Baldwin B1431 Engine Oil Filter

Baldwin B1431 Oil Filter for Mitsubishi

The Baldwin B1431 is an engine oil filter built for Mitsubishi Automotive applications that call for a 2 21/32-inch filter with M20 x 1.5 threads. It uses an anti-drainback valve and a 14 PSID by-pass valve to support oil retention and controlled flow during cold starts and restricted-flow conditions.

Key Features

• Part number: B1431
• Fits Mitsubishi Automotive applications
• Thread size: M20 x 1.5
• Outside diameter: 2 21/32 in. (67.5 mm)
• Height: 4 in. (101.6 mm)
• Contains an anti-drainback valve
• Includes a 14 PSID by-pass valve
• Integral gasket included
• Replaces Mitsubishi AW343979 and MD352627

Detailed Description

Baldwin B1431 is an OE-style engine oil filter for Mitsubishi vehicles that require the listed dimensions and thread specification. It is a direct replacement for Mitsubishi AW343979 and MD352627 and is sized for applications such as the Mitsubishi Eclipse, Endeavor, Galant, and Diamante. If you are searching for a Baldwin B1431 oil filter for Mitsubishi Eclipse 2006-2007 or a Baldwin B1431 replacement for Mitsubishi Galant 2006-2007, this filter matches the documented fitment and hardware profile.

This part cross-references Mitsubishi AW343979 and MD352627 for the same application.

Used For

• Replacing a worn or clogged Mitsubishi engine oil filter
• Maintaining oil flow control during cold starts
• Supporting oil retention after engine shutdown
• Addressing filter fitment for Mitsubishi vehicles with M20 x 1.5 threads
• Restoring service intervals on Eclipse, Endeavor, Galant, and Diamante applications

Installation Notes and Tips

Verify the filter thread, diameter, and height against the original part before installation. Confirm the gasket seats cleanly on the mounting surface, and pre-fill only if the vehicle service procedure allows it. For fitment, use the exact vehicle listing: Fits 2006-2007 Mitsubishi Eclipse, N/A; Fits 2006-2007 Mitsubishi Endeavor, N/A; Fits 2006-2007 Mitsubishi Galant, N/A; Fits 2001-2003 Mitsubishi Diamante, N/A; Fits 2000 Mitsubishi Diamante, N/A; Fits 1997-1999 Mitsubishi Diamante, N/A.

Quality Assurance

Baldwin filters are built to published dimensional and functional specifications for the listed Mitsubishi applications. The B1431 includes an anti-drainback valve, a 14 PSID by-pass valve, and an integral gasket for service-ready installation.