All H233B Axles aren’t the same, they do come in a few different widths but the main difference in the differential itself, is the spline count and diameter of the axle shafts. The H233B comes in both 1.26″ / 31 Spline and 3.31″ / 33-spline versions. however the gear sets and 3rd member housings are interchangeable.
Here is a little bit better breakdown of the H233B and which trucks it came in:
Pathfinder / Terrano: Late 80’s to 1995 – 1.26″/31-spline
Pathfinder: 1996 to 2004 – 1.31″/33-spline
Hardbody Pickup V6/4×4: Late 80’s to 1997 – 1.26″/31-spline
Frontier V6/4×4: 1998 to 2004 – 1.31″/33-spline
Xterra: 2000 to 2004 – 1.31″ / 33-spline
Patrol: Late 80’s to Present – Front 1.26/31-spline & Rear 1.31 /33-spline
If you have additional information on these applications, please contact us.

This H233B Nissan Axle Housing accepts the H233B low pinion differential 3rd member and has Dana 60 Kingpin Inner ‘C’. The housing may be built to your specifications as far as pinion angle, caster, width and differential offset. Being that these axle housings are built to order, there is a 4 week turn around time.