NV5600 M/T 6TH Gear 24 Tooth . NV5600 Dodge 6th Gear 24-Tooth Features and Benefits: NV5600 Dodge 6th Gear 24-Tooth Details: AAP UDA 4: 50 Grade Type: Regular Application Summary: 1998-2005 Dodge Ram 2500 (6th) (Transmission Code: NV5600 & Transmission Base Gear: 6 & Transmission Control Type: Manual / Qualifier: with 24 Teeth / Note: NV5600 6th Mainshaft Driven Gear, 24 Tooth, Uses 01-05 style synchro rings that are smooth between all six tabs) 1998-2005 Dodge Ram 3500 (6th) (Transmission Code: NV5600 & Transmission Base Gear: 6 & Transmission Control Type: Manual / Qualifier: with 24 Teeth / Note: NV5600 6th Mainshaft Driven Gear, 24 Tooth, Uses 01-05 style synchro rings that are smooth between all six tabs)