Service parts for the 125EFOZ
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 | 50.0 Hz |
| Standby power | 125 kW |
| Prime power | 125 kW |
| Emissions | IMO Tier III Exempt |
| Controller | Decision-Maker 3500 |
| Oil capacity | 19.0 L |
| Alternator | Fast-Response X |
| Voltage options | 110/190 V, 120/208 V, 110/220 V, 220/380 V, 230/400 V, 240/416 V |
| Phase | 3 |
| Rated current | 474 A |
| Battery cranking | 925 CCA |
| Battery voltage | 12- or 24-volt V |
| Coolant capacity | 19 L |
| Max ambient | 50 °C |
| Dimensions (L×W×H) | 2205×971×1065 mm |
| Dry weight | 1719 kg |
| Wet weight | 1551 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 125EFOZ?
The Kohler 125EFOZ is rated 125 kW standby.
Is the Kohler 125EFOZ diesel or gas?
The Kohler 125EFOZ runs on diesel.
What is the cooling system capacity of the Kohler 125EFOZ?
The Kohler 125EFOZ cooling system holds 19 liters (5.0 US gallons) for the radiator system including the engine, per the manufacturer specification sheet.
How much oil does the Kohler 125EFOZ take?
The Kohler 125EFOZ has an engine oil capacity of 19 liters (20.1 US quarts), per the manufacturer specification sheet.
How much does the Kohler 125EFOZ weigh?
The Kohler 125EFOZ has a dry weight of 1719 kg (3789 lb).
What voltages is the Kohler 125EFOZ available in?
The Kohler 125EFOZ is offered in 110/190 V, 120/208 V, 110/220 V, 220/380 V, 230/400 V, 240/416 V, 3-phase.
What battery does the Kohler 125EFOZ use?
The Kohler 125EFOZ uses 12- or 24-volt V each, 925 CCA, per the manufacturer specification sheet.
What alternator comes on the Kohler 125EFOZ?
The Kohler 125EFOZ uses a Fast-Response X alternator.
Which oil filter part number does the Kohler 125EFOZ take?
The Kohler 125EFOZ uses oil filter part number 223673.
What fuel filter fits the Kohler 125EFOZ?
The Kohler 125EFOZ 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) | 1 | Belt | Amazon $53.99 eBay $22.07 FridayParts $62.70 |
| 229678 | Filter, oil | 1 | Oil filter | Amazon $45.56 eBay $24.45 PartsGeek $7.98 |
| 229715 | Element, fuel | 1 | Fuel filter | Amazon $12.99 eBay $11.99 KuduParts $11.00 FridayParts $13.52 |
| 229826 | Seawater Pump Impeller Kit | 1 | 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 |
| 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 FridayParts $19.99 |
| 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 | 1 | Air filter | Amazon eBay $44.99 |
| 278612 | Element, air cleaner | 1 | Air filter | Amazon eBay $29.64 |
| 278858 | Element, air cleaner | 1 | Air filter | Amazon $29.99 eBay $30.48 |
| 279218 | Filter, oil | 1 | 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 | 1 | Fuel filter | Amazon $29.47 eBay $19.99 |
| 328216 | Filter, fuel | 1 | 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 | Oil 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 | 1 | Oil filter | Amazon $22.70 eBay |
| ED0021750010-S | OIL FILTER CARTRIDGE | 1 | Oil filter | Amazon $8.22 eBay $109.95 FridayParts $19.50 |
| ED0021752800-S | Oil Filter | 1 | 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 FridayParts $16.25 |
| ED0021753180-S | Fuel Filter Element (Secondary) | 4 | Fuel filter | Amazon $79.99 eBay $72.00 KuduParts $34.00 FridayParts $36.00 |
| ED0021753200-S | Fuel Filter Element | 1 | 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 | 1 | 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 | 1 | Oil filter | Amazon $7.39 eBay |
| GM16532 | Filter, oil | 1 | 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 | 1 | Oil filter | Amazon $118.00 eBay $184.15 |
| GM25506 | Oil filter bypass | 1 | 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 | Oil filter | 1 | Oil filter | Amazon Amazon Amazon Amazon $57.96 eBay $26.25 |
| GM34570 | FILTER, SECONDARY FUEL | 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 | 1 | 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 | 1 | 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 | 1 | 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 | BELT, SEAWATER PUMP | 1 | 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 |
| 260085 | ZINC ANODE KIT | 1 | Service part / kit | Amazon eBay $16.99 |
| 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% | 14.3 | 3.8 |
| Prime | 50% | 24.7 | 6.5 |
| Prime | 75% | 36.3 | 9.6 |
| Prime | 100% | 46.1 | 12.2 |
Available documents
Spec sheet (Kohler)Spec sheet — 007165-01 MAR Commercial SpecificationSheetRevise v2 (Kohler)Spec sheet — Commercial SpecSheet (Kohler)Spec sheet — g2158 (Kohler)Spec sheet — g2167 (Kohler)Reference (Kohler)Reference — G18095 (Kohler)Reference — Kohler-Marine (Kohler)Reference — Marine G12-191 (totalenergysystems.com)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)
This page was generated from the 17 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.