Tractor reference
John Deere 6R 140
Specifications, maintenance, parts and compatibility reference.
Specification set: United States - Current US / 2026 North America specification Engine and electrical data use the 5 May 2026 Deere price book. US comparison-page values are used for PTO, transmission and hydraulics when available.
Engine
Engine modelJohn Deere PowerTech PSS
Rated engine power140 hp
Maximum engine power154 hp
Rated engine power with IPM160 hp
Maximum engine power with IPM166 hp
Engine displacement4.5 L
Cylinders4
Transmission
Standard transmissionJohn Deere AutoPowr/IVT 25 mph (40 km/h)
Transmission optionsAutoPowr/IVT 31 mph (50 km/h); 24-speed AutoQuad Plus ECO 25 mph (40 km/h) or 31 mph (50 km/h)
PTO
PTO power110 hp
Hydraulics
Standard pump rated output30.1 gpm (114 L/min)
Optional pump rated output40.9 gpm (155 L/min)
Capacities
DEF tank capacity13 L
Electrical
Battery12 V / 174 A
Alternator14 V / 250 A