2-3-12051X Tranny Yoke 1330 Series Hub: 1.500 Splines Count: 26/27 GM

2-3-1205XU 1330 Series Transmission Yoke GM TH700 Chromoly

The 2-3-1205XU is a 1330 series transmission yoke for GM TH700 applications, forged in chromoly steel with a black oxide finish. The spline spec is 26/27 x 1.176" diameter, and the hub diameter is 1.500". Centerline-to-end (CJ-to-end) is 6.750" and the counterbore diameter is 1.218".

Specifications

• Part Number: 2-3-1205XU (OEM Ref: 2-3-12051)
• Series: 1330
• Application: GM TH700
• Splines Count x Diameter: 26/27 x 1.176"
• Hub Diameter: 1.500"
• CJ to End: 6.750"
• Counterbore Diameter: 1.218"
• Material: Forged Chromoly Steel
• Finish: Black Oxidized

When fitting the 2-3-1205XU, verify the TH700 output shaft carries the correct 26/27-count spline profile at 1.176" diameter. The 1.218" counterbore diameter must clear the transmission tail shaft snout — measure the snout OD before installation. The 6.750" CJ-to-end dimension determines the working geometry of the first driveshaft section. The chromoly construction and black oxide finish make this yoke suitable for performance and high-stress TH700 builds. The 1330 series is a step below 1350 in torque capacity; for higher-output applications, confirm the series matches the U-joints and slip yoke on the driveshaft. The 2-3-1205XU is also referenced under OEM part number 2-3-12051.