Baldwin B1431 Engine Oil Filter

Overview of Baldwin B1431 Engine Oil Filter

The Baldwin B1431 engine oil filter is designed specifically for Mitsubishi vehicles, including the Diamante, Eclipse, Endeavor, and Galant models. Engineered to maintain optimal oil cleanliness, this filter supports engine longevity and performance by effectively removing contaminants.

• Includes anti-drainback valve and 14 psid by-pass valve for reliable oil flow
• Compatible with Mitsubishi automotive models: Diamante, Eclipse, Endeavor, Galant
• Height: 4 inches (101.6 mm) with an outside diameter of 2 21/32 inches (67.5 mm)
• Integral gasket included for secure sealing
• Thread size: M20 x 1.5 for proper fitment
• Replaces Mitsubishi part numbers AW343979 and MD352627

Detailed Product Description

The Baldwin B1431 engine oil filter is engineered to meet the filtration requirements of select Mitsubishi vehicles. Featuring an anti-drainback valve, it prevents oil from draining out of the filter when the engine is off, ensuring immediate oil flow at startup. The 14 psid by-pass valve allows oil to bypass the filter element under high pressure conditions, protecting the engine from oil starvation. With a height of 4 inches (101.6 mm) and an outside diameter of 2 21/32 inches (67.5 mm), this filter fits securely on compatible Mitsubishi models. The included integral gasket ensures a tight seal to prevent leaks, and the M20 x 1.5 thread size matches OEM specifications for easy installation. This filter is related to Baldwin’s B1400 and B1402 short versions but is designed for applications requiring the full height filter.

Compatible Vehicles and Applications

• Mitsubishi Diamante
• Mitsubishi Eclipse
• Mitsubishi Endeavor
• Mitsubishi Galant

The B1431 oil filter replaces Mitsubishi OEM part numbers AW343979 and MD352627, making it a direct replacement for these models.

Common Issues Addressed by Baldwin B1431

• Prevents engine wear caused by contaminated oil
• Reduces risk of oil starvation during cold starts with anti-drainback valve
• Protects engine under high oil pressure with 14 psid by-pass valve
• Ensures proper sealing to avoid oil leaks
• Maintains consistent oil flow for engine performance

Installation Notes and Tips

Before installing the Baldwin B1431 oil filter, ensure the engine is cool to avoid burns. Remove the old filter and clean the mounting surface thoroughly. Verify the integral gasket is properly seated on the new filter. Apply a thin layer of clean engine oil to the gasket to improve sealing and ease installation. Thread the filter by hand until the gasket contacts the mounting surface, then tighten according to manufacturer torque specifications. Check for leaks after installation and during initial engine operation.

Quality Assurance and Warranty

Baldwin filters are manufactured to meet strict quality standards, ensuring reliable filtration and durability. The B1431 engine oil filter is built to OEM specifications for Mitsubishi vehicles. While specific warranty details are not provided here, Baldwin products typically come with a limited warranty against defects in materials and workmanship. Consult Baldwin’s official documentation for complete warranty information.