas motors by up to 50%!
- Enhance Fuel Economy and Performance: Cataclean cleans fuel injectors and cylinder heads, leading to improved fuel combustion, better mileage, and restored engine power.
- Clear Check Engine Lights: By cleaning your car’s exhaust and fuel systems, Cataclean restores optimal performance and helps resolve common check engine light codes like P0420, P0430, P0171, P0174, P0300, and P0401, potentially saving you thousands on repairs.
- Maintain Catalytic Converter Efficiency: Regular use of Cataclean helps prevent carbon accumulation in your catalytic converter, ensuring it operates efficiently and prolongs its lifespan. ​
- Easy Application: Simply add Cataclean to your fuel tank as directed; no special tools or mechanical skills required, making it a convenient addition to your vehicle maintenance routine. Safe for use in gasoline, diesel and Hybrid engines. 50 state legal.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01JP2FSLY |
| Best Sellers Rank | #252 in Automotive ( See Top 100 in Automotive ) #2 in Fuel System Cleaners |
| Brand | Cataclean |
| Customer Reviews | 4.2 4.2 out of 5 stars (15,071) |
| Date First Available | December 18, 2016 |
| Exterior | Machined |
| Item Weight | 9.7 pounds |
| Item model number | 120009CAT |
| Manufacturer | CataClean |
| Manufacturer Part Number | 120009CAT |
| Model | 120009CAT |

## Product Details

- **Brand:** Cataclean
- **Contains Liquid Contents:** Yes
- **Global Trade Identification Number:** 00090127741016
- **Number of Items:** 1
- **Unit Count:** 1.0 Count

## Images

![Cataclean Fuel & Exhaust System Cleaner – Pass Emissions Tests – Clear Check Engine Lights – Restores Catalytic Converters, DPF Filters and Cleans Fuel Systems, 5L (120009CAT) - Image 1](https://m.media-amazon.com/images/I/71ov9csnb-L.jpg)
![Cataclean Fuel & Exhaust System Cleaner – Pass Emissions Tests – Clear Check Engine Lights – Restores Catalytic Converters, DPF Filters and Cleans Fuel Systems, 5L (120009CAT) - Image 2](https://m.media-amazon.com/images/I/819JbN7I39L.jpg)
![Cataclean Fuel & Exhaust System Cleaner – Pass Emissions Tests – Clear Check Engine Lights – Restores Catalytic Converters, DPF Filters and Cleans Fuel Systems, 5L (120009CAT) - Image 3](https://m.media-amazon.com/images/I/81ZBGIY2QyL.jpg)
![Cataclean Fuel & Exhaust System Cleaner – Pass Emissions Tests – Clear Check Engine Lights – Restores Catalytic Converters, DPF Filters and Cleans Fuel Systems, 5L (120009CAT) - Image 4](https://m.media-amazon.com/images/I/81LEZg9lOwL.jpg)
![Cataclean Fuel & Exhaust System Cleaner – Pass Emissions Tests – Clear Check Engine Lights – Restores Catalytic Converters, DPF Filters and Cleans Fuel Systems, 5L (120009CAT) - Image 5](https://m.media-amazon.com/images/I/81epQd1aCTL.jpg)

## Available Options

This product comes in different **Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ This WORKS! Car ran sooo good after!
*by K***H on February 7, 2026*

This WORKS! Car ran sooo good after! I used this product during a fill-up and it was simple to add no mess and no fuss. After a tank or two, I noticed smoother idling and emissions seemed cleaner. Cleanliness: Helped clear some buildup and soot over a few uses with speed. Leakage: No leaks during application pours cleanly. Durability: N/A (single-use additive) but bottle held up well. Product quality: Feels like a solid formula nothing spilled or stained. Longevity: Results seem to last a couple of tanks after use.

### ⭐⭐⭐⭐⭐ Worked as advertised, took two bottles.
*by E***H on December 11, 2025*

I used this on a Porsche Boxster with 55,000 miles. Got a “check engine” light, and the code was for the catalytic converter. Figured I had nothing to lose. Followed the directions to add to 1/4 tank of fuel, and the the code did not clear. Figured I would try another bottle. The code then cleared in about 10 miles. This was all over 1000 miles ago, the check engine light has come back on and there are no pending codes. I am sure this stuff won’t fix every catalytic unit. In Given the cost of a new catalytic unit, this is a bet worth taking.

### ⭐⭐⭐⭐ Worked, but has issues.
*by L***S on March 3, 2016*

Here's the quick summary: Yes I used this and yes my car passed smog test.... but I would try lots of other things before using Cataclean again. My vehicle is a 2004 Toyota Sienna with 137,000 miles. Check engine light (CEL) has been on for two years now. The CEL is on due to the following codes P0420 - Cat Bank 1, P0430 - Cat Bank 2 , P2238 - AF Sensor Circuit. This year we got the registration renewal and were required to get a smog certificate. Since you can't pass smog test with CEL on, we took the van to the dealer to see about getting it the CEL fixed. The dealer recommended replacing both catalytic converters the A/F sensor and calibrate ECM. All for a cost of over $2,800. So instead of spending the $2,800 I figured it was worth it to give Cataclean a try. I followed the directions and added the entire contents to about 1/4 tank of gas. Then immediately drove the van until it was empty. The van was not completely empty, but the yellow fuel warning light did come on and the gauge was on E. At this point I filled up the tank with premium gasoline. After filling it I immediately drove the van for about 40 miles. I was expecting the CEL to turn off but it did not. At this point my story gets less normal than most I suppose. My wife drives this van most times and I have another car. It just so happened that my wife was sick with a bad case of the flu and she did not drive the Sienna for more than 1 week. So the Sienna sat with nearly a full tank of fuel and whatever was left of the Cataclean for 1 week. After 1 week of sitting in the garage, I decided it was time to try to drive the van and see if the CEL would turn off. This is where it gets very weird and discouraging and expensive. I pulled out of the garage and the van barely ran at all. It felt like only half of the engine was running. The engine had very little power and to make matters worse the CEL was now flashing ON and OFF. I pulled over and did some quick research on my phone and found out that a flashing CEL is bad news. I spent the next 4 hours "babying" my car. I would drive it for a little bit and the CEL would flash. So I would pull over and let it idle next to the curb. When the engine was simply idling the CEL would not flash. I did this for hours and hours and the CEL flashing got less and less prevalent. Finally the CEL stopped flashing after about 4 hours of driving and idling. If this does happen to you, you need to be very careful. Driving with a flashing CEL could lead to really expensive damage and even your car catching on fire. After that long evening of babying my car, the CEL never flashed again. But the car did not run correctly after that either. The car was rough at idle and vibrated a lot while it ran. And now, my car had a new code P0354. I took it to a mechanic and he replaced the #6 ignition coil and spark plug and cleaned the fuel injection system. This made the car run smooth and cleared the P0354 code. Replacing the ignition coil spark plug and cleaning the fuel injection system cost $510. I had a lot of expensive problems after I put in the Cataclean (see above). These problems could have been a coincidence and I could have had those problems without the Cataclean. After all, it's an old vehicle with lots of problems. Anything is possible. But I don't think I will be using Cataclean again. I cleared all codes and tried to run the monitors. For those of you not familiar, there are "monitors" which run in software on your vehicle. These monitors must be run and passed with no codes before you can have your car smogged. If the monitors generate codes, then the CEL turns ON. If you clear the codes, your CEL does go off, but your monitors are now "imcomplete" in your cars OBD memory. You cannot pass smog with incomplete monitors (actually the number of incomplete monitors allowed to pass smog varies from state to state so check with your motor vehicle department). You can find the rules for California here: [...] So now my car runs smoothly, the Cataclean has run through the emission system and the CEL is off. I have two incomplete monitors. One of the incomplete monitors is the Catalytic Converter monitor. So I then drive the van around town running some errands. Mostly stop and go, but some highway driving. After about 50 miles the CEL turns ON and generates code P0420... very discouraging. But I did not give up. I cleared the P0420 code and decided to try nothing but highway driving at moderate speed. Just a hunch I guess. So I got on the freeway and drove. Entirely freeway driving at very moderate speed. I got in the slow lane with the trucks and probably averaged 55 MPH and for it's worth I turned my Air Conditioning off. I did this for about 75 miles. I kept checking the scanner to see if the monitor for the Catalytic Converter had run, but it said incomplete. I must have checked the scanner 30 times to see if the monitor had run. Then it happened, the Catalytic Converter monitor ran and the status went to OK with no code. As soon as the monitor ran with no code I found the first smog station I could find and got a smog certificate. YEAH!!!! In order to do all of this I needed an OBDII scanner with me in the car to check monitors, read codes and clear codes. I used a very inexpensive OBDII scanner that I bought at Wal-Mart for $21. I think some of the inexpensive models offered on Amazon would work as well. You don't need an expensive scanner to do this. The main thing for checking monitors is a feature called "I/M Readiness Status"-- make sure your scanner can do this function. So did the Cataclean help pass smog? Did Cataclean cause the damage to the ignition coil? Did not driving it for a week in the middle of this process cause a problem? .... I don't know. If I were to ever need to use Cataclean again, I would drive the vehicle... a lot and try to get it through the system as quickly as I could. Hopefully, I won't need to use it again.

## Frequently Bought Together

- Cataclean - Gasoline - 5L (120009CAT)
- Cataclean - (2) Bottle 16Oz. Fuel/Exhaust (120019)
- Chevron 65740-CASE Techron Concentrate Plus Fuel System Cleaner - 20 oz., (Pack of 6)

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*Product available on Desertcart Hungary*
*Store origin: HU*
*Last updated: 2026-03-08*