1S5440 Dowel Fits Caterpillar Models

One New Aftermarket Replacement Dowel Pin for Caterpillar (Cat) Engines and Equipment

This steel dowel pin is used in the mechanical fuel injection pump governor assembly on Caterpillar diesel engines, including the 3304B, 3306, 3306B, 3306C, 3406B, and 3406C. It locates and retains components within the governor carrier and flyweight assembly, ensuring precise alignment during operation.

Specifications

• Part Type: Dowel Pin (Fuel Pump / Governor Assembly)
• Material: Steel
• Pin Diameter: 4.755 mm (0.187 in)
• Pin Length: 30.15 mm (1.187 in)
• End Type: Crown (both ends)
• Weight: 0.01 lbs

Compatible Models

Caterpillar Engines: 3304, 3304B, 3306, 3306B, 3306C, 3406B, 3406C, 3408, 3408B

Caterpillar Construction and Earthmoving Equipment: 815B, 815F, 816B, 816F, 825C, 825G, 826C, 826G, 826G II, 966E, 966G, 970F, 973, 973C, 578, 583R, 587R, 572R

Caterpillar Road Equipment: PM-465, RM-250C, RM-350, RM-350B, RR-250, RR-250B, SM-350, SS-250, SS-250B

Caterpillar Underground / LHD Equipment: R1300G

Note: This dowel pin fits multiple Cat engine and equipment platforms. Verify your fuel pump assembly part number before ordering to confirm correct application.

Replaces Part Number(s):

1S5440, 1S-5440

Aftermarket Interchange Numbers

Interstate-McBee: M-1S5440

New aftermarket replacement part - not remanufactured, not used.