Bosch DEF Filter 1457436033, 1457436088 │ Replaces Fleetguard UF101

Bosch DEF Filter 1457436033, 1457436088 │ Replaces Fleetguard UF101The Bosch 1457436088 (supersedes 1457436033) is a DEF urea filter for SCR aftertreatment systems on Class 48 medium and heavy duty diesel trucks built for EPA 2010 emissions and later. It drops into the OEM DEF tank header to trap fluid contaminants and crystallization that damage dosing modules and supply pumps, replacing Cummins 5303604, Fleetguard UF101, Mack 21496421, and Volvo 21516229. Specifications Manufacturer Bosch Part Number 1457436088

Cummins QSM11 (industrial)

Baldwin BF877

35A Compatibility All vehicles using ATM (mini) blade fuses Typical Uses

and Cat C-series generator sets specifying the 326-1641 Advanced Efficiency primary fuel filter

The combo upgrade LF9691A swaps in the same envelope and adds StrataPore + Venturi media for extended service intervals

Slow brake release — chambers stay applied after pedal release

acrylic lens Standards FMVSS 108

later electronic Cat C-series and Mack MP engines use different filters

White or black smoke under load

Use only on the listed model years

Vocational truck pneumatic and air-suspension circuits

Cellulose-pack media captures finer particulate than standard cellulose at high dirt-holding capacity — Cat's spec service filter for 3406B/C/E