The John Deere 4024HF285B is a 2.4 L turbocharged engine rated at 1800 rpm. It powers generator sets from Kohler, including the 50REOZJ. It holds 8.2 L (2.2 gal) of oil and 10.6 L (2.8 gal) of coolant.
Also known as: John Deere 4024HF285B
Part of the John Deere 4024 engine family — 18 variants share parts & fitment.
| Oil capacity | 8.2 L |
|---|---|
| Coolant capacity | 10.6 L |
| Displacement | 2.4 L |
| Aspiration | Turbocharged |
| Rated speed | 1800 rpm |
| Type | Item | Value | Unit | Condition |
|---|---|---|---|---|
| Other | 10 in. weld flange bolt circle diameter B | 361.95 | mm (14.25 in.) | |
| Other | 10 in. weld flange outside diameter C | 406.4 | mm (16.0 in.) | |
| Other | 10 in. weld flange quantity of bolts / bolt hole diameter D | 12, 25.40 | mm (1.00 in.) | |
| Other | 12 in. weld flange bolt circle diameter B | 431.80 | mm (17.00 in.) | |
| Other | 12 in. weld flange outside diameter C | 482.6 | mm (19.0 in.) | |
| Other | 12 in. weld flange quantity of bolts / bolt hole diameter D | 12, 25.40 | mm (1.00 in.) | |
| Other | 14 in. weld flange bolt circle diameter B | 476.25 | mm (18.75 in.) | |
| Other | 14 in. weld flange outside diameter C | 533.4 | mm (21.0 in.) | |
| Other | 14 in. weld flange quantity of bolts / bolt hole diameter D | 12, 28.58 | mm (1.13 in.) | |
| Other | 16 in. weld flange bolt circle diameter B | 539.75 | mm (21.25 in.) | |
| Other | 16 in. weld flange outside diameter C | 596.9 | mm (23.5 in.) | |
| Other | 16 in. weld flange quantity of bolts / bolt hole diameter D | 16, 28.58 | mm (1.13 in.) | |
| Other | 18 in. weld flange bolt circle diameter B | 577.85 | mm (22.75 in.) | |
| Other | 18 in. weld flange outside diameter C | 635.0 | mm (25.0 in.) | |
| Other | 18 in. weld flange quantity of bolts / bolt hole diameter D | 16, 31.75 | mm (1.25 in.) | |
| Other | 20 in. weld flange bolt circle diameter B | 635.00 | mm (25.00 in.) | |
| Other | 20 in. weld flange outside diameter C | 698.5 | mm (27.5 in.) | |
| Other | 20 in. weld flange quantity of bolts / bolt hole diameter D | 20, 31.75 | mm (1.25 in.) | |
| Other | 5 in. weld flange bolt circle diameter B | 215.90 | mm (8.50 in.) | |
| Other | 5 in. weld flange outside diameter C | 241.30 | mm (9.50 in.) | |
| Other | 5 in. weld flange quantity of bolts / bolt hole diameter D | 8, 22.23 | mm (0.88 in.) | |
| Other | 6 in. weld flange bolt circle diameter B | 254.0 | mm (10.0 in.) | |
| Other | 6 in. weld flange outside diameter C | 279.4 | mm (11.0 in.) | |
| Other | 6 in. weld flange quantity of bolts / bolt hole diameter D | 8, 22.23 | mm (0.88 in.) | |
| Other | 8 in. weld flange bolt circle diameter B | 298.45 | mm (11.75 in.) | |
| Other | 8 in. weld flange outside diameter C | 342.9 | mm (13.5 in.) | |
| Other | 8 in. weld flange quantity of bolts / bolt hole diameter D | 8, 22.23 | mm (0.88 in.) | |
| Other | Weld flange angle A (10, 12, 14 in. nominal pipe size) | 30 | deg. | |
| Other | Weld flange angle A (16, 18, 20 in. nominal pipe size) | 22.5 | deg. | |
| Other | Weld flange angle A (5, 6, 8 in. nominal pipe size) | 45 | deg. |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
| Fluid | Grade | Standard | Ambient | Capacity | Notes |
|---|---|---|---|---|---|
| Fuel | #2 Diesel | Recommended fuel |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
| Voltage | Phase | Connection | Leads | Notes |
|---|---|---|---|---|
| 12-lead optional voltage connections | 12 | Alternator optional feature | ||
| 4-lead dedicated voltages | 4 | Alternator standard feature | ||
| 110/127/139/240/254/277 | single-phase | switchable | Towable generator model specifications; some models n/a | |
| 208/220/240/415/440/480 | 3-phase | reconnectable | Towable generator model specifications | |
| 208/220/240/415/440/480 | 3-phase | switchable | Towable generator model specifications |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
| Part # | Description | Category |
|---|---|---|
| RE529377 | (12V, 70A) (3102) | Alternator |
| VP66S10L72-EG410 | Alternator Model | Alternator |
| 10-2659 | Auxilliary Gland Lip Seal | Auxilliary gland lip seal |
| 10-2646 | Bearing Cap | Bearing cap |
| 10-2654 | Bearing Washer | Bearing washer |
| DZ118735 | (LGTH = 2460 mm) (2413) | Belt |
| R524885 | (LGTH = 1450 mm) (2429) | Belt |
| R524936 | (OD = 128 mm) (8607) | Belt |
| 10-2657 | Brackplate Lip Seal | Brackplate lip seal |
| 10-2655 | Drive End Bearing(S) | Drive end bearing s |
| 160-2 | HARNESS, FUEL INJECTION WIRING (1662) | Harness |
| 300-2 | HARNESS, STARTER WIRING (3002) | Harness |
| 300-3 | HARNESS, STARTER WIRING (3003) | Harness |
| 350-6 | HARNESS, WATER IN FUEL WIRING (3525) | Harness |
| 350-8 | HARNESS, WATER IN FUEL WIRING (3526) | Harness |
| 670-12 | HARNESS, FUEL SYSTEM WIRING (6709) | Harness |
| 670-2 | HARNESS, FUEL PRESSURE WIRING (6704) | Harness |
| 670-4 | HARNESS, OIL PRESSURE WIRING (6705) | Harness |
| 670-6 | HARNESS, WATER IN FUEL WIRING (6706) | Harness |
| 670-8 | HARNESS, WATER IN FUEL WIRING (6707) | Harness |
| 840-4 | HARNESS, ENGINE EXTERNAL WIRING (8405) | Harness |
| 840-6 | HARNESS, ENGINE EXTERNAL WIRING (8411) | Harness |
| 10-2649 | Impeller Key | Impeller key |
| 670-14 | (HF295) KIT, FIELD INSTALLED INSTALLATION (97GU) | Kit |
| 670-18 | (HF295) KIT, FIELD INSTALLED INSTALLATION (97GV) | Kit |
| 970-10 | (HF295) KIT, FIELD INSTALLED INSTALLATION (97GV) | Kit |
| 970-5 | (HF295) KIT, FIELD INSTALLED INSTALLATION (97GJ) | Kit |
| 970-6 | (HF295) KIT, FIELD INSTALLED INSTALLATION (97GM) | Kit |
| 970-8 | (HF295) KIT, FIELD INSTALLED INSTALLATION (97GN) | Kit |
| 990-10 | KIT, CRANKSHAFT PULLEY (9901) | Kit |
| 990-14 | KIT, CONNECTING ROD BEARING (9901) STD | Kit |
| 990-15 | HEAD BOLTS KIT, CYLINDER (9901) | Kit |
| 990-18 | KIT, ENGINE GASKET (9901) | Kit |
| 990-8 | KIT, CRANKSHAFT MAIN BEARING (9901) | Kit |
| 990-9 | (9901) KIT, CRANKSHAFT MAIN BEARING, UNDERSIZED | Kit |
| 10-2658 | Mechanical Seal Spring Rubber Bellows Seal | Mechanical seal spring rubber bellows seal |
| 10-2651 | Mechanical Seal Stationary Seat | Mechanical seal stationary seat |
| 10-2647 | O-ring | O ring |
| 360031 | Filter, oil | Oil filter |
| RE519626 | OIL FILTER | Oil filter |
| 24001101 | Inspection Cover Hand Knob | Service part / kit |
| 41207 | DC WIRING DIAGRAM | Service part / kit |
| 49943A | Generac programmed controller part number | Service part / kit |
| 9246020674 | FAB 7/09 1M | Service part / kit |
| 9246020674a | FAB 9/09 1M | Service part / kit |
| 410-2 | PULLEY, FRONT AUX DRIVE(4103) | Pulley |
| 410-3 | PULLEY, FRONT AUX DRIVE (4104) | Pulley |
| 860-2 | PULLEY, FAN (8601) | Pulley |
| 860-3 | PULLEY, FAN (8602) | Pulley |
| 860-4 | PULLEY, FAN (8603) | Pulley |
| 860-5 | PULLEY, FAN (8604) | Pulley |
| 860-6 | PULLEY, FAN (8605) | Pulley |
| 860-7 | PULLEY, FAN (8606) | Pulley |
| RE520244 | CRANKSHAFT PULLEY (OD = 140 mm) | Pulley |
| MTP4000S | Self-Prime Diesel Trash Pump | Pump |
| MTP6000S3 | Self-Prime Diesel Trash Pump | Pump |
| PP44S10 | Pump, Model PP44S10 | Pump |
| PP66S12 | Pump, Model PP66S12 | Pump |
| 670-16 | SENSOR, SPEED (6706) | Sensor |
| 10-2648 | Single Brackplate | Single brackplate |
| RE540304 | (3001, 3002) | Starter |
| 10-2645 | Suction Cover | Suction cover |
| 10-2643 | Suction Cover O-ring | Suction cover o ring |
| 10-2653 | Suction Wear Ring | Suction wear ring |
Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.
Other equipment known to use this engine, via filter-application cross-reference — useful for sourcing parts even when your exact machine isn't listed elsewhere on this page.
The John Deere 4024HF285B engine has an oil capacity of 8.2 liters.
The John Deere 4024HF285B has a displacement of 2.4 liters.
The John Deere 4024HF285B powers 1 generator set(s), including Kohler 50REOZJ.