Baldwin BT251 Engine Oil Filter
OE Quality 60-Day Returns
Baldwin

Baldwin BT251 Engine Oil Filter

Brand Baldwin BT251
Contains Anti-drainback valve;8 psid by-pass valve
Fits "ford, oliver tractors"
Height 7 1/8
Height (mm) 181
Integral Gasket {g381-a}
Notes Can be used with {ob40079} base.
Outside Diameter 1 3 11/16
Outside Diameter 1 (mm) 93.7
Per Inch 16
Replaces Ford d2nn-6714-c
Thread 4-mar
Fits —

Anti-drainback valve. Helps keep oil in the filter to support quicker pressure on startup.

By-pass valve. Opens at 8 PSID to maintain oil flow when the filter loads up.

Integral gasket. Includes gasket {G381-A} for a more complete filter replacement.

$22.50Free 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 $22.50
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 Engine Oil Filter options

Baldwin BT251 Engine Oil Filter

The Baldwin BT251 is an engine oil filter built for Ford and Oliver tractor applications that call for a 4-Mar thread and the listed dimensions. It includes an anti-drainback valve and an 8 PSID by-pass valve to support oil flow control during start-up and under restriction.

Key Features

  • Part number BT251 for Ford and Oliver tractor oil filter applications
  • Anti-drainback valve helps retain oil in the filter after shutdown
  • 8 PSID by-pass valve specification
  • Height: 7 1/8 in. (181 mm)
  • Outside diameter: 3 11/16 in. (93.7 mm)
  • Thread: 4-Mar
  • Integral gasket: G381-A
  • Can be used with OB40079 base
  • Replaces Ford D2NN-6714-C

Detailed Description

Baldwin BT251 is an engine oil filter specified for Ford, Oliver Tractors equipment where the listed thread, gasket, and size requirements match the original setup. The anti-drainback valve helps keep the filter full of oil after engine shutdown, while the 8 PSID by-pass valve provides a defined opening point when flow restriction increases. If you are sourcing a Ford tractor oil filter replacement or an Oliver Tractors engine oil filter by part number, BT251 gives you a direct reference point for matching the application.

This part cross-references Ford D2NN-6714-C for the same application.

What It Helps Address

  • Oil filter replacement for Ford tractor maintenance
  • Oil filter replacement for Oliver Tractors service work
  • Loss of oil retention after shutdown
  • Filter fitment issues caused by incorrect thread or gasket size
  • Replacement needs for a Ford D2NN-6714-C equivalent filter

Installation Notes and Tips

Verify the 4-Mar thread, 7 1/8 in. height, 3 11/16 in. outside diameter, and G381-A integral gasket before installation. Baldwin notes that BT251 can be used with OB40079 base. Confirm the engine’s filter mount and service specifications against the original part number before final installation.

Quality Assurance

Baldwin filters are built for heavy-duty filtration applications and are commonly selected for agricultural and industrial equipment service. Match the listed dimensions and replacement reference to confirm proper fit for Ford and Oliver Tractors applications.

Related reading

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