2003 Nissan Xterra Ring and Pinion Set 4WD - Nissan M226/ Dana 44 Rear w/ 12 Bolt Cover - Ring and Pinion Set - 3.73 Ratio - 24 Spline Pinion - 10 Bolt Ring Gear - Requires 24 spline yoke when replacing 29 spline gear used in '04-'07 applications. - Rear guaranteed to replace your current 2003 Nissan Xterra Ring and Pinion Set 4WD - Nissan M226/ Dana 44 Rear w/ 12 Bolt Cover - Ring and Pinion Set - 3.73 Ratio - 24 Spline Pinion - 10 Bolt Ring Gear - Requires 24 spline yoke when replacing 29 spline gear used in '04-'07 applications. - Rear. 2003 Nissan Xterra Ring and Pinion Set comes new OEM 2003 Nissan Xterra Ring and Pinion Set aftermarket new 2003 Nissan Xterra Ring and Pinion Set of remanufactured 2003 Nissan Xterra Ring and Pinion Set 4WD - Nissan M226/ Dana 44 Rear w/ 12 Bolt Cover - Ring and Pinion Set - 3.73 Ratio - 24 Spline Pinion - 10 Bolt Ring Gear - Requires 24 spline yoke when replacing 29 spline gear used in '04-'07 applications. - Rear.