Maintenance schedule
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Oil | 7.4 L | — | 500 hr |
Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.
The Yanmar 4TNV84T-BGGE is a 2 L 4-cylinder turbo-charged engine rated at 1800 rpm, producing up to 38 kW. It powers generator sets from Aurora Generators and Westquip, including the AGi24Y-E and WQ25.
Also known as: Yanmar 4TNV84T-BGGE
Part of the Yanmar 4TNV84T engine family — 4 variants share parts & fitment.
| Displacement | 2.0 L |
|---|---|
| Cylinders | 4 |
| Aspiration | Turbo-charged |
| Rated speed | 1800 rpm |
| Gross power | 38 kW |
Shared across brands: Aurora Generators, Westquip
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Oil | 7.4 L | — | 500 hr |
Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.
| Item | Action | Hours | Months | Notes |
|---|---|---|---|---|
| Engine oil | Change | 500 hr | 500 hour oil change interval |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
| Type | Item | Value | Unit | Condition |
|---|---|---|---|---|
| Speed | Mechanical governor control | 3-5 | % | |
| Voltage | Voltage regulation | +/- 1 | % |
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 |
|---|---|---|
| 129508-01330 | GASKET, HEAD | gasket |
| 129795-01950 | Knock Pipe | hose |
| 171031-11741 | PIPE, FILLER | hose |
| 119620-01750 | CAP, WHEEL COVER | other_service |
| 119640-01640 | Drain Plug M22 x 1.5 | other_service |
| 119802-01520 | FLANGE, GEAR CASE | other_service |
| 119802-01561 | STUD, M8X25 | other_service |
| 119802-32100 | COVER ASSY, PUMP | other_service |
| 119802-32130 | SCREW, M6X16 | other_service |
| 121023-01551 | COVER, TACHOMETER | other_service |
| 124060-01050 | PLUG, PT1/8 | other_service |
| 124160-01751 | CAP, FILLER | other_service |
| 124160-01910 | PLUG, PT1/4 | other_service |
| 124240-01871 | Cover | other_service |
| 129001-01250 | PLUG, 50 | other_service |
| 129001-02931 | BEARING, MAIN | other_service |
| 129001-32330 | PLUG | other_service |
| 129100-01580 | PIN, PARALLEL 8X16 | other_service |
| 129150-01200 | Cylinder Head Bolt | other_service |
| 129150-02871 | BEARING, 0.25 US | other_service |
| 129150-02931 | BEARING, THRUST | other_service |
| 129150-02941 | BEARING, THRUST 0.25 | other_service |
| 129400-01730 | Oil Sump Spacer | other_service |
| 129418-32320 | SPRING | other_service |
| 129486-01670 | BOLT, M8X30 | other_service |
| 129508-32111 | ROTOR, INNER | other_service |
| 129508-32120 | ROTOR, OUTER | other_service |
| 129688-01780 | OIL PAN ASSY | other_service |
| 129795-02412 | BUSH, CAMSHAFT | other_service |
| 129900-32130 | Relief Valve | other_service |
| 171051-01921 | PLUG, NPTF1 | other_service |
| 171420-01600 | Flywheel Housing | other_service |
| 23876-030000 | PLUG, R03 | other_service |
| 23876-040000 | PLUG, R04 | other_service |
| 26106-060162 | BOLT, M6X 16 PLATED | other_service |
| 26106-080162 | Bolt, M8 x 16 Plated | other_service |
| 26106-080252 | Bolt, M8 x 25 Plated | other_service |
| 26106-080352 | Bolt, M8 x 35 Plated | other_service |
| 26106-080452 | BOLT, M8X 45 PLATED | other_service |
| 26106-080502 | Bolt, M8 x 50 Plated | other_service |
| 26106-080552 | Bolt, M8 x 55 Plated | other_service |
| 26206-100252 | Bolt, M10 x 25 | other_service |
| 26206-100302 | Bolt, M10 x 30 | other_service |
| 26306-080002 | Yammer 4TNV98-GGE engine component | other_service |
| 729508-01560 | BLOCK ASSY, CYLINDER | other_service |
| 729533-01500 | CASE ASSY, GEAR | other_service |
| 119802-32070 | COVER, OIL PUMP | pump |
| 119609-32040 | O-Ring, P16 | seal |
| 119934-01800 | Seal, Oil | seal |
| 121850-51960 | O-Ring | seal |
| 129648-01600 | CASE ASSY, OIL SEAL | seal |
| 129648-01780 | SEAL, OIL | seal |
| 22190-220002 | Seal Washer | seal |
| 24311-000320 | O-Ring | seal |
| 24341-000240 | O-Ring | seal |
Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.
Parts listed by aftermarket suppliers as fitting this engine — leads compiled from supplier catalogs; verify the exact part for your serial number.
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 Yanmar 4TNV84T-BGGE has a displacement of 2.0 liters with 4 cylinders.
The Yanmar 4TNV84T-BGGE powers 2 generator set(s), including Aurora Generators AGi24Y-E, Westquip WQ25.
The Yanmar 4TNV84T-BGGE oil change interval is every 500 hours.