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

  • Free Shipping on Orders Over $40
  • In stock, ready to ship
  • Inventory on the way

• Removes carbon build-up from injectors and injector tips to ensure correct spray patterns. This leads to restored performance and improved fuel economy.

• Unique formulation removes carbon from post-combustion components including the turbo and DPF

• Eliminates harmful turbo deposits which cause lag and less boost. Use of AR6400-D results in unrestricted movement of the turbo/variable vanes to avoid issues with excess heat and wear

• Improves combustion which benefits the EGR with a reduction in carbon accumulation

• Powerful chemistry cleans the DPF and reduces regen cycles

• Developed for use in all diesel engines

One 12 oz bottle treats 40 gallons of diesel. Add to the fuel tank before adding diesel fuel. Use every 5,000 miles.

AR6400-D Diesel Fuel System Cleaner

Archoil's AR6400-D delivers a powerful and thorough cleaning service to the fuel system to quickly solve issues associated with carbon build-up and clogged injectors and should be used every 5,000 miles.

"Archoil AR6400-D Diesel Fuel System Cleaner is absolutely crucial to the longevity of the engine and the fuel injection system in all Power Strokes." - Bill Hewitt


Archoil AR6400-D rapidly removes internal diesel injector deposits and build-up from injector tips. This ensures correct injector spray patterns for a more complete combustion and lower emissions for optimized performance.


AR6400-D clears the turbine and variable vanes of soot and carbon, reducing turbo lag and restoring boost. This reduces excess heat and wear, avoiding premature failure of the turbo.


AR6400-D improves combustion to reduce carbon, soot and particulate exhaust emissions as well as removing heavy deposits from the DPF. This reduces regen frequency and prevents performance loss and potential engine damage

Diesel Fuel System Kit

Save more when you buy an Archoil Performance Kit. This Diesel Fuel System Kit includes AR6500 Diesel Treatment (40oz) and AR6400-D Diesel Fuel System Cleaner (12oz).

For the most rapid results, highest protection and best value, AR6500 Diesel Treatment should be used after application of Archoil AR6400-D. AR6500 Diesel Treatment is an everyday additive that protects your fuel system and boosts power, response and MPG at every fill-up.

Shop Performance Kits


This is the must-have kit for your diesel vehicle, including AR6500 Diesel Treatment (40oz), AR9100 Friction Modifier (16oz) and AR6400-D Diesel Fuel System Cleaner (12oz).

AR9100 eliminates stiction and associated cold start problems in 6.0L & 7.3L Power Strokes while AR6500 provides regular maintenance to your fuel system at every fill-up, combating issues associated with poor quality diesel. AR6400-D provides a powerful, one-tank cleaning service to remove harmful carbon build-up from the fuel system.


Customer Reviews

Based on 192 reviews
Joshua Rowe
Seems to be working great

Haven’t been able to check mpg yet but truck is running smoother. I use all the arch oil products.

Chandler Cobb
Noticeable improvement!!

Absolutely nothing to hate about Archoil!! Excellent products for todays diesel fuels. It’s a must for CP4’s to have the fuel additives; the 6400-D, and change your fuel filters every other oil change and say a prayer and your CP4 should be good for 100k miles when you should probably replace it to save you from the issues if it does fail. Archoil gives you the best advantages to saving your Diesel engine! Can’t go wrong with Archoil!

Peter OConnor
Great product

Use the products on my 2019 F350 6.7 . For Maintenance & prevention .

Dennis Stith

good product

bryan morris

Incredible product. My 7.3 has 289,000 miles with the original injectors. Running extremely smooth now and restored my original fuel mileage!