🛡️ Protect your performance, extend your edge.
FILTERWEARS Pre-Filter F135K is a premium, hydrophobic polyester wrap designed to shield your S&B air filters from debris, dirt, and water. Engineered to block particles larger than 0.005 inches and withstand temperatures up to 450°F, it extends filter life and reduces maintenance frequency without compromising performance—even in freezing conditions. Easy to install with secure base straps, this USA-made pre-filter is a must-have upgrade for any high-performance air filtration system.
| Manufacturer | FILTERWEARS |
| Brand | FILTERWEARS |
| Item Weight | 2 ounces |
| Product Dimensions | 10 x 9.75 x 7 inches |
| Country of Origin | USA |
| Item model number | F135K |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | F135K |
| OEM Part Number | KF-1035, KF-1068 |
M**G
Works great.
Easy install, good snug fit over dry filter membrane.
B**J
Fits well
Works well on S&B cold air intake at the dunes.
B**N
Fits well. Does it's job.
Fits very well. Looks great. And does it's job.
B**J
Fits Perfectly
This product fits my S&B 1035 filter perfectly. It is easy to slide on and fits snugly.
J**O
Good product
I dont like that it cost $30, but it works well.
B**N
Peace of Mind!
Easy to install, and allows of peace of mind knowing the filter is clean.
C**Y
Great for S&B cold air intake protection
Awesome bag for filter. No issues. As grandma used to say, put a sock on it!
I**X
Wouldn't recommend
Pre-filter restricts airflow which causes poor efficiency. With pre-filter installed truck blows more black smoke than normal and gets worse fuel mileage
Trustpilot
1 month ago
2 months ago
