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Ships within 48 hours · Estimated delivery Jun 14 - Jun 19
For Your Every Summer RSVP, with Code: SUMMER15
Description
CRC Knock'er Loose® Penetrating Solvent 13 Wt OzSomething as simple as rust and corrosion on nuts and bolts can make an easy job feel impossible. Now you can loosen rusted bolts quickly, with CRC Knocker Loose Penetrating Solvent. Knocker Loose can make any job go faster by loosening seized or bound fasteners, allowing you to remove them without extra effort or stress. Read 'More Information' to learn about how Knocker Loose can help you remove rust and even prevent it from returning. Applications

Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 237 reviews
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Product Reviews
★★★★★ 5
Engine Air Filter
Size: (Pack of 1)
This engine air filter fit perfectly in my 2018 Honda CR-V. No idea how it will perform but so far the Check Engine Light has not come on since installing the filter. Since there have been no problems I am happy with this filter and will likely buy again in the future. The filter does appear to be made from quality materials.
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Reviewed in the United States on April 19, 2026
★★★★★ 5
I love eco guard engine and air filter
Size: (Pack of 1)
Great price with good quality.
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Reviewed in the United States on May 3, 2026
★★★★★ 4
My mileage on my 2021 Honda CRV dropped 4 miles /gallon with this air filter.
Size: (Pack of 1)
My mileage on my 2021 Honda CRV dropped 4 miles /gallon with this air filter. It did fit well and was easy to install, but then I watched my average around town mileage drop from 29-31mpg to 26-27 mpg thru 2 tank fillups. The Honda repair person said this filter looked like the Honda one and was surprised when we wanted to switch it out. Granted, it looked just like the Honda filter, but the folds on the Honda one are yellowish and I have to think there has to be some difference in the texture. The average mileage went back up within 10 miles of replacing it and 3 fill ups later it has continuously maintained its original average of 29-31 with the Honda filter.
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Reviewed in the United States on February 14, 2024
★★★★★ 5
As good as Original Manufacturer Equipment.
Size: (Pack of 1)
Cheaper than having the dealer or oil change store do it. Only takes a minute to replace your existing filter for a lot less than what they want to charge you. High quality too!
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Reviewed in the United States on January 9, 2026
★★★★★ 5
Excellent Honda Alternative
Size: (Pack of 1)
I try to get everything and to keep everything as a manufacturer original on a car as possible. I will say that this filter is just as good as the Honda. The installation was very simple, you just need a screw driver to unscrew the 4 screws in the air box and this sits right in. The engine ran better and immediately got so much better MPG. I did not notice the engine struggling for air at all, if anything the car ran better. The fitment was the same size and just as good as the Honda.
P.S Don't be like me. Don't hesitate to buy it. You'll love it. No questions asked!
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Reviewed in the United States on August 31, 2025




