In 1971 the 10-series light-duty trucks replaced the D-series. The styling was unchanged except for a new mesh grille, like that of the Scout, and revised shape and placement of side marker lights. There were no significant mechanical changes. In mid-1971 International made modifications to some engines to adapt them to new no-lead and low-lead fuels. The relatively low-compression V-304 and V-345 V8s needed few changes and maintained their power outputs. The 6-232 had to be detuned a little, dropping the hp rating to 135. Conversely, the big V-392 V8 was increased in power, to 253 gross hp and 236 net hp. In 1972 the light-duty series was given a new grille made of five thin horizontal bars split by a vertical center divider and extending around and beyond the headlights. The 1110 model got rear-wheel antilock brakes. In 1973 all engines were detuned for operation on unleaded gasoline and only net hp ratings were advertised. The new ratings were as follows: 6-258 6-cylinder - 113 hp; V-304 V8 - 137 hp; V-345 V8 - 144 hp (156 with dual exhaust); V-392 V8 - 179 hp (193 with dual exhaust). In mid-year the engine net hp ratings were reduced further to: 6-258 – 102; V304 – 126 (140 with dual exhaust); V345 – 132 (144 with dual exhaust); V392 – 168 (189 with dual exhaust).
IHC Auto Buggy·IHC Auto Wagon·International "letter" series 1915-23·International "number" series 1921-23·International "number" series 1924-27·10 series·54-104C series·100-500 series·210-230 series·400-900 series·1000-1500 series·3000 series·4000 series·5000 series·5000i series·8000 series·8100-8200-8300 series·9000i series·9100-9200-9400 series·9300 series·9370 series·9600-9700-9800 series COE·A series 1930-35·A series 1957-58·A series 1966·A series heavy-duty 1932-41·AC series·ACO Sightliner series·Auto Wagon·B series 1931-35·B series 1959-62·B series 1967·BC series·C series 1934-37·C series 1961-62·C series 1968·C/D/DB/DC 300-400 series·Cargostar series·Cargostar-B series·Citystar series·CO/DCO 400 series COE·CO/VCO/DCO series tilt-cab·CO-4000 series·CO-8190 fire engine·COF-5370·COF5470-COF5870 series oil field trucks·CO-Loadstar series·CONCO series·CO-Transtar series·CXT·D series 1937-40·D series 1965·D series 1969-70·DCF-400M mixer·DF-8008 oil field truck·Durastar series·E·Eagle 9900·F-8500M mixer·Fageol Vans·FC series stripped chassis·Fleetstar series·Fleetstar-A series·FTCO fire engine·HS Series·K series·KB series·L series·L/LD 300-400 series·International LC series COE·LC/LCD 400 series COE·LC-195 Tiltocab COE·Loadstar series·Lonestar·M series·Metro series·Metroette series·Motor Home Chassis·MS series·MXT·One-Hundred series·Payhauler series·Paystar 5000 series·R series·R/RD 300-400 series·RC series COE·RC series Tiltocab COE·RC/RDC 400 series COE·RD-H series·RE series·RXT·S-series 1921-30·S series 1956-57·S1600-S2100 series·S2200-S2300-S2500-S2600 series·SC series COE·Schoolmaster series·Scout·Scout II·Scout Terra·Scout Traveler·Transtar 400 series·Transtar 400M mixer·Transtar 4270-4370 series·Transtar II series·Travelall·Travelette series·Unistar·V series·W series "Westcoaster" 1936-49·W series 1930-35·Wagonmaster·Workstar series·XL series·