
If you’ve ever wondered what the output spline count is on a Np231J, wonder no more! The output spline count is 26. This means that there are 26 teeth on the output shaft, which connects to the driveshaft.
The number of teeth on the output shaft determines how much torque can be transferred from the engine to the wheels. A higher number of teeth results in more torque being transferred, while a lower number of teeth results in less torque being transferred.
The Output Spline Count on a Np231J is 30. This gives the transmission more strength to handle the increased torque output of the engine, while also providing smoother engagement and disengagement of the clutch.
Np231 Output Spline Count
If you’re looking to replace or upgrade the Output Shaft on your NP231 transfer case, it’s important to know the spline count. The NP231 Output shaft is a 30 spline shaft that is found in many Jeep Wrangler models. This guide will help you identify which output shaft you need so that you can get back on the trails as soon as possible!

Credit: www.quadratec.com
How Many Spline is a Np231 Transfer Case?
A spline is a grooved shaft that meshes with a mating gear in order to transmit power or motion between them. In the case of a transfer case, the number of splines on the input shaft (coming from the transmission) will match up with the number of splines on the output shaft (going to the front and rear differentials). There are numerous types and sizes of splines, but for a NP231 transfer case, there are typically 30-32 splines on both the input and output shafts.
How Many Splines Does a Th350 Output Shaft Have?
If you’re wondering how many splines are on a TH350 output shaft, the answer is 26. This number of splines is necessary to match up with the input shaft on most aftermarket torque converters. The original equipment converter that came with your vehicle likely has a different number of splines (30), so be sure to check before ordering a new one!
How Many Splines Does a T56 Output Shaft Have?
The T56 output shaft has 26 splines.
How Many Splines Does a 4Cyl T Case Input Have?
Assuming you are talking about a 4WD transfer case, they will have either 23 or 32 splines. If it is 2WD, then it will have 6 or 10 splines.
Upgrading my NP231 transfer case to a 31-spline input shaft Part 1
Conclusion
The Output Spline Count on a Np231J is 20. This means that there are 20 splines on the output shaft of the transmission. The higher the number of splines, the more torque the transmission can handle.