Fitment: For Ford 1998-2004 SUPER DUTY F250 F350 F450 EXCURSION 3/4 and 1 ton 4X4 trucks with Dana 50 / 60 straight front axle. ( Front axles with standard leaf spring suspension ONLY.) Features: 1) 1.31″ Spline diameter, 30 Spline, 9.31″ Centerline of u-joint to end of yoke. Use with a 5-806X or SPL55-3X, SPL55-4X U-joints 2) Manufactured from quality steel, using top of the line machining and measuring equipment to ensure each part is manufactured to OEM specifications. Anodized black to protect them from all the dirt, oil, and grease that could potentially break down the tool quality 3) Increase in U-joint size to provides 25% higher yield strength than original U-joints. Upgrade snap ring retention reduces shock load failures Package included: 1 x Outer Axle Shaft - 2002692, 1 x Inner Knuckle Oil Seal - 50491 Description: Part Number: 4C3Z3B387AA, 47750, 2002692 Outer axle shaft is 9.38" inches long, 30 spline, 1.31" spline diameter. Uses 5-806X (Old Numbers 5-732X or Kit SPL55-3X) U-Joint IS NOT INCLUDED IN THIS LISTING. When measuring front axle shafts, all measurements should be taken from center of U-Joint to end of the spline. Application for: For Ford F250 F350 F450 F550 1999-2004 3/4 And One Ton 4x4 Trucks SRW or DRW. For Ford EXCURSIONS 2000-2005 4X4 For FORD DANA 50 OR 60 FRONT OUTER AXLE SHAFT Note: This Shaft Was Only Used In Front Axles With Standard Leaf Spring Suspension NOTE Outer axle shaft is 9.38" inches long, 30 spline, 1.31" spline diameter. Uses 5-806X (Old Numbers 5-732X or Kit SPL55-3X) U-Joint IS NOT INCLUDED IN THIS LISTING. When measuring front axle shafts, all measurements should be taken from center of U-Joint to end of the spline.