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Liqui Moly

Liqui Moly 8931 Catalytic-System Cleaner

    • Based on 939 reviews
Condition: New
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$19.28 Why this price?
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This item is eligible for return within 30 days of receipt

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Availability: In Stock.
Fulfilled by Amazon
Arrives Friday, Dec 27
Order within 43 minutes
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Features

  • Special combination of additives for cleaning and removal of sediments and typical impurities in the intake system and combustion
  • Catalytic-system
  • Item Package Weight: 0.299 kg
  • Item Package Dimension: 17.6cm L x 5.0cm W x 5.0cm H

Description

Catalytic-system cleaner


Brand: Liqui Moly


Product Dimensions: 4.72"L x 2.36"W x 2.36"H


Package Information: Bottle


Item Weight: 0.3 Kilograms


Model Name: 2


Manufacturer: ‎LIQUI MOLY


Brand: ‎Liqui Moly


Model: ‎2


Item Weight: ‎10.6 ounces


Item model number: ‎08931


Is Discontinued By Manufacturer: ‎No


Manufacturer Part Number: ‎8931


Rim Diameter: ‎300 Millimeters


Date First Available: July 30, 2017


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Dec 27

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • 66233708
Can't really say that its worked so far. After about 30mins of ruining it @3000 RPMs continuously for about 30 mins it started to sputter, gave it some gas and to pushed out what seemed to be carbon and smoothed back out. I've only driven it a few times since, have been getting the band 2 below threshold which is watch brought me to purchase the product in hopes to clean out the cat. Randomly getting the bank 2 fault and and now bank 1 also. We'll see if this works or if I will have to remove the cats and either clean them or replace them, hoping it won't come to that ... show more
Reviewed in the United States on August 21, 2023 by OldSchool
    • It works / No check engine /2010 Audi
Review Image by Great reception, Used it outside of the city in high desert got the job done in communication while inside vehicles Great reception, Used it outside of the city in high desert got the job done in communication while inside vehicles
I had to pass my car for Smog here in CA… Had my doubts but I used product as instructed drive it on the fwy right after for 20 min straight and later passed smog same week…. Thank you
Reviewed in the United States on September 25, 2023 by Great reception, Used it outside of the city in high desert got the job done in communication while inside vehicles Great reception, Used it outside of the city in high desert got the job done in communication while inside vehicles
    • Code 0420. First time worked for 250mi. Code 0420. Pontiac Vibe, 2003
I got code 0420. Tried different product that you put into gas tank. Code came up soon and it didn't seem to work. This time used this product and it lasted for 250mi. I'll give it one more try and write an update here. Update: second time worked for 120mi. Unfortunately, my code 0420 wasn't solved. UPDATE: after the second bottle it took me 150mi before the code 0420 appeared. Unfortunately it didn't work for me. My car has 208,000, but I changed cat two years ago, so hopefully it's something else. ... show more
Reviewed in the United States on August 5, 2023 by Dmytro
    • Requires specialized application
I was hoping this would help clear a partially clogged catalytic converter that kept setting off codes in my Chevy Malibu. After reading the application instructions and viewing an application video, I realized this is intended for race cars - or at least that’s what they showed, and requires as specialized mixing bottle to atomize the material before getting sucked in through a vacuum port. One source on the Mfg’s web site said you could put it in a spray bottle and apply a fine atomized mist through the throttle body intake of a vehicle. I attempted that with limited success (having to disconnect my Mass Air Flow sensor - before starting the car - and spraying it into the air intake housing). I tried to rev the engine while spraying the contents into the air intake, but I think most of the content just puddled somewhere. I was hoping for some sign of it working while spraying but didn’t see any. Then I buttoned everything back up and took the car for a ride and produced a HUGE black cloud of exhaust in the first 50 feet of travel. I then heavily accelerated hoping to push all the cleaner through the system but think it was a quick one-shot deal at the beginning only. It may have done some good because my trouble code hasn’t returned yet, but it usually takes several weeks of driving to see it return after clearing. I doubt I properly applied the product, but also don’t think it is reasonable for the average Joe to be able to properly apply this product, so am not scoring it very highly in this review. Maybe someone else could get much better results. ... show more
Reviewed in the United States on June 26, 2023 by J. Currier
    • Saber como usar el producto
Este producto funciona muy bien solo que tienen que saber como usarlo debe de aplicarlo por la mariposa a 2,000 revolución y luego darle una vuelta y veras los resultados yo lo uso tres veces por año y mi auto no prende el código 0420
Reviewed in the United States on September 12, 2023 by EJB Pelegrin
    • Great additive improved gas mileage instanly
Great product used as instructed ,,pump n into intake a have some one Rev thru the rims up till 4 then back down while spraying a mistyhru a vacuum port
Reviewed in the United States on September 19, 2023 by db gotkicks
    • LUBE MOLY IS THE BEST
This is a superior product and did what it promised to do. All of the products this company sells are high quality products.
Reviewed in the United States on September 23, 2023 by Lube Moly is a superior product and I have found everything they offer to work efficiently and as advertised.
    • did not fix my check engine light
this product did not work for me as far as my check engine light for cat converter. it did however make the engine run better, smoother and lowered idle rpm by 2 or 3 hundred rpms. also this was a huge pain to spray into my intake and therefore can not recommend. check engine light came back after one long ride but i did manage to get a sticker first ... show more
Reviewed in the United States on October 2, 2023 by Melissa Sandberg

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