TractorDex
TractorDexIndex
International HarvesterUSACatalog archive

International Harvester T-9

Production years: 1940–1956

Compare with other modelsValue machine
Engine horsepower
45 HP
—
Displacement
5.5 L
4-cylinder engine
Drive and chassis
Tracks (Crawler)
Gear (5F/1R)
Operating weight
N/A
—

Sources and field evidence

Catalog Archive: Baseline specifications compiled from historical manufacturer archives and equipment registries. Laboratory test report verification in progress.

International Harvester T-9
VLM Verified Authentic
International Harvester T-9

Ask TractorDex AI Copilot About T-9

Instant technical consultation powered by heavy machinery knowledge

Engineering & Capability Benchmark

Specific output, tractive ratio, and segment percentile

Compact / Sub-Compact Yard
Global Tractor Fleet Power SpectrumTop 82% of all indexed machinery
Compact (20 HP)Utility (100 HP)Row-Crop (250 HP)Titans (600+ HP)
Specific Output
8.2 HP/L
Aspiration: Unknown
Traction Ratio
—
Agile transport & crop care
PTO Efficiency
—
Mechanical driveline
Hydraulic Flow
Standard
Auxiliary implement ports

Engine and power specifications

Engine model
International Harvester
Fuel type
Gasoline
Rated horsepower
45 hp
Rated PTO Power
N/A (International Harvester specification)
Drawbar Power @ Rated Engine Speed
40.59 hp (Nebraska OECD Test 2218)
Cylinders
4
Displacement
5.5 L (334.5 ci)
Bore / stroke
4.40x5.50 inches 112 x 140 mm
Rated RPM
1400 RPM
Crankcase oil capacity
11 qts (~10.4 L)
Coolant capacity
48 qts (~45.4 L)

Maintenance picks for the T-9

Oil capacity 11 qts — match the filter before you drain.

Transmission and chassis specifications

Transmission type
Gear (5F/1R)
Gears (forward / reverse)
5 forward / 1 reverse
Drive system
Tracks (Crawler)
Wheelbase
N/A
Front tire
N/A
Rear tire
N/A
Hydraulic flow
N/A
Rear hitch
N/A
ASABE EP496 Engineering Matcher

Implement Draft & Ballast Matcher

Simulate draft resistance, drawbar power transfer, and optimal axle weight distribution for International Harvester T-9.

Overloaded / Wheel Slip Alert(156%)
CAD DRAFT SCHEMATIC • Wide-Span Field Cultivator
SOIL: Medium Tilled LoamDEPTH: 4"SPEED: 7 MPH156% LOAD
SOIL SURFACE (0.0")SUB-SURFACE PLOW PAN (~14")45 HP◄ 3,129 LBS DRAFT4" DEPTH
DRAWBAR DEMAND: 58.4 HPWIDTH / SIZE: 18 ft Width
ASABE D497.7 Tillage Specific Resistance Formula
Implement Size (ft Width)18 ft Width
18 ft WidthDefault: 4270 ft Width
Tillage / Seeding Depth4 inches (10 cm)
2"Target: 4"6"
Target Operating Field Speed7.0 mph (11.3 km/h)
5 mphRated: 7 mph9 mph
Engine Power Demand vs Rated Output70.4 HP / 45 HP Rated
0%55% (Min Load)60-85% (Sweet Spot)100% (Cap)
Draft Force
3,129 lbs
Drawbar Power
58.4 HP
Target Slip
8% - 12%
Axle Ballast Balance (Twin Track Rubber Belt )Calibrated for Wide-Span Field Cultivator (100 lbs/HP standard)
Target: 4,500 lbs
Front Axle: 62%Rear Axle: 38%
1,266 kg (2,790 lbs)776 kg (1,710 lbs)
Ballast Adjustment vs Base:+225 lbs (102 kg)
Hourly Gasoline Burn
3 gal/h
11.4 L/hr (est. $11/h)
Hydraulic Fan Status
Standard Draw
No fan req

Engine demand (70.4 HP) exceeds rated power (45 HP). Reduce working speed by 1.0-1.5 mph or reduce working width.

Catalog archival serial-number ranges

17 production years
Production yearStarting serial #Ending serial #Assembly plant
1940#501#2,173Factory not specified
1941#2,174#4,163Factory not specified
1942#4,164#8,663Factory not specified
1943#8,664#11,911Factory not specified
1944#11,912#18,246Factory not specified
1945#18,247#23,691Factory not specified
1946#23,692#26,288Factory not specified
1947#26,289End of runFactory not specified
1948#19,512#32,972Factory not specified
1949#32,973#36,926Factory not specified
1950#36,927#40,397Factory not specified
1951#40,398#44,709Factory not specified
1952#44,710#47,847Factory not specified
1953#47,848#52,598Factory not specified
1954#52,599#56,207Factory not specified
1955#56,208#58,818Factory not specified
1956#58,819End of runFactory not specified

Instant Used Market Valuation Projector

Algorithmic resale estimate for International Harvester T-9 (1940)

Full Appraisal Tool
Operating Meter Hours3,200 hrs
Mechanical & Physical Condition
Empirical model calibrated against dealer & auction lots
Estimated Fair Market Value
$2,032
Basis: 45 HP • 86 yrs old
Auction / Wholesale
$1,666 – $1,869
Dealer Retail Asking
$2,134 – $2,398
3-Year Projected Resale Curve~5% annual retention decay
Year 2027
$1,930
Year 2028
$1,834
Year 2029
$1,742

Direct Segment Rivals & Showdowns

Head-to-head match-ups calibrated by horsepower and era

Case+5 HP
L
50 HP
Cletrac+5 HP
DG
50 HP
McCormick-Deering+5 HP
W-9
50 HP

Looking for a used International Harvester T-9?

Browse live listings and auction results near you.

International Harvester

USA • 253 Models

The International Harvester Company (IH or International) was a pioneering American industrial powerhouse founded in 1902 through the merger of five leading agricultural equipment manufacturers, including the McCormick Harvesting Machine Company and Deering Harvester Company. This strategic consolidation created one of the largest agricultural machinery manufacturers in the world, with an immediate impact on the industry. International Harvester quickly became renowned for its innovative Farmall tractors, which revolutionized farming practices with their versatility and efficiency. The company's product line expanded to include the iconic Cub Cadet tractors, as well as the consolidated McCormick-Deering line that carried forward the legacy of its founding companies. Beyond its dominance in the agricultural sector, International Harvester was a major player in commercial vehicles, producing the popular Scout and Travelall automobiles, along with a wide range of trucks. The company's diverse portfolio also included lawn and garden equipment and household appliances, making it a household name across America. However, the 1980s brought significant challenges as the company faced financial difficulties. In response, International Harvester began divesting its divisions, starting with the sale of its construction equipment division to Dresser Industries in 1982. The pivotal moment came in 1984 when the farm equipment division was acquired by Tenneco's subsidiary, Case Corporation, leading to the formation of the Case IH brand. Today, Case IH is part of CNH Industrial, while the European division lives on as McCormick Tractors, owned by Italy's ARGO SpA. By 1986, International Harvester had transformed into Navistar International, focusing exclusively on trucks and engines.

View Full International Harvester Lineup