AR6400-D Diesel Fuel System Cleaner
AR6400-D Diesel Fuel System Cleaner
AR6400-D Diesel Fuel System Cleaner
AR6400-D Diesel Fuel System Cleaner

AR6400-D Diesel Fuel System Cleaner

Sale price$24.95
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AR6400-D is a highly concentrated one-tank fuel system cleaner that rapidly cleans injectors, the turbo and DPF.
  • Rapidly cleans injector tips and IDIDs
  • Removes carbon and restores turbo function
  • Eliminates DPF build-ups and reduces regens
  • Restores power, performance and MPG
  • Improves combustion to reduce carbon, soot and particulate exhaust emissions

One 12 oz bottle of AR6400-D treats 40 gallons of diesel fuel.

Add AR6400-D to the fuel tank at the required dosage and then add fuel. Treat 40 gallons for a complete clean. Use every 5,000 miles or as required.


Improve Power, Performance and MPG

Carbon build-up negatively affects the performance and life of your fuel system. AR6400-D Diesel Fuel System Cleaner rapidly cleans injectors, turbos and DPFs to restore power, performance and MPG. Experience restored performance, improved fuel economy and smoother idling as a result of cleaning the fuel system with AR6400-D.



• Rapidly removes internal diesel injector deposits (IDID) and carbon build-up from injector tips

• Ensures correct injector spray patterns, resulting in a more complete combustion and lower emissions for optimized performance


• Clears the turbine and variable vanes of soot and carbon, reducing turbo lag and restoring boost

• Prevents the accumulation of carbon to reduce excess heat and wear, avoiding premature failure of the turbo


• Improves combustion to reduce carbon, soot and particulate exhaust emissions

• Removes soot and heavy carbon deposits from the DPF

• Reduces regen frequency

• Prevents performance loss and potential engine damage from a clogged DPF

AR6400-D FAQs

AR6400-D is a highly concentrated one-tank fuel system cleaner to be used every 5,000 miles. AR6500 cleans and maintains the fuel system and adds cetane for a boost that can be felt at every fill-up.

AR6400-D is suitable for all diesel vehicles, including newer systems such as High Pressure Common Rail.

Customer Reviews

Based on 241 reviews
Van g. (Kansas City, MO, US)
Revived a rough running 7.3

I put a bottle in a tank of old diesel fuel in an E350 (370k miles) that had been sitting for a year. It ran for a few miles then must have picked up algae and started running rough. After changing the fuel filter and adding the AR6400-D it’s cleared right up and continued to run really well. I’m about 200miles in now with topped off fresh fuel still running good.

Charles L. (Albuquerque, NM, US)

I have a stock 2009 6.7 Cummins with 85k miles. for the past year my mpg has been decreasing little by little The best mpg was 12.5. I used one treatment of the AR 6400-D diesel fuel system cleaner. It took about two hundred miles before I noticed any change. Happy to inform you all that my mpg increased to 19.6. Very satisfied with this product!!

Ryan M. (Seattle, WA, US)
Injector cleaner 7.3L powerstroke

Smoothed my idle out a little bit. My truck never had cold start issues and I've heard that's where you notice it the most. Decent product for 20$

Frank P. (Douglas, AZ, US)
Great performance

Used the product my check engine light was on telling me my exhaust sensors were in need of cleaning put a bottle of cleaner in my diesel ran awhile check engine light went off gave me good mileage will the 6400 to keep it clean great product

Paul A.W. (Estacada, OR, US)
Good result

2002 5.9 liter 24 valve, 150,000 miles. Throttling during idling. This symptom has persisted even after treating the fuel with injector cleaners.
After using two treatments of AR6400-D that idle throttling has subsided.
This saves me from pulling the valve cover and removing the injectors for cleaning or replacement.
This is a positive result in my book.



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