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Tractor · 1958Unverified

Oliver 550

Name: Oliver 550
Brand: Oliver

Oliver 550 — Utility tractor · 41 hp. Reference specifications; pending source verification.

The Oliver 550 is a tractor model with a rated power output of 41 hp, positioned at the lower end of its class. It was manufactured from 1958 to 1975 and features a 4-cylinder diesel liquid-cooled engine, paired with two-wheel drive and a 6-speed gearbox. The operating weight of the Oliver 550 ranges from 3070 to 3730 pounds. It is suitable for operations covering up to 200 acres.

Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.

Rated power

41 hp

Max power

30.9 kW

Weight

3070 to 3730 pounds

Catalogue coverage

Variants represented

Richest spec table

100 rows

Recorded power

41 hp

Transmissions

6-speed gear

Production years

1958-1975

Verified variants

No linked source document is currently displayed; verify critical figures with the manufacturer or dealer.

Hover a source tag to verify

Overview

ManufacturerOliverReference

Utility tractorReference

Built in Charles City, Iowa, USAReference

Total built20,368 (Oliver)Reference

Total built3,915 (Cockshutt)Reference

Original price was $4,400 in 1975Reference

During the first year of production the Oliver 550 had the same 2.4L engine as the Super 55.Reference

Two-wheel driveReference

Steeringpower assistReference

Differential mechanical dry disc brakesReference

Open operator station.Reference

Engine

Oliver-Waukesha 2.5L 4-cyl gasolineReference

Oliver-Waukesha 2.5L 4-cyl dieselReference

Drawbar (claimed)26.3 kWReference

Drawbar (tested)26.4 kWReference

Oliver-WaukeshaReference

gasolineReference

4-cylinderReference

liquid-cooledReference

Displacement2.5 LReference

Bore/Stroke92 x 95 mmReference

Air cleaneroil bathReference

Compression7.75:1Reference

Rated RPM2000Reference

Starter volts12Reference

Oil capacity3.8 LReference

dieselReference

Bore/Stroke92 x 95 mmReference

Compression16:1Reference

Max power30.9 kWReference

Max power26.4 kWReference

Max power29.2 kWReference

Max power26.2 kWReference

Transmission

6-speed gearReference

TypegearReference

Gears6 forward and 2 reverseReference

Clutchdry discReference

Oil capacity18.9 LReference

PTO & Hydraulics

PTO (claimed)30.9 kWReference

PTO (tested)30.9 kWReference

Hydraulic system9.5 LReference

Typeopen centerReference

Capacity9.5 LReference

Pump flow19.9 lpmReference

Rear TypeIReference

Rear PTOindependentReference

Rear PTO Type540/1000Reference

Capacities

Fuel49.2 LReference

Dimensions

Wheelbase185 cmReference

Weight3070 to 3730 poundsReference

Front tire6.00-16Reference

Rear tire12-26Reference

Ag front6.00-16Reference

Ag rear12-26Reference

Length304 cmReference

Height (steering wheel)147 cmReference

Height (hood)127 cmReference

Front tread121 to 193 cmReference

Rear tread121 to 193 cmReference

Gas Shipping1392 kgReference

Diesel Shipping1437 kgReference

Operating1691 kgReference

550 Serial Number Location

Serial number plate located on the left side of the Oliver 550, above the foot rest.Reference

550 Serial Numbers

195860501Reference

195972632Reference

196084416Reference

1961111868Reference

1962117541Reference

1963127365Reference

1964140620Reference

1965162265Reference

1966171923Reference

1967186165Reference

1968206095Reference

1969213340Reference

1970222833Reference

1971226965Reference

1972232918Reference

1973238237Reference

1974248375Reference

1975259255Reference

Final259491Reference

FAQ: How to read a serial number table.Reference

Electrical

GroundpositiveReference

Batteries2 (diesel)Reference

Batteries1 (gas)Reference

Battery volts6 (diesel)Reference

Battery volts12 (gas)Reference

Test results

NTTL 697: gasoline 6-speed 2WDReference

NTTL 698: diesel 6-speed 2WDReference

Gasoline 6-speed 2WDMay 11 - 26, 1959Link: Nebraska Tractor Test 697 fileReference

PTO performanceReference

Fuel use12.5 l/hourReference

Drawbar performanceReference

Gear 4 used for power test.Reference

Max pull2334 kgReference

Gear 2 used for pull test.Reference

Diesel 6-speed 2WDMay 13 - 26, 1959Link: Nebraska Tractor Test 698 fileReference

Fuel use10.6 l/hourReference

Max pull2317 kgReference

Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.

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