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🛠️ Protect your engine’s lifeline with FILTERWEARS – because your ride deserves the best defense!
FILTERWEARS F104L is a premium pre-filter cover designed to extend the life and efficiency of compatible air filters by blocking particles larger than 0.005 inches. Made from durable, hydrophobic monofilament polyester, it resists water and heat up to 450°F, reducing maintenance costs and enhancing engine protection. Easy to install with secure base straps, it’s the smart upgrade for professionals who demand reliability and longevity from their vehicle’s filtration system.
| ASIN | B01IU74D70 |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #75,575 in Automotive ( See Top 100 in Automotive ) #1,156 in Automotive Replacement Air Filters |
| Brand Name | FILTERWEARS |
| Customer Reviews | 4.7 4.7 out of 5 stars (671) |
| Fit Type | Vehicle Specific Fit |
| Manufacturer | FILTERWEARS |
| Manufacturer Part Number | F104L |
| Manufacturer Warranty Description | 60 days |
| Model Number | F104L |
| OEM Equivalent Part Number | B085011, PA2818, AH1141, CA6818, 6637, 46637 |
| Product Grade | Replacement Part |
| Shape | Round |
| Unit Count | 1.0 Count |
T**.
Will save you money get it
I recently purchased the FILTERWEARS Pre-Filter F104K for my air filter and have been extremely satisfied with my purchase. The pre-filter is easy to install and fits securely over my air filter, providing an extra layer of protection. One of the things that I love most about the FILTERWEARS Pre-Filter is that it extends the life of my air filter. It captures larger debris and dirt particles before they can reach the main filter, which means that I don't have to replace my air filter as frequently. The pre-filter is also very durable and easy to clean. It is made of high-quality materials that can withstand harsh conditions and is resistant to water and UV light. Overall, I highly recommend the FILTERWEARS Pre-Filter F104K to anyone looking to extend the life of their air filter and protect their engine. It is a simple and effective way to improve the performance and longevity of your vehicle.
J**Y
Excellent cover for and AFE filter
I have the AFE washable filter in my 99 F350 7.3 diesel. The cover I got from Riff raff diesel does not cover the front of the cover, but does help keep the main body of the filter cleaner. It was time to clean the filter and look for something that more fully covers the front of the filer. Works great, Snug fit, and helps keep the top of the filer clean as well as the main body. Will likely add another to the pack. I like high flow filters, but have always added some type of cover for added filtration as well as protection of the engine. Very nice.
S**.
Works great!
Fit my 6637 knockoff filter very well. The red looks real good with black engine bay. Would buy again.
C**Y
Buy it when you buy your filter
Definitely worth the money
I**E
Good initiai impression as it appears well made (proper fit and finish)
Arrived intact and as described. Snug fit over filter (expected) just be careful not to snag here and there. The tabs did not rip out while putting it on as it was massaged on from all around in increments (slow and steady). No tears, rips or blemishes so looks to be a very good start. Time will tell on it's durability however will try to update after some time. Thanks again for making something good and decent.
D**S
Glad I got it
Works great and last longer and can be blown out to clean, cover repells water and dust
T**O
Filter filter
It fits over the large generator filter and helps with larger debris from clogging the main filter. Does a great job! I recommend for all air filters to have one if possible.
J**T
Verry nice!
Love it, love it looks good! 🤣🤷♂️
R**N
Covers my Fleetguard AH1141 perfectly, just be careful putting it on not to catch on the sharp parts of the mesh and you'll be fine. Looks good, protects my filter and acts like a prefilter. Does not lose any power and turbo sound if thats what you're looking for. What else could you ask for!
M**T
Perfect fit and looks great, hoping to keep my filter fresh for as long as possible
A**N
Great idea. Easy install. Helps keep the filter cleaner
S**A
Good quality product. Fit perfect over my aftermarket napa filter on my 1996 Ford F-Superduty 7.3l. Shipping how ever was exceptionally slow to Canada, over a month to arrive!
T**L
Good quality pre filter
Trustpilot
2 weeks ago
2 days ago