SKU: 45874625491

Liqui Moly Pro-Line Diesel Particulate Filter Cleaner 500ML 5171

Sale price$27.00 Regular price$30.00
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Description

Liqui Moly Pro-Line Diesel Particulate Filter Cleaner 500ML 5171Highly effective cleaning and neutralization fluid required after cleaning the diesel particulate filter with Pro Line Diesel Particulate Filter Cleaner. Pro Line Diesel Particulate Filter Purge washes out the soot dissolved by the cleaner and distributes it in the diesel particulate filter so that it can be burned off with normal regeneration. The cleaner is neutralized by the Purge. This product is also used with the diesel particulate filter

Highly effective cleaning and neutralization fluid required after cleaning the diesel particulate filter with Pro-Line Diesel Particulate Filter Cleaner. Pro-Line Diesel Particulate Filter Purge washes out the soot dissolved by the cleaner and distributes it in the diesel particulate filter so that it can be burned off with normal regeneration. The cleaner is neutralized by the Purge. This product is also used with the diesel particulate filter installed. Problems with clogged diesel particulate filters mostly affect vehicles driven short distances. That means the interval for cleaning with Pro-Line Diesel Particulate Filter Cleaner and Purge is very much dependent on the use of the vehicle. Regular cleaning can help reduce running costs. No more need for the usual and costly business of replacing the diesel particulate filter.
Areas of application
For rinsing the diesel particulate filter (DPF / FAP) in installed condition after cleaning with Pro-Line Diesel Particulate Filter Cleaner.
Application
Cleaning is performed with the DPF Pressure Cup Spray Gun (part no. 7946) and the specially developed DPF Gun with 5 spray probes (part no. 7945). Depending on the type of vehicle, access to the diesel particulate filter is to be established. On most vehicles, the temperature or pressure sensor of the diesel particulate filter must be removed for this. Note: The temperature of the particulate filter during cleaning should be less than 40 °C. In some vehicles the diesel particulate filter is located near the exhaust manifold or in some cases the turbocharger rather than on the underbody. For safety reasons, extreme care must be taken when cleaning these vehicles to ensure that no cleaning or flushing fluid gets into the combustion chamber through an exhaust valve that has been left open. The appropriate Pro-Line Spray Probe for the type of vehicle is introduced into the particulate filter through the opening that is created. The total amount of ProLine Diesel Particulate Filter Cleaner cleaning fluid (1 l) is sprayed directly onto the surface of the particulate filter in several intervals of 5 - 10 seconds with a break of 5 - 10 seconds in each case at an operating pressure of 6 - 8 bar. In order to coat the entire surface with Pro-Line Diesel Particulate Filter Cleaner to the greatest possible extent, the probe must be turned and moved back and forth when cleaning. Wait approx. 15 minutes to allow the cleaner to take effect. The particulate filter is then rinsed with the total amount of flushing fluid (500 ml) with Pro-Line Diesel Particulate Filter Purge. Processing is likewise performed with the DPF Pressure Cup Spray Gun (part no. 7946) at the same intervals as for the cleaning fluid. The cleaning process dissolves the soot enough and distributes it in the particulate filter so that it can be burned off with normal regeneration. After the sensor has been reinstalled, the service operation or the workshop must initiate a regeneration according to the manufacturer’s specifications. Attention: Refer to the safety data sheet for the protective measures to be taken when handling the product.
Comment
CAUTION: Depressurize After applying pressure vessel and completely. Gun should not be stored with material in the container.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 45874625491

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4.0 ★★★★★
Based on 5 reviews
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Product Reviews
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Verified Purchase
Jebin I Kochakkan
Natrona Heights, US
★★★★★ 5
Works great!
Size: 7.5" x 8.7" x 1.4"
This is a great filter for allergies and a huge help during allergy season. It traps fine dust and pollen much better than the standard paper filters you get from the dealership, resulting in noticeably cleaner air inside the cabin. The construction feels very solid, and it fit perfectly right into the housing without any issues. If you are looking for true HEPA filtration in your vehicle, this is definitely worth the upgrade!
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Reviewed in the United States on March 13, 2026
L
Verified Purchase
LD
Bozeman, US
★★★★★ 5
Saved over $60 and felt like a DIY hero!
Size: 7.5" x 8.7" x 1.4"
I bought the BOSCH 6092C HEPA Cabin Air Filter after a tire/service center quoted $76 to do the same job I did in no time. Instead, I watched a quick YouTube video, grabbed a screwdriver, and had it swapped out in under 5 minutes—no sweat, no special tools. The filter itself is high quality, fits perfectly, and noticeably improved the air quality in my car. No weird smells, and the airflow feels cleaner and stronger. Honestly, it’s one of the easiest upgrades I’ve ever done. If you’re even slightly handy (or just tired of paying for basic service), this is a no-brainer. Great product, easy install, and a satisfying win for anyone who likes saving money and doing things themselves.
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Reviewed in the United States on October 18, 2025
S
Verified Purchase
sb
Port Orchard, US
★★★★★ 5
Great aftermarket filter
Size: 7.5" x 8.7" x 1.4"
Performance will be TBD but after a test air does smell a bit cleaner. It Fits a 2018 Subaru Impreza just like the OEM does. Material is significantly better as well. The only thing that will cause confusion is the arrow designation many are used to. The OEM will state which way the filter is to be oriented (up), and this aftermarket version designates which way airflow goes which is usually in the direction of the blower or engine bay (down). Keep that in mind. Otherwise, it’s so easy and such a good peace of mind maintenance item everyone should do and NEVER pay the dealer.
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Reviewed in the United States on December 6, 2025
M
Verified Purchase
Metalcastr
West Palm Beach, US
★★★★★ 4
Works ok, but not perfect. Manage expectations.
Size: 7.5" x 8.7" x 1.4"
My goal was to reduce or eliminate bad particulate odors coming in from outside while driving, as drive through areas with high particulate pollution. Sure, recirc mode exists, but then cars fill up with CO2 quickly, and high concentrations of CO2 makes you drowsy and have slow reaction times, etc. So I looked into better cabin air filters. My Subaru has an easy-to-access cabin air filter. I learned how to properly change it via online videos, because the dealership wants over $50 just to change the filter, and it only takes a few minutes! The OEM filter I took out is not that good, and only meant for larger particulates, to protect the HVAC system. It reminded me of the cheaper (but not cheapest) furnace air handler filters. Placing this new filter in and testing it, it does block more airflow, which is to be expected from a finer filter. My car's blower has 7 running speeds (plus off), and I needed to turn it up one notch higher to get about the same airflow, versus the previous filter. The filter seems to work, somewhat. If behind a diesel truck, I still smell it. Same with cigarette smoke from a car in front. It doesn't block vape vapors at all, it seems. However, maybe I was expecting too much. The infographic for this filter clearly shows the size of particulate it can handle, which I appreciate very much. Diesel exhaust is a very fine particulate, smaller than this filter can filter. I also wonder if outside air is getting around the filter in the filter housing, since it just slides in, like a furnace air handler filter. It has a good fit though, in my car at least. What I need is an even finer filter, but that would likely block a lot more airflow. There are various manufacturers of high-end cabin air filters, but I don't know if they match or exceed the quality of this one.
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Reviewed in the United States on January 10, 2025
D
Verified Purchase
Deidra Richards
Grantham, US
★★★★★ 5
Good as OEM
Size: 7.5" x 8.7" x 1.4"
2024 Sub Crostrek, it fit great. I was so worried, that I need to get the OEM filter, but I went with this instead. Today as I installed the new filter, it looks as good or better than the original. I get that there's more to it than looks, but the quality of the look and feel appear to be matching that of the original, perhaps i might suggest it's even better.
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Reviewed in the United States on March 28, 2026

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