Baldwin B281 Engine Oil Filter
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Baldwin

Baldwin B281 Engine Oil Filter

Brand Baldwin B281
Contains Anti-drainback valve;20 psid by-pass valve
Fits "komatsu, new holland equipment; onan generators; vm engines"
Height 5 3/8
Height (mm) 136.5
Integral Gasket {g381-a}
Outside Diameter 1 3 11/16
Outside Diameter 1 (mm) 93.7
Replaces Onan 122-0550; vm engines 4115030
Thread M22 x 1.5
Fits —

Anti-drainback valve. Helps keep oil in the filter to support quicker lubrication at startup.

20 PSID bypass valve. Maintains oil flow when the filter reaches restriction.

Integral gasket. Provides a built-in sealing surface for a cleaner installation.

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Baldwin B281 Engine Oil Filter

The Baldwin B281 is an engine oil filter for equipment and engines that call for an M22 x 1.5 thread, a 5 3/8 in. height, and a 3 11/16 in. outside diameter. It is built with an anti-drainback valve and a 20 PSID by-pass valve to support oil flow control in demanding service.

Key Features

  • Part number B281 for direct catalog lookup
  • Engine oil filter for Komatsu, New Holland equipment, Onan generators, and VM Engines applications
  • Anti-drainback valve helps retain oil in the filter after shutdown
  • 20 PSID by-pass valve for controlled oil circulation under restriction
  • M22 x 1.5 thread for specified engine and equipment fitments
  • Integral gasket: G381-A
  • Dimensions: 5 3/8 in. height, 3 11/16 in. outside diameter

Detailed Description

The Baldwin B281 oil filter is specified for engine and equipment applications where the listed thread, gasket, and size dimensions match the original filter requirements. It replaces Onan 122-0550 and VM Engines 4115030, and it is referenced for Komatsu, New Holland equipment, Onan generators, and VM Engines service needs. For buyers searching for a Baldwin B281 oil filter, Onan 122-0550 replacement, or VM Engines 4115030 cross-reference, this part provides the listed sealing and valve features in a service filter format.

This part cross-references Onan 122-0550 and VM Engines 4115030 for the same application.

What It Helps Address

  • Oil filter replacement when the existing filter uses M22 x 1.5 threads
  • Service intervals where a worn or restricted filter needs replacement
  • Oil drain-back after shutdown in generator or equipment use
  • By-pass valve operation when filter restriction increases
  • Replacement needs for Komatsu, New Holland equipment, Onan generators, and VM Engines applications

Installation Notes and Tips

Verify the thread size, gasket reference, height, and outside diameter against the removed filter before installation. Confirm the sealing surface is clean and lightly lubricate the gasket before tightening to the manufacturer’s specified procedure. For search terms such as Baldwin B281 for Komatsu equipment, Baldwin B281 for New Holland equipment, or Baldwin B281 for Onan generators, match the listed dimensions and replacement references before ordering.

Quality Assurance

Baldwin filters are cataloged for professional engine and equipment service, with application-specific dimensions and valve specifications listed for identification. Use the part number B281 and the replacement references to confirm the correct filter for the engine or equipment being serviced.

Related reading

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