Service parts for the 350REZX
Grouped by system, with how many of each the parts manual calls for.
Electrical
1 requiredPrices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.
Specifications
| Fuel | Natural Gas |
|---|---|
| Frequency | 60.0 Hz |
| Standby power | 350 kW |
| Standby kVA | 444 |
| Prime power | 300 kW |
| Emissions | EPA-Certified |
| Controller | APM402, APM603 |
| Oil capacity | 42.1 L |
| Alternator | 4M4019 (4-pole, Class Class H insulation) |
| Voltage options | 120/208 V |
| Phase | 3 |
| Rated current | 1216 A |
| Power factor | 0.8 |
| Circuit breaker | 60 A |
| Battery group | 31 |
| Battery cranking | 950 CCA |
| Battery voltage | 12 V |
| Battery quantity | 2 |
| Coolant capacity | 177 L |
| Max ambient | 50 °C |
| Dimensions (L×W×H) | 6365×2252×2695 mm |
| Dry weight | 3900 kg |
| Sound level | 69.0 dBA @ 23 m |
| Fuel tank | 0.0 L |
| Tank runtime | 10 hr |
Engine
| Oil capacity | 35.0 L |
|---|---|
| Coolant capacity | 50.0 L |
| Displacement | 18.3 L |
| Aspiration | Turbocharged, Charge Air-Cooled |
| Rated speed | 1800 rpm |
Maintenance & consumables
for the Doosan D183TIC| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Dry | — | |||
| Fuel filter | N/A | — | |||
| Oil filter | Cartridge | ×2 | — | ||
| Battery | 2x 12V wet-charged starting batteries, BCI Group 31, 950 CCA | 324586 | Amazon $16.34 eBay | ||
| Belt | N/A | — | 24 hr | ||
| Coolant | Water-Cooled | — | |||
| Oil | Full Pressure | — | |||
| Spark plug | N/A | — |
Service specifications
30| 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.
Common questions
What size generator is the Kohler 350REZX?
The Kohler 350REZX is rated 350 kW standby (444.0 kVA).
What engine is in the Kohler 350REZX?
The Kohler 350REZX is powered by the Doosan D183TIC engine.
What fuel type does the Kohler 350REZX take?
The Kohler 350REZX runs on Natural Gas.
How much oil does the Kohler 350REZX take?
The Doosan D183TIC engine in the Kohler 350REZX has an oil capacity of 35.0 liters.
What alternator comes on the Kohler 350REZX?
The Kohler 350REZX uses a 4M4019 alternator. It has 4 poles. Insulation class Class H.
Parts
13model family| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 300REZXD | 300 KW L.P./N.G. GENSET | 1 | Service part / kit | Amazon eBay |
| 350EOZCS | 350 KW DIESEL COMMERCIAL MARINE GENSET | 1 | Service part / kit | Amazon eBay |
| 350REOZJC | 350 KW DIESEL GENSET | 1 | Service part / kit | Amazon eBay $1799.95 |
| 350REOZJD | 350 KW DIESEL GENSET | 1 | Service part / kit | Amazon eBay $109858.00 |
| 350REZXD | 350 KW L.P./N.G. GENSET | 1 | Service part / kit | Amazon eBay |
| 400REOZJC | 400 KW DIESEL GENSET | 1 | Service part / kit | Amazon eBay $1799.95 |
| 400REOZJD | 400 KW DIESEL GENSET | 1 | Service part / kit | Amazon eBay $79995.00 |
| 500EOZCS | 500 KW DIESEL COMMERCIAL MARINE GENSET | 1 | Service part / kit | Amazon eBay |
| 500REOZJC | 500 KW DIESEL GENSET | 1 | Service part / kit | Amazon eBay $1799.95 |
| KD1250-4 | 1250 KW DIESEL TIER 4 GENSET | 1 | Service part / kit | Amazon eBay |
| KD1250A | 1250 kW Diesel Genset | 1 | Service part / kit | Amazon eBay |
| KG80 | 80 kW L.P./N.G. Genset | 1 | Service part / kit | Amazon eBay $39.90 |
| KG80R | 80 kW L.P./N.G. Genset | 1 | Service part / kit | Amazon eBay |
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% | 446.0 | 12.6 |
| Prime | 50% | 701.0 | 19.9 |
| Prime | 75% | 979.0 | 27.7 |
| Prime | 100% | 1289.0 | 36.5 |
| Standby | 25% | 446.0 | 12.6 |
| Standby | 50% | 75.33 | 19.9 |
| Standby | 75% | 979.0 | 27.7 |
| Standby | 100% | 1289.0 | 36.5 |
Available documents
Spec sheet (Kohler)Spec sheet — G4-191 1018H (Kohler)Spec sheet — WPC 350REZXD-Submittal-24-02-01 (Kohler)Spec sheet — g4191 (Kohler)Spec sheet — g4297 (Kohler)Reference (Kohler)Reference — 180-450REZX G6109 (Kohler)Reference — 300-500REZX G6178 (Kohler)Reference — G6-39 0918AZ (Kohler)Reference — Kohler-Gas Generators Brochure (Kohler)Parts manual — kohler consolidated price list (Kohler)Parts manual — tp6706 (Kohler)Service manual — TP-6832 1218G (Kohler)