Baldwin B40137 Engine Oil Filter

Baldwin B40137 Engine Oil Filter for Isuzu Trucks

The Baldwin B40137 is an engine oil filter built for select Isuzu FTR, NPR, NPR-HD, NPR-XD, NQR, and NRR trucks. It uses a 1 1/2 thread, includes an attached gasket, and incorporates a 35 PSID by-pass valve for controlled oil flow under restriction.

Key Features

• Part number: B40137
• Engine oil filter for Isuzu medium-duty trucks
• Attached gasket included
• 35 PSID by-pass valve
• Thread size: 1 1/2
• Height: 4 15/16 in. (125.4 mm)
• Outside diameter: 4 21/32 in. (188.3 mm)
• 12 threads per inch
• Replaces Isuzu 2906544040, 2946542000, and Fleetguard LF17537

Detailed Description

The Baldwin B40137 oil filter is specified for Isuzu FTR, NPR, NPR-HD, NPR-XD, NQR, and NRR trucks that require this filter configuration. Its dimensions, thread pitch, and by-pass valve setting make it a direct service part for engines that use the listed OE and cross-reference numbers. For fleet maintenance and routine oil service, B40137 supports proper filtration in demanding commercial truck duty cycles. Baldwin B40137 is a practical replacement choice when servicing Isuzu FTR, NPR, NPR-HD, NPR-XD, NQR, and NRR trucks.

This part cross-references Isuzu 2906544040 and Fleetguard LF17537 for the same application.

Common Service Uses

• Replacing a clogged or restricted engine oil filter
• Restoring proper oil filtration during scheduled maintenance
• Addressing oil service intervals on Isuzu medium-duty trucks
• Matching OE-style filter dimensions and thread specifications
• Servicing trucks that call for Isuzu 2906544040 or Fleetguard LF17537

Installation Notes and Tips

Verify the thread size, gasket seal surface, height, and outside diameter before installation. Pre-lube the gasket, tighten the filter to the manufacturer’s service specification, and confirm there are no leaks after startup. Always compare the existing filter number and engine application before ordering the Baldwin B40137.

Quality Assurance

Baldwin filters are built for commercial vehicle service and are identified by precise dimensional and performance specifications. The B40137 is defined by its attached gasket and 35 PSID by-pass valve, giving technicians the data needed to match the correct service part for Isuzu truck maintenance.