# List of International Harvester/Navistar engines

The International Harvester Company (IHC) has been building its own proprietary truck engines since the introduction of their first truck in 1907. International tended to use proprietary diesel engines. In the 1970s, IHC built the DVT 573 V-8 diesel of 240 and 260 hp (179 and 194 kW) but these were not highly regarded and relatively few were sold. Their DT 466 engine started in 1974 and was very successful.

## IHC engines

The first IHC "Highwheeler" truck had a very simple air-cooled horizontally opposed two-cylinder engine with a 5-inch (130 mm) stroke and a 5-inch (130 mm) bore, and produced around 18–20 hp (13–15 kW). Displacement was 196 cubic inches (3.2 L). In 1915 a new L-head water-cooled 201 cubic inches (3.3 L) inline-four engine appeared. While International's own engines underwent constant developments, the pace of truck production in the twenties was such that others' engines (from Waukesha, Buda, and Lycoming for instance) had to be installed in some parts of the range.
International Harvester's first in house six-cylinder engines appeared in some of the 1926 S-series trucks, seemingly a response to market pressures rather than to any particular need for such a layout. In 1928, a new heavy range of trucks (the HS-series) built around a series of engines from Hall-Scott appeared. These engines were used by IHC for some heavy-duty applications until 1935, although their own large engines (525 cu in (8.6 L) FBD and 648 cu in (10.6 L) FEB) had appeared in 1932. The medium-duty 1930 A-series trucks received the all-new 278.7 cu in (4.6 L) FB-3 six-cylinder engine, with overhead valves and seven main bearings. This was complemented by larger versions of the same engine and was built until late 1940 (as the FBB), the line-up being expanded downward by the smaller FA-series (later FAB) in 1933.
The HD inline-sixes, later to become the first in International's long running "Diamond" series, first appeared in the C-30 truck of 1934. Available in three different displacements (see table), they were renamed "Green Diamond" in late 1940 for the 1941 model year after a number of detail improvements. This year also brought the new "Blue Diamond" (FAC) and "Red Diamond" (FBC) engines. A post-war version of the 269 cubic inches (4.4 L) Blue Diamond became the "Super Blue Diamond" when installed in the post-war medium L-line trucks. The Blue Diamond engine lived on until the early 60's renamed as Black Diamond engines, the BD-282 and BD-308.
International Harvester gasoline I4 engines :
| Engine Family | Cylinder Layout | Name | Displacement | Bore × Stroke | Fuel System Type | Years Produced |
| "Comanche" 4 | I4 | 4-152 | 151.8 cu in (2.5 L; 2,488 cc) | 3+7⁄8 in (98.4 mm) × 3+7⁄32 in (81.8 mm) | Carburetor | 1961–1972 |
| "Comanche" 4 | I4 | 4-196 | 195.4 cu in (3.2 L; 3,203 cc) | 4+1⁄8 in (104.8 mm) × 3+21⁄32 in (92.9 mm) | Carburetor | 1966–1980 |
| International Harvester gasoline I6 engines |||||||
| Engine Family | Cylinder Layout | Name | Displacement | Bore × Stroke | Fuel System Type | Years Produced |
| HD Green Diamond | I6 | HD/GD 175 | 174.9 cu in (2.9 L; 2,867 cc) | 3 in (76.2 mm) × 4+1⁄8 in (104.8 mm) | L-head Carburetor | 1934–1949 |
| HD Green Diamond | I6 | HD-3/GD 214 | 213.3 cu in (3.5 L; 3,495 cc) | 3+5⁄16 in (84.1 mm) × 4+1⁄8 in (104.8 mm) | L-head Carburetor | 1934–1949 |
| HD Green Diamond | I6 | HD-2/GD 233 | 232.7 cu in (3.8 L; 3,813 cc) | 3+5⁄16 in (84.1 mm) × 4+1⁄2 in (114.3 mm) | L-head Carburetor | 1934–1949 |
| FAC Blue Diamond | I6 | FAC-241 | 241.5 cu in (4.0 L; 3,958 cc) | 3+3⁄8 in (85.7 mm) × 4+1⁄2 in (114.3 mm) | Carburetor | 1941-1954 |
| FAC Blue Diamond | I6 | BLD-250 | 250.6 cu in (4.1 L; 4,106 cc) | 3+7⁄16 in (87.3 mm) × 4+1⁄2 in (114.3 mm) | Carburetor | 1941-1954 |
| FAC Blue Diamond | I6 | FAC-260 | 259.8 cu in (4.3 L; 4,257 cc) | 3+1⁄2 in (88.9 mm) × 4+1⁄2 in (114.3 mm) | Carburetor | 1941-1954 |
| FAC Blue Diamond | I6 | BLD-269 | 269.1 cu in (4.4 litres) | | Carburetor | 1941-1954 |
| Silver Diamond Black Diamond/BD BG | I6 | SD-220 | 220.5 cu in (3.6 L; 3,614 cc) | 3+9⁄16 in (90.5 mm) × 3+11⁄16 in (93.7 mm) | Carburetor | 1949–1969 |
| Silver Diamond Black Diamond/BD BG | I6 | SD-240/BG-241 | 240.3 cu in (3.9 L; 3,938 cc) | 3+9⁄16 in (90.5 mm) × 4.018 in (102.1 mm) | Carburetor | 1949–1969 |
| Silver Diamond Black Diamond/BD BG | I6 | BD-264/BG-265 | 264.3 cu in (4.3 L; 4,331 cc) | 3+11⁄16 in (93.7 mm) × 4+1⁄8 in (104.8 mm) | Carburetor | 1949–1969 |
| Silver Diamond Black Diamond/BD BG | I6 | BD-282 | 282.5 cu in (4.6 L; 4,630 cc) | 3+13⁄16 in (96.8 mm) × 4+1⁄8 in (104.8 mm) | Carburetor | 1949–1969 |
| Silver Diamond Black Diamond/BD BG | I6 | BD-308 | 308 cu in (5.0 litres) | | Carburetor | 1949–1969 |
| FBC Red Diamond | I6 | FBC/RED 318 | 318.4 cu in (5.2 L; 5,218 cc) | 3+7⁄8 in (98.4 mm) × 4+1⁄2 in (114.3 mm) | Governed Carburetor | 1941–1974 |
| FBC Red Diamond | I6 | FBC/RED 361 | 360.8 cu in (5.9 L; 5,913 cc) | 4+1⁄8 in (104.8 mm) × 4+1⁄2 in (114.3 mm) | Governed Carburetor | 1941–1974 |
| FBC Red Diamond | I6 | RD 372 | 372.1 cu in (6.1 L; 6,097 cc) | 4+3⁄8 in (111.1 mm) × 4+1⁄8 in (104.8 mm) | Governed Carburetor | 1941–1974 |
| FBC Red Diamond | I6 | FBC/RED 401 | 400.9 cu in (6.6 L; 6,570 cc) | 4+1⁄8 in (104.8 mm) × 5 in (127.0 mm) | Governed Carburetor | 1941–1974 |
| FBC Red Diamond | I6 | RD 406 | 405.9 cu in (6.7 L; 6,651 cc) | 4+3⁄8 in (111.1 mm) × 4+1⁄2 in (114.3 mm) | Governed Carburetor | 1941–1974 |
| FBC Red Diamond | I6 | RED 450 then RD 450 | 451.0 cu in (7.4 L; 7,390 cc) | 4+3⁄8 in (111.1 mm) × 5 in (127.0 mm) | Governed Carburetor | 1941–1974 |
| FBC Red Diamond | I6 | RD 501 | 501.0 cu in (8.2 L; 8,210 cc) | 4+1⁄2 in (114.3 mm) × 5+1⁄4 in (133.4 mm) | Governed Carburetor | 1941–1974 |
| International Harvester gasoline V8 engines |||||||
| Engine Family | Cylinder Layout | Name | Displacement | Bore × Stroke | Fuel System Type | Years Produced |
| V/LV | V8 | LV-401 | 400.9 cu in (6.6 L; 6,570 cc) | 4+1⁄8 in (104.8 mm) × 3+3⁄4 in (95.3 mm) | Governed Carburetor | 1955–1974 |
| V/LV | V8 | LV-461 | 461.1 cu in (7.6 L; 7,555 cc) | 4+1⁄8 in (104.8 mm) × 4+5⁄16 in (109.5 mm) | Governed Carburetor | 1955–1974 |
| V/LV | V8 | LV-478 | 477.1 cu in (7.8 L; 7,819 cc) | 4+1⁄2 in (114.3 mm) × 3+3⁄4 in (95.3 mm) | Governed Carburetor | 1955–1974 |
| V/LV | V8 | LV-549 | 548.7 cu in (9.0 L; 8,992 cc) | 4+1⁄2 in (114.3 mm) × 4+5⁄16 in (109.5 mm) | Governed Carburetor | 1955–1974 |
| V/LV | V8 | V-537 | 537.6 cu in (8.8 L; 8,810 cc) | 4+5⁄8 in (117.5 mm) × 4 in (101.6 mm) | Governed Carburetor | 1955–1974 |
| SV "Comanche" | V8 | SV-266 | 265.8 cu in (4.4 L; 4,355 cc) | 3+5⁄8 in (92.1 mm) × 3+7⁄32 in (81.8 mm) | Carburetor | 1959-1985 |
| SV "Comanche" | V8 | SV-304 | 303.7 cu in (5.0 L; 4,976 cc) | 3+7⁄8 in (98.4 mm) × 3+7⁄32 in (81.8 mm) | Carburetor | 1959-1985 |
| SV "Comanche" | V8 | SV-345 | 345.0 cu in (5.7 L; 5,653 cc) | 3+7⁄8 in (98.4 mm) × 3+21⁄32 in (92.9 mm) | Carburetor | 1959-1985 |
| SV "Comanche" | V8 | SV-392 | 390.9 cu in (6.4 L; 6,406 cc) | 4+1⁄8 in (104.8 mm) × 3+21⁄32 in (92.9 mm) | Carburetor | 1959-1985 |
| MV | V8 | MV-404 | 404 cu in (6.6 litres) | | Carburetor | 1974-198? |
| MV | V8 | MV-446 | 446 cu in (7.3 litres) | | Carburetor | 1974-198? |
* 1 2 Originally a Blue Diamond engine, renamed Black Diamond
* ↑ Re-engineered engine used in early 70's; never made it into trucks because of the gas crisis of 1973. It was sold for industrial purposes as the V-605 (bore 4.625", stroke 4.500").

## International Harvester/Navistar engines

International Harvester/Navistar V6/V8 Engine Family :
| Engine Family | Cylinder Layout | Displacement(s) | Injection Type | Years Produced |
| DV | V8 | DV 462 - 7.6 L (460 cu in) DV 550 - 9 L (550 cu in) DV 550B - 9 L (550 cu in) | Direct injection | DV 462 - 1966-1988 DV 550 - 1966-1988 DV 550B - 1966-1988 |
| D-Series D 150 D 170 D 190 | V8 | 9 L (550 cu in) | Direct Injection | 1962-early 1988 |
| 9.0L V8 | V8 | 9 L (550 cu in) | Direct Injection | 1966-1988 |
| IDI (International/Ford) | V8 | 420 cubic inches (6.9 L) 444 cubic inches (7.3 L) | Indirect injection | 1983-1987 (6.9L) 1988-1994 (7.3L) |
| T444E Original Ford PowerStroke | V8 | 444 cubic inches (7.3 L) | Direct injection | 1994-2004 |
| VT 2nd-generation Ford PowerStroke | VT275-V6 VT365-V8 | 275 cubic inches (4.5 L) 365 cubic inches (6.0 L) | Direct injection | 2003-2010 |

## Navistar DT engines

Navistar DT Engine Family :
| Engine Family | Cylinder Layout | Displacement(s) | Injection Type | Years Produced |
| PLN (Pump Line and Nozzle) DT 360 DT 466 | Inline-6 | DT 360 - 360 cubic inches (5.9 L) DT 466 - 466 cubic inches (7.6 L) | Direct Injection | 1984-late 1995 |
| NGD (New Generation Diesel) DT408 DT466/HT466 DT530/HT530 | Inline-6 | DT 408 - 408 cubic inches (6.7 L) DT 466/HT466 - 466 cubic inches (7.6 L) DT 530/HT530 - 530 cubic inches (8.7 L) | Direct Injection | 1994-1997 |
| HEUI (Hydraulically actuated Electronically controlled Unit Injection) DT466/HT466 DT530/HT530 | Inline-6 | DT 466/HT466 - 466 cubic inches (7.6 L) DT 530/HT530 - 530 cubic inches (8.7 L) | Direct Injection | 1994-2004 |
| G2 (Electro-Hydraulic Generation Two) DT 466/HT466 DT 570/HT570 | Inline-6 | DT 466/HT466 - 466 cubic inches (7.6 L) DT 570/HT570 - 570 cubic inches (9.3 L) | Direct Injection | 2004-2007 |

## MaxxForce engines

Navistar International MaxxForce Engine Family :
| Engine Family | Cylinder Layout | Displacement(s) | Injection Type | Years Produced |
| MaxxForce 5 | V6 | 275 cubic inches (4.5 L) | Direct Injection | 2007-2010 |
| MaxxForce 7 3rd Generation Ford PowerStroke | V8 | 6.4L | Direct Injection | 2007-2014 (International) 2008-2010 (Ford) |
| MaxxForce DT | Inline-6 | 466 cubic inches (7.6 L) | Direct Injection | 2007-2014 |
| MaxxForce 9 | Inline-6 | 570 cubic inches (9.3 L) | Direct Injection | 2007-2014 |
| MaxxForce 10 | Inline-6 | 570 cubic inches (9.3 L) | Direct Injection | 2007-2014 |
| MaxxForce 11 | Inline-6 | 10.5 L | Direct Injection | 2007-2014 |
| MaxxForce 13 | Inline-6 | 12.4 L | Direct Injection | 2007-2014 |

## MWM-International engines

In 2005, Navistar acquired MWM International Motores, a Brazilian diesel engine manufacturer formerly associated with the German manufacturer of the same name, Motoren Werke Mannheim AG (MWM). Now called "MWM International Ind. de Motores da America do Sul Ltda.", it has two manufacturing plants: one in São Paulo, Brazil and another in Cordoba, Argentina. Since it was bought by the American group, in addition to the engines manufactured using its own technology and know-how, it has produced two models denominated "NGD", New Generation Diesel, under the brand of "MWM-International". One being a 4-cylinder 3.0 L turbo diesel, featuring piezoelectric common rail direct injection. This engine equipped the South American version of the Ford Ranger and the Troller T4, a Brazil exclusive four wheel drive vehicle. A 6-cylinder 9.3 L turbo diesel was also produced, but mainly dedicated to stationary power applications and the medium-sized trucks, the Volkswagen Constellation Series.
MWM-International NGD Engine Family :
| Engine Family | Cylinder Layout | Displacement(s) | Power output | Torque | Injection Type | Years Produced |
| NGD MaxxForce 3.0 HS | Inline-4 | 184 cubic inches (3.0 L) | 163 hp (122 kW) @ 3800 rpm | 286 lb⋅ft (388 N⋅m) @1600-2200 rpm | Direct Injection | 2005-2012 |
| NGD MaxxForce 10 P | Inline-6 | 570 cubic inches (9.3 L) | 367 hp (273 kW) @2000 rpm | 1180 lb⋅ft (1600 N⋅m) @1100-1400 rpm | Direct Injection | 2007-2013 |