10 Best exhaust cleaners of 2025

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Best Choice

1

Cataclean
Cataclean Fuel & Exhaust System Cleaner – Pass Emissions Tests – Clear Check Engine Lights – Restores Catalytic Converters, DPF Filters and Cleans Fuel Systems, 16oz - Pack of 2 (120019)

11% Off
Main highlights

EPA Approved and Safe
EPA approved cleaner that is safe for gasoline, diesel, and hybrid engines, ensuring no alteration in fuel composition.

Ideal for Performance Boost
Perfect for restoring catalytic converters, oxygen sensors, and fuel injectors, enhancing vehicle performance.

Highly Praised for Engine Light Fix
Frequently commended for reducing check engine light occurrences, saving on costly repairs.
9.7

Exceptional

Our Rating

9.1
Simple to use

8.0
worth the money

8.0
distance
How do we rank?

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Based on millions of stores and reviews

Shoppers influence our rankings
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Value for Money

2

DURA LUBE
DURA LUBE 2 Pack Severe Catalytic and Exhaust Treatment Cleaner Fuel Additive, 16 fl. Oz, 2-Pack Combo Pack
Main highlights

Boosts Engine Performance
Enhances fuel systems and engine performance, improving fuel economy and catalytic efficiency.

Ideal for Pre-Replacement Use
Use before replacing catalytic converter to potentially avoid costly repairs.

Highly Effective Cleaner
Customers praise its ability to clear codes and improve exhaust system function.
Key specs
- installation:Add to vehicle anytime
- oem part number:HL-40240-02
- vehicle fit:Universal fit
- material:N/A
- design:N/A
9.6

Exceptional

Our Rating
3

Chemical Guys
Chemical Guys Heavy Metal Polish Restorer and Protectant - Cleans, Restores, and Protects Chrome, Aluminum, Stainless Steel, and More, Safe for Cars, Trucks, Motorcycles, RVs, and Boats - 16 oz
Main highlights

Rejuvenates Metal Surfaces
Revitalizes tarnished and oxidized metals, providing a mirror-like finish.

Ideal for Vehicle Maintenance
Perfect for cars, trucks, and motorcycles, ensuring metal parts shine.

Highly Effective on Exhaust Tips
Praised for exceptional cleaning and polishing of exhaust tips.
9.4

Excellent

Our Rating

9.3
Simple to use

9.3
Sheerness

9.1
Long life
4

Liqui Moly
Liqui Moly Catalytic System Clean 300 ml 7110. Cleans The Injection System and The Combustion Chamber.

20% Off
Main highlights

Catalytic Converter Protection
Prevents clogging with soot, ensuring optimal converter performance.

Ideal for Gasoline Engines
Best suited for all gasoline engines with catalytic converters.

Enhanced Fuel Combustion
Commonly praised for improving fuel combustion and efficiency.
9.2

Excellent

Our Rating
5

Chemical Guys
Chemical Guys Signature Series Orange Degreaser - Heavy Duty All Purpose Cleaner for Engines, Tires, Undercarriages, Tools and More - Professional Strength, Breaks Down Grease, Oil and Grime, 16 oz
Main highlights

Professional Strength Formula
Signature Series Orange Degreaser offers professional-grade cleaning with citrus extracts and hyper surfactants for tackling tough dirt, grime, and grease.

Versatile Cleaning Applications
Ideal for cars, trucks, SUVs, motorcycles, RVs, and household uses like ovens and grills.

Highly Praised Performance
Customers love its effectiveness on engines and household surfaces, with easy application and impressive results.
Key specs
- size:8.66 x 2.36 x 2.36 inches
- application:Automotive surfaces
- cleaning method:Citrus degreaser
- usage:Engine degreaser
- country of origin:USA
9.1

Excellent

Our Rating

9.9
deep clean

9.3
Simple to use

9.3
Simple to take off
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6

Cataclean
Cataclean Fuel & Exhaust System Cleaner – Pass Emissions Tests – Clear Check Engine Lights – Restores Catalytic Converters, DPF Filters and Cleans Fuel Systems, 16oz (120007)

13% Off
Main highlights

Emissions Reduction
Lowers total hydrocarbon emissions by up to 50 percent.

Versatile Vehicle Use
Safe for gasoline, diesel, hybrid, and flex-fuel vehicles.

Customer Praise for Efficiency
Effectively resolves check engine light related to catalytic converters.
9.0

Excellent

Our Rating

8.9
Simple to use

8.0
worth the money

8.0
distance
7

DURA LUBE
Dura Lube Severe Catalytic and Exhaust Treatment Cleaner Fuel Additive, 16 fl. oz., (PN: HL-402409 PDQ3)
Main highlights

Performance and Economy Booster
Enhances fuel systems, improves engine performance, and increases fuel economy.

Ideal for Catalytic System Protection
Best used before replacing catalytic converters to maintain efficiency.

Customer Praised Emission Reduction
Notably reduces emissions, aiding in passing smog tests.
8.9

Very Good

Our Rating

9.9
Simple to use

8.0
worth the money

8.0
distance
8

Generic

2 Pcs Catalytic Converter Cleaner Auto Parts Engine, Exhaust System Pipe Carbon Removal Cleaner Treatment Additive Oil, Fuel System Treatment Oil Additive for Gas and Diesel Car
8.7

Very Good

Our Rating
9

STP

STP 1 Tank Tune Up Fuel Additive Fuel System Cleaner and Exhaust System Cleaner, Cleans Fuel Injectors, Intake Valves, Cylinder Head and Piston Tops, 12 Fl Oz
8.6

Very Good

Our Rating
10

Generic

Car Exhaust Pipe Cleaner, 120ml/4 FL.OZ, Rust Remover Spray for Chrome and Metal Surfaces, Long-Lasting
8.5

Good

Our Rating

10 Best exhaust cleaners of 2025

1

Cataclean Fuel & Exhaust System Cleaner – Pass Emissions Tests – Clear Check Engine Lights – Restores Catalytic Converters, DPF Filters and Cleans Fuel Systems, 16oz - Pack of 2 (120019)

9.1

8.0

8.0

How do we rank?

How do we rank?

Analyzing top stores

2

DURA LUBE 2 Pack Severe Catalytic and Exhaust Treatment Cleaner Fuel Additive, 16 fl. Oz, 2-Pack Combo Pack

3

Chemical Guys Heavy Metal Polish Restorer and Protectant - Cleans, Restores, and Protects Chrome, Aluminum, Stainless Steel, and More, Safe for Cars, Trucks, Motorcycles, RVs, and Boats - 16 oz

9.3

9.3

9.1

4

Liqui Moly Catalytic System Clean 300 ml 7110. Cleans The Injection System and The Combustion Chamber.

5

Chemical Guys Signature Series Orange Degreaser - Heavy Duty All Purpose Cleaner for Engines, Tires, Undercarriages, Tools and More - Professional Strength, Breaks Down Grease, Oil and Grime, 16 oz

9.9

9.3

9.3

6

Cataclean Fuel & Exhaust System Cleaner – Pass Emissions Tests – Clear Check Engine Lights – Restores Catalytic Converters, DPF Filters and Cleans Fuel Systems, 16oz (120007)

8.9

8.0

8.0

7

Dura Lube Severe Catalytic and Exhaust Treatment Cleaner Fuel Additive, 16 fl. oz., (PN: HL-402409 PDQ3)

9.9

8.0

8.0

8

2 Pcs Catalytic Converter Cleaner Auto Parts Engine, Exhaust System Pipe Carbon Removal Cleaner Treatment Additive Oil, Fuel System Treatment Oil Additive for Gas and Diesel Car

9

STP 1 Tank Tune Up Fuel Additive Fuel System Cleaner and Exhaust System Cleaner, Cleans Fuel Injectors, Intake Valves, Cylinder Head and Piston Tops, 12 Fl Oz

10

Car Exhaust Pipe Cleaner, 120ml/4 FL.OZ, Rust Remover Spray for Chrome and Metal Surfaces, Long-Lasting

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