2-2-489 | Flange Yoke 1330 Series , Holes: 4 x 0.438 | Bolt Circle Dia : 3.750 , Pilot: 2.750M 

2-2-489 UDS 1330 Series Flange Yoke 4-Bolt 3.750 Bolt Circle

The 2-2-489 is a 1330 series flange yoke manufactured by UDS. It features 4 bolt holes at 0.438" diameter on a 3.750" bolt circle with a 2.750" male pilot diameter. The CJ-to-flat dimension is 1.562". This yoke requires a 1330 series universal joint.

Specifications

• Part Number: 2-2-489
• Brand: UDS
• Series: 1330
• Bolt Holes: 4 x 0.438"
• Bolt Circle Diameter: 3.750"
• Pilot Diameter: 2.750" (M)
• Pilot Type: Male
• CJ to Flat: 1.562"
• Notes: Requires a 1330 series universal joint

When fitting the 2-2-489, confirm the companion flange carries a 3.750" bolt circle with four 0.438" holes and a 2.750" female pilot (socket) to accept the male pilot on this yoke. The male pilot locates the yoke concentrically on the companion flange — a worn or mismatched female pilot bore will result in runout at this joint. Bolt hole size of 0.438" determines the fastener diameter; use hardware that fills the hole to minimize fretting.

The 2-2-489 is specified for use with a 1330 series U-joint. The 1330 series uses different cap dimensions than the 1310 or 1350 — confirm the U-joint installed at this position matches 1330 specifications. The 1.562" CJ-to-flat dimension sets the working clearance between the joint and the flange face. The 3.750" bolt circle is a common mid-range transfer case and axle flange dimension; cross-reference against the specific output flange part drawing where accuracy is critical.