- Replacement Filters : R-101, R-111, R-121
A-301 replacement cartridge R-101, R-111, and R-121 Breather
Replacement silica gel filter for R-101, R-111, and R-121 breathers used for high vibration and mobile applications, including off-road, construction and farm vehicles. When the gold silica gel cartridge turns dark green, simply install a new replacement cartridge to keep things moving!
*This item is SPECIAL ORDER and has a 10 day lead time.