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Silver spin-on fuel filter canister with drain hose adapter and integral gasket

Baldwin Filters

Baldwin Filters BF781 Fuel Filter Spin-On 25 micron

SKU CH-18E5-DF2HP

Spin-on fuel filter rated at 25 micron with integral gasket and drain hose adapter included

  • 25 micron rating traps fine contaminants
  • Spin-on design enables quick filter changes
  • Integrated drain simplifies water removal
  • Integral gasket ensures reliable sealing
  • 1-12 thread fits compatible fuel systems

Baldwin BF781 Fuel Filter — Primary Spin-On

The Baldwin BF781 is a primary spin-on fuel filter rated at 25 micron. It uses a 1-12 thread size and measures 6 1/8 inches in height and length with a 3 11/16 inch outside diameter. An integral gasket and drain hose adapter are included for installation.

For diesel systems needing primary filtration

This filter suits engines requiring a primary spin-on unit with a 25 micron rating and a 1-12 thread. It is not for applications needing a finer micron rating, a different thread size, or a secondary filter position. Systems without a drain port requirement may not use the included adapter.

Fits fuel lines with 1-12 threads

The 1-12 thread mates directly to compatible filter heads or mounting bases. The integral gasket seals without a separate ring, and the drain hose adapter allows water removal without extra fittings. Clearance for the 6 1/8 inch height and 3 11/16 inch diameter is required in the engine compartment.

How it compares

Measured against everything we stock in Pumps, Sprayers & Pump Accessories, at today’s prices. Recalculated every night.

Price $19.99
Cheaper than about 70% of the 962 comparable items (median $38.99).

Specifications

Product
Brand nameBALDWIN FILTERS

Questions about this item

Does my engine need a 1-12 thread port for the BF781 to screw on?

Yes — the filter uses a 1-12 thread so the mounting port must match that size.

Will the 25 micron element restrict flow on an older low-pressure fuel pump?

The 25 micron rating is designed for primary filtration and works with standard low-pressure pumps.

How can I confirm the integral gasket sealed after I spin the filter on?

Start the engine and check the drain hose adapter and gasket area for any fuel leaks.

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