6 material differences · fewer than 12

Tractor oneBührer OP-17 Standard (A)1969–1975No measured PTO figureTractor twoInternational Harvester 5041961–1968No measured PTO figure

Which should you choose?

Read our verdict on the OP-17 Standard (A) and the 504 → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.

6 material differences · 4 fields identical or within 5%, which is not counted as material

Bührer OP-17 Standard (A) and International Harvester 504, field by field
Field	OP-17 Standard (A)	504	Gap
Engine
Engine power, claimed claimed	45.3 hp	45.3 hp	—
Engine declared	PERKINS 203 U (AD 4.203)	INTERNATIONAL HARVESTER C-153	differs
Displacement declared	3.33 L	2.49 L	+33% OP-17 Standard (A)
Maximum torque declared	153 lb·ft · 208 N·m	—	—
Transmission
Top speed declared	15.5 mph · 25 km/h	18.6 mph · 30 km/h	+20% 504
Clutch declared	—	pedal-operated dry single-plate clutch	—
Hydraulics & hitch
Pump flow declared	—	12.0 gpm · 45.5 L/min	—
Rear PTO speeds declared	540 rpm	540 rpm	—
Weight & dimensions
Unladen weight declared	4,652 lb · 2,110 kg	4,458 lb · 2,022 kg	—
Wheelbase declared	79.9 in · 2,030 mm	73.0 in · 1,854 mm	+9% OP-17 Standard (A)
Length declared	126.8 in · 3,220 mm	132.8 in · 3,372 mm	—
Width declared	64.6 in · 1,640 mm	83.0–96.5 in · 2,108–2,451 mm	differs
Height, over the steering wheel declared	65.0 in · 1,650 mm	78.0 in · 1,981 mm	+20% 504
Fuel tank declared	—	90.0 qt · 85.2 L	—

Source

Source