Service parts for the 125EOZ
Grouped by system, with how many of each the parts manual calls for.
Oil system
1 requiredPrices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.
Specifications
| Fuel | diesel |
|---|---|
| Frequency | 60.0 Hz |
| Standby power | 125 kW |
| Standby kVA | 156 |
| Prime power | 125 kW |
| Emissions | Tier III |
| Controller | Decision-Maker 3+, Decision-Maker 3500, KOHLER-built microprocessor controls |
| Oil capacity | 19.0 L |
| Alternator | Fast-Response X |
| Voltage options | 120/208 V, 120/240 V, 127/220 V, 139/240 V, 277/480 V |
| Phase | 3 |
| Rated current | 434 A |
| Battery cranking | 925 CCA |
| Battery voltage | 12- or 24-volt V |
| Coolant capacity | 19 L |
| Dimensions (L×W×H) | 2205×971×1065 mm |
| Dry weight | 1683 kg |
| Wet weight | 1683 kg |
Maintenance & consumables
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Fuel filter | Primary | 223414 | Amazon eBay $13.45 | ||
| Fuel filter | Secondary | 223953 | Amazon $59.00 eBay $80.00 | ||
| Oil filter | 223673 | Amazon $53.57 eBay $26.99 KuduParts $14.00 |
Common questions
What size generator is the Kohler 125EOZ?
The Kohler 125EOZ is rated 125 kW standby (156.0 kVA).
What fuel does the Kohler 125EOZ use?
The Kohler 125EOZ runs on diesel.
What alternator does the Kohler 125EOZ use?
The Kohler 125EOZ uses a Fast-Response X alternator.
What oil filter fits the Kohler 125EOZ?
The Kohler 125EOZ uses oil filter part number 223673.
Which fuel filter part number does the Kohler 125EOZ take?
The Kohler 125EOZ uses fuel filter part numbers 223414, 223953.
Parts
146model family| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 222771 | Fuel filter | 1 | Fuel filter | Amazon $121.99 eBay $325.00 |
| 223414 | Element, filter | 1 | Fuel filter | Amazon eBay $13.45 |
| 223604 | Filter, oil | 1 | Oil filter | Amazon $36.99 eBay $13.00 |
| 223673 | Filter, oil | 1 | Oil filter | Amazon $53.57 eBay $26.99 KuduParts $14.00 |
| 223953 | Filter, fuel | 1 | Fuel filter | Amazon $59.00 eBay $80.00 |
| 226915 | Element, air cleaner | 1 | Air filter | Amazon $70.01 eBay $43.43 |
| 229125 | V-Belt (Seawater Pump) | 2 | Belt | Amazon $53.99 eBay $22.07 FridayParts $62.70 |
| 229678 | Filter, oil | 4 | Oil filter | Amazon $45.56 eBay $24.45 PartsGeek $7.98 |
| 229715 | Element, fuel | 4 | Fuel filter element | Amazon $12.99 eBay $11.99 KuduParts $11.00 |
| 229826 | Seawater Pump Impeller Kit | 4 | Impeller | Amazon $27.95 eBay $45.71 FridayParts $33.59 |
| 249989 | BELT | 1 | Belt | Amazon $26.40 eBay $19.76 |
| 250719 | Breaker amps | buy | ||
| 250813 | Element, fuel | 1 | Fuel filter | Amazon $42.99 eBay $14.95 |
| 250954 | Filter, oil | 1 | Oil filter | Amazon eBay $23.00 |
| 252834 | Filter, oil | 1 | Oil filter | Amazon $13.66 eBay $27.95 PartsGeek $7.98 |
| 252898 | Filter, fuel | 1 | Fuel filter | Amazon $39.02 eBay $19.28 |
| 253107 | Element, Air Cleaner | 1 | Air filter | Amazon $43.25 eBay $69.00 |
| 253108 | Element, air cleaner | 1 | Air filter | Amazon $32.19 eBay $71.99 |
| 254471 | Element, air cleaner | 1 | Air filter | Amazon $24.99 eBay $54.34 |
| 256503 | BELT | 1 | Belt | Amazon $36.99 eBay $18.44 |
| 258423 | Element, air cleaner | 1 | Air filter | Amazon $44.00 eBay $34.57 |
| 258646 | Element, air cleaner | 1 | Air filter | Amazon $44.00 eBay $35.69 |
| 260085 | ZINC ANODE KIT | 4 | Zinc anode kit | Amazon eBay $16.99 |
| 267714 | Filter, oil | 1 | Oil filter | Amazon $17.04 eBay $15.30 |
| 267987 | FILTER, PRIMARY FUEL | 1 | Fuel filter | Amazon $10.64 eBay $14.99 KuduParts $18.00 |
| 272981 | Element, air cleaner | 4 | Air filter | Amazon $328.00 eBay $449.00 |
| 272982 | Air Cleaner element (standard duty) - 350REOZV/350REOZVC | 1 | Air filter | Amazon $299.00 eBay $179.95 |
| 274821 | Air Cleaner | 26 | Air filter | Amazon $47.99 eBay $100.00 |
| 275501 | Filter, fuel | 1 | Fuel filter | Amazon $46.38 eBay $46.38 KuduParts $18.00 |
| 276148 | BELT | 1 | Belt | Amazon eBay |
| 277759 | Element, Air Cleaner | Air filter | Amazon eBay $44.99 | |
| 278612 | Air filter material made of a self-extinguishing material | 1 | Air filter | Amazon eBay $29.64 |
| 278858 | Element, air cleaner | 1 | Air filter | Amazon $29.99 eBay $30.48 |
| 279218 | Filter, oil | Oil filter | Amazon $42.83 eBay $18.91 | |
| 279260 | Filter, oil | 1 | Oil filter | Amazon $37.37 eBay |
| 279261 | Filter, fuel | 1 | Fuel filter | Amazon $37.36 eBay $292.07 KuduParts $42.00 |
| 279262 | Filter, fuel | 1 | Fuel filter | Amazon $51.92 eBay $25.00 |
| 279449 | Filter, oil | 1 | Oil filter | Amazon $38.79 eBay $20.00 |
| 279736 | Element, primary | 2 | Air filter | Amazon eBay |
| 322056-S | Filter secondary fuel | 1 | Fuel filter | Amazon eBay $10.32 |
| 322536 | Filter, fuel | 1 | Fuel filter | eBay |
| 324418 | Element, Air Cleaner(Branded 1 Per Case) | 1 | Air filter | eBay |
| 326098 | Element, air cleaner | 3 | Air filter | Amazon eBay $55.00 |
| 326099 | Element, air cleaner | 1 | Air filter | eBay $35.00 |
| 326817 | Filter, oil | 1 | Oil filter | Amazon $19.99 eBay $17.13 |
| 328215 | Filter, fuel | Fuel filter | Amazon $29.47 eBay $19.99 | |
| 328216 | Filter, fuel | Fuel filter | Amazon $34.27 eBay | |
| 336661 | Dust seal | 1 | Dust seal | Amazon eBay $33.63 PartsGeek $6.98 KuduParts $18.00 |
| 343219 | Air cleaner, industrial | 1 | Air filter | Amazon $378.00 eBay |
| 343445 | Filter, oil | 1 | Oil filter | Amazon $54.57 eBay $33.15 |
| 354842 | Element, air cleaner | 4 | Air filter | Amazon eBay |
| 359771 | FILTER, OIL | 1 | Oil filter | Amazon $64.99 eBay $22.46 FridayParts $66.23 |
| 359978 | IMPELLER REPAIR KIT | 1 | Impeller | FridayParts $66.23 |
| 360031 | Filter, oil | 1 | Fuel filter | Amazon $69.41 eBay $37.99 FridayParts $34.99 |
| 363205 | BELT | 1 | Belt | Amazon $36.26 eBay $25.11 |
| 363418 | Filter, fuel | 1 | Fuel filter | Amazon $22.99 eBay $21.69 KuduParts $20.00 |
| 365012 | Filter, oil | 1 | Oil filter | Amazon eBay $43.99 |
| 52 050 02-S | Filter, oil | 8 | Oil filter | Amazon $22.70 eBay |
| ED0021750010-S | OIL FILTER CARTRIDGE | Oil filter | Amazon $8.22 eBay $109.95 FridayParts $19.50 | |
| ED0021752800-S | Oil Filter | Oil filter | Amazon $21.95 eBay $22.90 FridayParts $19.99 | |
| ED0021752850-S | Oil Filter | 4 | Oil filter | Amazon $23.95 eBay $24.95 |
| ED0021752880-S | Fuel Filter Element | 4 | Fuel filter | Amazon $13.88 eBay $49.95 KuduParts $14.00 |
| ED0021753180-S | Fuel Filter Element (Secondary) | 4 | Fuel filter | Amazon $79.99 eBay $72.00 KuduParts $34.00 |
| ED0021753200-S | Fuel Filter Element | Fuel filter | Amazon $68.80 eBay $17.99 FridayParts $68.86 | |
| GM103820 | Fuel filter | buy | ||
| GM105310 | Container | buy | ||
| GM12310 | Container | buy | ||
| GM12314 | Container | buy | ||
| GM13224 | Filter, oil | 1 | Oil filter | Amazon eBay $60.00 |
| GM13660 | Belt seawater pump | Brush | Amazon eBay $23.18 | |
| GM13943 | Oil Filter (bypass) | 1 | Oil filter | Amazon eBay |
| GM13947 | Filter, fuel | 4 | Fuel filter | Amazon $30.01 eBay $79.99 |
| GM15402 | BELT | 1 | Belt | Amazon eBay $34.50 |
| GM16114 | Filter, oil | Oil filter | Amazon $7.39 eBay | |
| GM16532 | Filter, oil | Oil filter | Amazon eBay $4.84 | |
| GM16703 | Filter, oil | 1 | Oil filter | Amazon $9.06 eBay $58.00 |
| GM16944 | Element, air cleaner | 1 | Air filter | Amazon $71.53 eBay $49.68 |
| GM18704 | BELT | 1 | Belt | Amazon eBay |
| GM18793 | IMPELLER REPAIR KIT | 1 | Impeller | Amazon $69.60 eBay $49.95 |
| GM18808 | FILTER, SECONDARY FUEL | 1 | Fuel filter | Amazon eBay $20.00 |
| GM18821 | FILTER, PRIMARY FUEL | 1 | Fuel filter | Amazon eBay $49.99 |
| GM25504 | Oil filter | Oil filter | Amazon $118.00 eBay $184.15 | |
| GM25506 | Oil filter bypass | Oil filter | Amazon eBay $35.00 FridayParts $99.99 | |
| GM25508 | Filter, oil | 1 | Oil filter | Amazon $168.95 eBay $14.95 |
| GM25537 | Filter, fuel | 1 | Fuel filter | Amazon eBay FridayParts $32.00 |
| GM25552 | Fuel filter/water separator | 1 | Fuel filter | Amazon eBay $14.99 |
| GM25554 | Fuel filter | 1 | Fuel filter | Amazon $122.03 eBay $19.99 |
| GM28351 | Filter, oil | 1 | Oil filter | Amazon $25.85 eBay $19.46 |
| GM30594 | Filter, fuel, secondary | 1 | Fuel filter | Amazon $109.99 eBay $60.00 KuduParts $59.00 |
| GM32359 | Filter, fuel | 1 | Fuel filter | Amazon $22.24 eBay $26.87 KuduParts $20.00 |
| GM32809 | Fuel Filter | 1 | Fuel filter | Amazon $57.96 eBay $26.25 |
| GM34570 | Fuel Filter (gasoline) | 1 | Fuel filter | Amazon $21.55 eBay $34.05 |
| GM35825 | BELT | 1 | Belt | Amazon eBay $133.60 |
| GM35826 | Spark plug | 4 | Spark plug | Amazon eBay $13.00 |
| GM39266 | Fuse: Controller, Fuel Pump, and Fuel Shutoff Solenoid (F2) 20 Amp | 1 | Fuel pump | Amazon eBay $14.88 |
| GM41014 | Fuel Filter Element (Primary) | Fuel filter | Amazon eBay $70.50 | |
| GM46180 | SPARK PLUG | 2 | Spark plug | Amazon eBay $15.14 |
| GM47465 | Filter, oil | 1 | Oil filter | Amazon $13.66 eBay $23.52 FridayParts $20.19 |
| GM48014 | BELT, SEAWATER PUMP | 1 | Belt | buy |
| GM48727 | FILTER, PRIMARY FUEL | Fuel filter | Amazon $21.88 eBay $24.99 | |
| GM48728 | FILTER, SECONDARY FUEL | 1 | Fuel filter | Amazon eBay $100.76 |
| GM48729 | FILTER, PRIMARY FUEL | 1 | Fuel filter | Amazon $28.55 eBay $24.99 |
| GM48730 | FILTER, SECONDARY FUEL | 4 | Fuel filter | Amazon eBay $25.50 |
| GM48731 | FILTER, OIL | 4 | Fuel filter element | Amazon $20.01 eBay $49.99 |
| GM50263 | FILTER, PRIMARY FUEL (Includes primary and secondary filter elements) | 1 | Fuel filter | Amazon $148.00 eBay $99.99 |
| GM50644 | Seawater Pump Impeller Kit | Impeller | Amazon $31.00 eBay $30.00 | |
| GM51356 | Container | buy | ||
| GM53040 | BELT, SEAWATER PUMP | 1 | Belt | Amazon $49.73 eBay $19.94 |
| GM77091 | BELT, SEAWATER PUMP | 1 | Belt | buy |
| GM84053 | Container | buy | ||
| GM84054 | Container | buy | ||
| GM88686 | BELT | 1 | Belt | Amazon eBay $43.03 |
| GM89804 | Container | buy | ||
| GM89805 | Container | buy | ||
| GM90645 | V-Belt (Seawater Pump) | Belt | Amazon eBay $30.30 | |
| GM91974 | FUEL FILTER KIT, PRIMARY/SECONDARY | 1 | Fuel filter | Amazon eBay |
| GM95659 | Container | buy | ||
| GM95660 | Container | buy | ||
| GM98756 | IMPELLER REPAIR KIT | 4 | Spark plug | Amazon eBay |
| GM98801 | BELT | 1 | Belt | Amazon eBay |
| GM99047 | Container | buy | ||
| X-6348-6 | DECAL | 12 | Decals | Amazon eBay |
| X-6348-9 | DECAL | 1 | Decals | buy |
| 100EFOZCJ | Generator † Model | 1 | Service part / kit | buy |
| 125EFOZCJ | Generator † Model | 1 | Service part / kit | buy |
| 125EOZCJ | Generator † Model | 1 | Service part / kit | buy |
| 150EOZCJ | Generator † Model | 1 | Service part / kit | buy |
| 223316 | Fuse, 10 A, 250 V | 1 | Service part / kit | Amazon $171.06 eBay $31.37 |
| 239282 | Brush | 2 | Service part / kit | Amazon eBay $37.28 |
| 239298 | Fuse: Customer Connection (F3) 5 Amp | 1 | Service part / kit | Amazon eBay $7.74 |
| 243273 | Fuse, 3 amp | 5 | Service part / kit | Amazon eBay |
| 262389 | Fuse, 25 amp | 1 | Service part / kit | Amazon eBay $14.83 |
| 267928 | ZINC ANODE KIT | 1 | Service part / kit | buy |
| 283645 | Fuse, 15 amp | 5 | Service part / kit | Amazon eBay |
| 33EFOZCJ | Generator † Model | 1 | Service part / kit | buy |
| 344835 | CONTAINER | 1 | Service part / kit | buy |
| 352142 | ZINC ANODE KIT | 1 | Service part / kit | Amazon $38.07 eBay $26.09 |
| 358337 | Fuse: Auxiliary Winding (F1) 10 Amp | 1 | Service part / kit | Amazon $101.99 eBay $45.17 |
| 40EOZCJ | Generator † Model | 1 | Service part / kit | buy |
| ED0090802150-S | Zinc Anode | 4 | Service part / kit | Amazon eBay $60.67 |
| ED0090802840-S | Zinc Anode | 4 | Service part / kit | Amazon eBay $92.76 |
| GM13949 | Filter, oil | 4 | Service part / kit | Amazon eBay |
| GM47427 | FUSE, 20-AMP | 1 | Service part / kit | buy |
| GV15402 | CIRCUIT BREAKER, 10-AMP | 1 | Service part / kit | buy |
| GV42337 | FUSE, 10-AMP | 5 | Service part / kit | buy |
| GV42339 | FUSE, 25-AMP | 5 | Service part / kit | buy |
Compiled from this model's family documentation — may include parts for closely-related variants. Confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.
Fuel consumption
| Rating | Load | L/h | gal/h |
|---|---|---|---|
| Prime | 25% | 12.7 | 3.4 |
| Prime | 50% | 21.4 | 5.7 |
| Prime | 75% | 31.2 | 8.2 |
| Prime | 100% | 39.5 | 10.4 |
| Standby | 25% | 12.7 | 3.35 |
| Standby | 50% | 19.3 | 5.1 |
| Standby | 75% | 26.3 | 6.95 |
| Standby | 100% | 33.9 | 8.97 |
Available documents
Spec sheet (Kohler)Spec sheet — 007165-01 MAR Commercial SpecificationSheetRevise v2 (Kohler)Spec sheet — Commercial SpecSheet (Kohler)Spec sheet — g2157 (Kohler)Spec sheet — g2166 (Kohler)Reference (Kohler)Reference — G18095 (Kohler)Reference — Kohler-Marine (Kohler)Reference — Marine pocket guide (Kohler)Reference — PleasureCraft SpecificationSheet (Kohler)Owner's manual — tp6861 (Kohler)Parts manual (Kohler)Parts manual — 2017-Sea-Spares-Brochure-g12202 (Kohler)Parts manual — G12-202-11-20-Sea-Spares-Kits-brochure (Kohler)Parts manual — MAR CommercialBroch2015 (Kohler)Parts manual — g260412 (Kohler)