Baldwin PE5272 Diesel Exhaust Fluid (DEF) Filter
OE Quality 60-Day Returns
Baldwin

Baldwin PE5272 Diesel Exhaust Fluid (DEF) Filter

Brand Baldwin PE5272
Fits "freightliner, mercedes-benz, western star buses, trucks"
Height 3 3/8
Height (mm) 85.7
Inside Diameter 1 1 1/32
Inside Diameter 1 (mm) 26.2
O-Ring [1] attached
Outside Diameter 1 1 11/16
Outside Diameter 1 (mm) 42.9
Replaces "freightliner a0001420089, a0001420289; mercedes-benz a0001420089
Fits —

DEF filter. Helps keep diesel exhaust fluid clean for reliable emission system performance.

Attached O-ring. Comes with a preinstalled seal for a simpler replacement.

$60.83Free shipping
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Not what you need? See all Diesel Exhaust Fluid (DEF) Filter options

Baldwin PE5272 DEF Filter for Freightliner and Mercedes-Benz

The Baldwin PE5272 is a diesel exhaust fluid (DEF) filter built for select Freightliner, Mercedes-Benz, and Western Star buses and trucks. It is an OE-style replacement for applications using Freightliner A0001420089 and A0001420289, as well as Mercedes-Benz A0001420089 and A0001420289.

Key Features

  • Part number: PE5272
  • Diesel Exhaust Fluid (DEF) filter for emission control service
  • Compatible with Freightliner, Mercedes-Benz, and Western Star buses and trucks
  • Height: 3 3/8 in. (85.7 mm)
  • Inside diameter 1: 1 1/32 in. (26.2 mm)
  • Outside diameter 1: 1 11/16 in. (42.9 mm)
  • Attached O-ring for sealing at the filter interface
  • Direct replacement references for Freightliner and Mercedes-Benz OE numbers

Detailed Description

Baldwin PE5272 is a DEF filter used in emission control systems on Freightliner, Mercedes-Benz, and Western Star buses and trucks. The filter dimensions and attached O-ring support proper fit in the DEF filtration housing, helping maintain fluid cleanliness in systems that rely on precise DEF delivery. If you are searching for a Baldwin PE5272 DEF filter, a Freightliner DEF filter replacement, or a Mercedes-Benz emission control filter, this part number is the correct reference to compare against OE numbers A0001420089 and A0001420289.

What It Helps Address

  • DEF contamination entering the emission control system
  • Restricted fluid flow caused by a clogged DEF filter
  • Service replacement for worn or degraded DEF filtration components
  • Fitment matching for Freightliner and Mercedes-Benz DEF filter applications
  • Emission system maintenance on compatible buses and trucks

Installation Notes and Tips

Verify the OE number, housing dimensions, and seal style before installation. Confirm the attached O-ring seats correctly and inspect the filter housing for debris or damage before fitting the new PE5272. For best results, compare the old filter’s height, inside diameter, and outside diameter to the listed specifications before service.

Quality Assurance

Baldwin is a recognized filtration brand with OE-style replacement coverage for heavy-duty applications. PE5272 is specified with published dimensions and OE cross-reference numbers to support accurate parts matching for Freightliner, Mercedes-Benz, and Western Star service work.

This part fits 0 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes