Baldwin BT8878-MPG Transmission Oil Filter
OE Quality 60-Day Returns
Baldwin

Baldwin BT8878-MPG Transmission Oil Filter

Brand Baldwin BT8878-MPG
Fits "caterpillar, champion equipment"
Height 11 17/32
Height (mm) 292.9
Integral Gasket [1] included
Notes "can be used wtih {ob8771}, {ob8772}, {ob8773} bases."
Outside Diameter 1 4 23/32
Outside Diameter 1 (mm) 119.9
Per Inch 12
Replaces Champion 45543
Thread 1 3/4
Fits —

Transmission oil filter. Helps keep transmission fluid cleaner for smoother operation.

Integral gasket included. Comes with a gasket for a more complete service replacement.

Baldwin filtration. Trusted filter design from a brand known for replacement parts.

$103.16Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $103.16
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Transmission Oil Filter options

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.

Related reading

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