Not sure how to measure your filter cartridge?
Check out this guide.
Drop-in replacement engineered to match the original cartridge geometry, end-cap style, and media surface area — without the OEM markup.
The XLS-842 3PACK 3-pack replacement cartridge is engineered for System 3 450 RETROFIT KIT and built for dependable day-to-day filtration performance. Each cartridge is sized at 8 15/16" diameter x 19 1/2" length, with Closed End top and Open End bottom end caps for direct-fit installation with no housing modifications.
Measure your old cartridge cap-to-cap. A variance of ⅛" is normal — anything larger likely means a different housing model.
Click any part number to verify the fit, or paste your existing part number into the search box.
No cross-reference part numbers on file for this cartridge yet — use Find My Filter to verify fit.
