T56 M/T 5TH Countershaft Gear 58 Tooth . 5th Gear Countershaft T56 Countershaft Features and Benefits: 5th Gear Countershaft T56 Countershaft Details: AAP UDA 4: 50 Grade Type: Regular Application Summary: 2013-2014 Srt Viper (5th Drive) (Transmission Code: T56 & Transmission Base Gear: 6 & Transmission Control Type: Manual / Qualifier: Replaces Oe Part Number(s) 1386-086-004, 12523249, 5093273AA, with 58 Teeth / Note: T56 5th Counter Shaft Drive Gear, 58 Tooth) 2004-2006 Dodge Ram 1500 (5th Drive) (Transmission Code: T56 & Transmission Base Gear: 6 & Transmission Control Type: Manual / Qualifier: Replaces Oe Part Number(s) 1386-086-004, 12523249, 5093273AA, with 58 Teeth / Note: T56 5th Counter Shaft Drive Gear, 58 Tooth) 1992-2010 Dodge Viper (5th Drive) (Transmission Code: T56 & Transmission Base Gear: 6 & Transmission Control Type: Manual / Qualifier: Replaces Oe Part Number(s) 1386-086-004, 12523249, 5093273AA, with 58 Teeth / Note: T56 5th Counter Shaft Drive Gear, 58 Tooth) 1994-2002 Chevrolet Camaro (5th Drive) (Transmission Code: MM6 & Transmission Base Gear: 6 & Transmission Control Type: Manual / Qualifier: Replaces Oe Part Number(s) 1386-086-004, 12523249, 5093273AA, with 58 Teeth / Note: T56 5th Counter Shaft Drive Gear, 58 Tooth) 1994-2002 Pontiac Firebird (5th Drive) (Transmission Code: MM6 & Transmission Base Gear: 6 & Transmission Control Type: Manual / Qualifier: Replaces Oe Part Number(s) 1386-086-004, 12523249, 5093273AA, with 58 Teeth / Note: T56 5th Counter Shaft Drive Gear, 58 Tooth)