N3-83-1606X – Cv Flange Yoke – Ball Stud Dia 0.5″ – Bolt Circle Dia 3.97″ – Bolt Hole Dia 0.46″

N3-83-1606X Neapco 1350 Series CV Flange Yoke

The N3-83-1606X is a Neapco 1350 series CV flange yoke, light-duty (LD) class. It features a 3.97" bolt circle diameter with a 3.125" pilot diameter (type F), a 0.5" ball stud diameter, and a bolt hole diameter of 0.46". The CL-to-face dimension is 1.625". Lube port: none.

Specifications

• Part Number: N3-83-1606X
• Brand: NEAPCO
• Series: 1350
• Class: LD
• Bolt Circle Diameter: 3.97"
• Pilot Diameter: 3.125" (Type F)
• Ball Stud Diameter: 0.5"
• Bolt Hole Diameter: 0.46"
• CL to Face: 1.625"
• Lube: No

When fitting the N3-83-1606X, verify the companion flange bolt circle matches 3.97" and the pilot bore is 3.125". The type F pilot registers against the flange face — confirm OD seating before torquing. The 1350 series U-joint interface must be confirmed against the driveshaft series at both ends of the assembly.

The 1350 series is a heavy-duty series used in performance and commercial light truck applications, step above the 1310 in the torque ladder. The N3-83-1606X is a Neapco OEM-equivalent CV flange yoke for this series. The 3.97" bolt circle is slightly smaller than the 3.937" found on the N3-83-072X (also 1350, Jeep Rubicon application) — measure the companion flange bolt circle precisely before ordering.

The primary fitment dimensions for the N3-83-1606X are the 3.97" bolt circle and the 3.125" pilot diameter. Confirm both match the companion flange. The N3-83-1606X does not include a lube fitting — inspect the CV ball socket at service intervals for wear and play.