GM/Chevy NV3500 Getrag 290 5sp Mainshaft 5th Gear 26 Tooth 290-18B MG5, HM290 NV3500 This gear is in stock now! Ready to ship!! If you need any additional parts, Rebuild kit, input shaft, cluster please see our store. If you need help figuring out which gear you need please feel free to contact us; we will be glad to direct you in the right direction!!!