4-1-1133-2 Companion Flange Yoke Bore: 1.625 – Keyway: 0.375 – Pilot: 3.750 F

4-1-1133-2 Companion Flange Yoke

The 4-1-1133-2 is a companion flange yoke with a 1.625-inch bore, 0.375-inch keyway, and a 3.750-inch female pilot (3.750F). The bolt circle diameter is 4.750 inches with 4 bolt holes, outside diameter is 5.880 inches, and the through-hole measures 2.500 inches. The product notes indicate a rectangular hole configuration of 3.053 x 3.639 inches for bolt positioning.

Specifications

• Part Number: 4-1-1133-2
• Bore: 1.625 in
• Keyway: 0.375 in
• Pilot Diameter: 3.750 in (female)
• Hub Diameter: 3.750 in
• Bolt Circle Diameter: 4.750 in
• Bolt Holes: 4
• Outside Diameter: 5.880 in
• Through Hole: 2.500 in
• Hole Configuration: 3.053 in x 3.639 in

When fitting the 4-1-1133-2, confirm the output shaft diameter is 1.625 inches and that the shaft carries a 0.375-inch keyway for positive torque transfer. The 3.750-inch female pilot registers over the output shaft housing; verify the housing male pilot is within tolerance for this bore. The 4.750-inch bolt circle with 4 holes at the 3.053 x 3.639 rectangular pattern must match the mounting face on the transmission, transfer case, or axle.

The 2.500-inch through-hole on the 4-1-1133-2 accommodates a shaft retaining nut or end cap. The 5.880-inch outside diameter defines the swing clearance of the flange. Verify the companion flange will mate with the driveshaft yoke bolt pattern before installation.