1303-41 – Transmission Yokes – 21 X 1.100 Splines – 1351-20 Series – 1.495″ Hub Dia

Toyota uses the 1350 series U-joint on a range of RWD cars and trucks including Supra, Land Cruiser, and Hilux variants -- the 21-spline x 1.100" profile at this hub diameter (1.495") corresponds to the larger transmission output found on 4-cylinder and inline-6 Toyota applications. This is a different spec from the 2351-20 series yokes (2303-21, 2303-22) -- the 1303-41 is 1350 series, not the metric Toyota-specific series.

• Series: 1350 -- 1.188" cap diameter, a step up from the 2351-20 metric series in torque capacity
• Spline: 21 x 1.100" -- Toyota-specific spline profile; confirm against the transmission output shaft
• C/U-joint to end: 6.125" -- shared with 1303-23; same length for both Toyota yoke variants in this series
• Hub: 1.495" -- match to the Toyota output seal bore; same hub OD as the 2303-21 yoke, but a different series cap bore

When upgrading from a 2351-20 series yoke to a 1350 series yoke on a Toyota, both the driveshaft tube yoke and U-joint must also be upgraded to 1350 spec -- the 2351-20 cap bore will not accept a 1350 series joint.