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BALDWIN · Fuel Water Separator Filter

BF1277-SPS

FWS Spin-on w/Drain, Sensor Port and Reusable Sensor

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Call either store for your current price.
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Stock checked September 11, 1:46 PM Eastern. Call before travelling so we can confirm what is still available.

THE DETAILS THAT MATTER

FILTER SPECIFICATIONS.

Filter type
Fuel/Water Separator Spin-on with Drain, Sensor Port and Reusable Sensor
Thread
M85 x 2.0
Outside diameter
4 21/32 in.
Outside diameter (mm)
118.3
Length
11 5/8 in.
Length (mm)
295.3
Contains
Sensor Port Thread: M14 x 2.0
Gasket
[1] Included
Manufacturer part number
BF1277-SPS
GTIN
00791440059337

For service, retain reusable sensor from BF1277-SPS, and attach to BF1277-SP.

Baldwin replacement references: Caterpillar 3964605; Cummins 3101872, 4010651; Fleetguard FS1040

Baldwin PIES August 20, 2026 · Baldwin Product Guide July 24, 2026.

START WITH THE NUMBER YOU HAVE

CROSS-REFERENCE NUMBERS.

Baldwin’s reference lists the numbers below for BF1277-SPS. Keep any size, quantity or application conditions with the match. A cross-reference alone does not confirm fit on your equipment.

12 manufacturer reference rows

Brand / manufacturerReference numberCondition / noteReference qty
BALDWIN FILTERSBF1277SPS0
CARQUEST962951
CHAMPION LABORATORIESLFF10071
CUMMINS31018721
CUMMINS40106511
DONALDSONFFP5510471
DONALDSONP5510471
FLEETGUARDFS10401
GRAINGER2LAA41
HASTINGSFF1151SPS1
JURA (HIFI)SN405491
LUBER-FINERLFF10071

Source: Baldwin Specs & Interchange · July 27, 2026. Reference quantity is part of the manufacturer’s cross-reference, not store stock.

CHECK THE EQUIPMENT. CHECK THE ENGINE.

APPLICATIONS & EQUIPMENT.

Cummins ISX, Signature 600 Engines

Baldwin Product Guide summary. This description does not establish fit for every model from each manufacturer.

Call with your equipment model, engine and the number on the existing filter. Our counter will help verify the application.

A REAL COUNTER. CLOSE TO HOME.

YOUR LOCAL FILTER PEOPLE.

Bring the number off your old filter, or your equipment and engine details. We’ll help check the match.