Baldwin BT8878-MPG Transmission Oil Filter

Baldwin BT8878-MPG Transmission Oil Filter

The Baldwin BT8878-MPG transmission oil filter is built for Caterpillar and Champion Equipment applications that require a large-format transmission filter with a 1 3/4 thread. It features an integral gasket and dimensions that support service on heavy-duty equipment using Baldwin OB8771, OB8772, or OB8773 bases.

Key Features

• Part number: BT8878-MPG
• Transmission oil filter for heavy-duty transmission service
• Fits Caterpillar and Champion Equipment applications
• Height: 11 17/32 in. (292.9 mm)
• Outside diameter: 4 23/32 in. (119.9 mm)
• Thread size: 1 3/4
• 12 threads per inch
• Integral gasket included
• Can be used with Baldwin OB8771, OB8772, and OB8773 bases
• Replaces Champion 45543

Product Details

Baldwin BT8878-MPG is a transmission oil filter specified for Caterpillar and Champion Equipment service needs where the filter base and thread pattern must match the original setup. The BT8878-MPG part number is a direct reference for buyers searching for a Baldwin transmission oil filter replacement, and it cross-references Champion 45543 for the same application. Its tall canister design, 4 23/32-inch outside diameter, and 1 3/4-thread connection make it a practical choice for equipment maintenance where correct fit and sealing are critical.

Common Service Issues It Can Address

• Transmission fluid contamination from worn filter media
• Restricted fluid flow caused by a loaded or clogged filter
• Poor sealing at the filter base due to gasket wear
• Incorrect filter thread or base mismatch during service
• Routine transmission maintenance on Caterpillar and Champion Equipment units

Installation Notes and Tips

Confirm the base style before installation and verify that the unit uses Baldwin OB8771, OB8772, or OB8773 bases when applicable. Match the thread size, height, and outside diameter to the existing filter before service. The integral gasket is included, so inspect the sealing surface carefully and replace the filter during scheduled transmission maintenance.

Quality Assurance

Baldwin filtration products are built for demanding equipment service environments and are identified by precise part numbering for accurate replacement selection. Use BT8878-MPG when the application calls for this specific Baldwin transmission oil filter configuration.