For Upgraded Version or for Celect Engines use FS1000
What's the difference between Fleetguard's FS1212 and FS1000? The primary difference between the FS1212 and the FS1000 is the height of the filter and Efficiency Ratings. Time weighted average efficiency(Overall efficiency of the filter in repeated 10 minute intervals)
FS1212 - has a height of 7.92", TWA efficiency rating of 98.7%, and a Free Water Separation Efficiency of 90%
FS1000 - has a height of 9.806", a TWA efficiency rating of 96%, and a Free Water Separation Efficiency of 95%