Service parts for the 80REZG
Grouped by system, with how many of each the parts manual calls for.
Prices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.
Specifications
| Fuel | Natural Gas, LP Gas |
|---|---|
| Frequency | 60.0 Hz |
| Standby power | 81 kW |
| Standby kVA | 101 |
| Emissions | EPA-Certified for Stationary Emergency Applications |
| Controller | Decision-Maker 3+, Decision-Maker 3000, Decision-Maker 550 |
| Oil capacity | 7.6 L |
| Alternator | Fast-Response II (FRII) |
| Voltage options | 120/208 V, 127/220 V, 120/240 V, 139/240 V, 220/380 V, 277/480 V, 347/600 V |
| Phase | 3 |
| Rated current | 122 A |
| Power factor | 0.8 |
| Battery group | 1 |
| Battery cranking | 630 CCA |
| Battery voltage | 12 V |
| Battery quantity | 1 |
| Coolant capacity | 25.7 L |
| Engine jacket water | 10.0 L |
| Max ambient | 50 °C |
| Dimensions (L×W×H) | 3506×1156×1696 mm |
| Sound level | 70.0 dBA @ 23 m |
Maintenance & consumables
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Oil filter | GM16703 | Amazon eBay $58.00 NAPA $3.59 |
Service specifications
34| Type | Item | Value | Unit | Condition |
|---|---|---|---|---|
| Torque | 1-12 fastener | 283.0 (209) | Nm (ft. lb.) | Assembled into cast iron or steel, Grade 2 or 5 |
| Torque | 1-8 fastener | 259.0 (191) | Nm (ft. lb.) | Assembled into cast iron or steel, Grade 2 or 5 |
| Torque | 1/2-13 fastener | 60.0 (44) | Nm (ft. lb.) | Assembled into cast iron or steel, Grade 2 or 5 |
| Torque | 1/2-20 fastener | 66.0 (49) | Nm (ft. lb.) | Assembled into cast iron or steel, Grade 2 or 5 |
| Torque | 1/4-20 fastener | 6.8 (60) | Nm (in. lb.) | Assembled into cast iron or steel, Grade 2 or 5 |
| Torque | 1/4-28 fastener | 8.1 (72) | Nm (in. lb.) | Assembled into cast iron or steel, Grade 2 or 5 |
| Torque | 10-24 fastener | 2.9 (26) | Nm (in. lb.) | Assembled into cast iron or steel, Grade 2 or 5 |
| Torque | 10-32 fastener | 2.9 (26) | Nm (in. lb.) | Assembled into cast iron or steel, Grade 2 or 5 |
| Torque | 3/4-10 fastener | 199.0 (147) | Nm (ft. lb.) | Assembled into cast iron or steel, Grade 2 or 5 |
| Torque | 3/4-16 fastener | 222.0 (164) | Nm (ft. lb.) | Assembled into cast iron or steel, Grade 2 or 5 |
| Torque | 3/8-16 fastener | 24.0 (18) | Nm (ft. lb.) | Assembled into cast iron or steel, Grade 2 or 5 |
| Torque | 3/8-24 fastener | 27.0 (20) | Nm (ft. lb.) | Assembled into cast iron or steel, Grade 2 or 5 |
| Torque | 5/16-18 fastener | 13.6 (120) | Nm (in. lb.) | Assembled into cast iron or steel, Grade 2 or 5 |
| Torque | 5/16-24 fastener | 14.9 (132) | Nm (in. lb.) | Assembled into cast iron or steel, Grade 2 or 5 |
| Torque | 5/8-11 fastener | 113.0 (83) | Nm (ft. lb.) | Assembled into cast iron or steel, Grade 2 or 5 |
| Torque | 5/8-18 fastener | 128.0 (94) | Nm (ft. lb.) | Assembled into cast iron or steel, Grade 2 or 5 |
| Torque | 7/16-14 fastener | 39.0 (29) | Nm (ft. lb.) | Assembled into cast iron or steel, Grade 2 or 5 |
| Torque | 7/16-20 fastener | 43.0 (32) | Nm (ft. lb.) | Assembled into cast iron or steel, Grade 2 or 5 |
| Torque | 8-32 fastener | 1.8 (16) | Nm (in. lb.) | Assembled into cast iron or steel, Grade 2 or 5 |
| Torque | 9/16-12 fastener | 81.0 (60) | Nm (ft. lb.) | Assembled into cast iron or steel, Grade 2 or 5 |
| Torque | 9/16-18 fastener | 91.0 (67) | Nm (ft. lb.) | Assembled into cast iron or steel, Grade 2 or 5 |
| Torque | M10 x 1.25 fastener | 31.0 (23) | Nm (ft. lb.) | Assembled into cast iron or steel, Grade 5.8 or 8.8 |
| Torque | M10 x 1.50 fastener | 30.0 (22) | Nm (ft. lb.) | Assembled into cast iron or steel, Grade 5.8 or 8.8 |
| Torque | M12 x 1.50 fastener | 56.0 (41) | Nm (ft. lb.) | Assembled into cast iron or steel, Grade 5.8 or 8.8 |
| Torque | M12 x 1.75 fastener | 53.0 (39) | Nm (ft. lb.) | Assembled into cast iron or steel, Grade 5.8 or 8.8 |
| Torque | M14 x 1.50 fastener | 87.0 (64) | Nm (ft. lb.) | Assembled into cast iron or steel, Grade 5.8 or 8.8 |
| Torque | M14 x 2.00 fastener | 83.0 (61) | Nm (ft. lb.) | Assembled into cast iron or steel, Grade 5.8 or 8.8 |
| Torque | M16 x 1.50 fastener | 132.0 (97) | Nm (ft. lb.) | Assembled into cast iron or steel, Grade 5.8 or 8.8 |
| Torque | M16 x 2.00 fastener | 127.0 (94) | Nm (ft. lb.) | Assembled into cast iron or steel, Grade 5.8 or 8.8 |
| Torque | M18 x 1.50 fastener | 189.0 (140) | Nm (ft. lb.) | Assembled into cast iron or steel, Grade 5.8 or 8.8 |
| Torque | M18 x 2.50 fastener | 179.0 (132) | Nm (ft. lb.) | Assembled into cast iron or steel, Grade 5.8 or 8.8 |
| Torque | M6 x 1.00 fastener | 6.2 (4.6) | Nm (ft. lb.) | Assembled into cast iron or steel, Grade 5.8 or 8.8 |
| Torque | M8 x 1.00 fastener | 16.0 (11) | Nm (ft. lb.) | Assembled into cast iron or steel, Grade 5.8 or 8.8 |
| Torque | M8 x 1.25 fastener | 15.0 (11) | Nm (ft. lb.) | Assembled into cast iron or steel, Grade 5.8 or 8.8 |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Procedures
2Common Hardware Application installation
- Determine entry hole type: round or slotted.
- Determine exit hole type: fixed female thread (weld nut), round, or slotted.
- For round and slotted exit holes, determine if hardware is greater than 1/2 inch in diameter.
- Hardware greater than 1/2 inch in diameter uses a standard nut and SAE washer.
- Hardware 1/2 inch or less in diameter can use a properly torqued whiz nut or spiralock nut.
- Always use a washer between hardware and a slot.
- Always use a washer under a nut.
- Use a washer under a bolt when the female thread is fixed (weld nut).
How to Find Part Numbers operation
- Locate the generator set nameplate to identify the generator set spec number.
- Locate the second nameplate listing accessories to identify installed modules; on some models it is inside the junction box.
- Turn to the Specification Number Index; the first column lists generator set spec numbers.
- Identify the group most likely to include the service part number.
- Find the group variation number at the intersection of the spec number row and group column.
- Page forward to locate that group or find the page in the Table of Contents.
- Find the part on the illustration and note the item number, or find the part description in the parts list.
- Select the part number that corresponds to your group variation using the column on the right side of the parts list table.
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Voltage reconnection
| Voltage | Phase | Connection | Leads | Notes |
|---|---|---|---|---|
| 12-Lead | Alternator Reconnections diagram ADV-5875B-M (page 16) | |||
| 4-Lead | Alternator Reconnections diagram ADV-5875A-M (page 15) |
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
How many kW is the Kohler 80REZG?
The Kohler 80REZG is rated 81 kW standby (101.0 kVA).
What kind of fuel does the Kohler 80REZG run on?
The Kohler 80REZG runs on Natural Gas, LP Gas.
What is the coolant capacity of the Kohler 80REZG?
The Kohler 80REZG cooling system holds 25.7 liters (6.8 US gallons) for the radiator system including the engine, per the manufacturer specification sheet.
What is the oil capacity of the Kohler 80REZG?
The Kohler 80REZG has an engine oil capacity of 7.6 liters (8.0 US quarts), per the manufacturer specification sheet.
How loud is the Kohler 80REZG?
The Kohler 80REZG is rated at 70.0 dBA at 23 m, per the manufacturer specification sheet.
What voltage does the Kohler 80REZG produce?
The Kohler 80REZG is offered in 120/208 V, 127/220 V, 120/240 V, 139/240 V, 220/380 V, 277/480 V, 3-phase.
What battery does the Kohler 80REZG use?
The Kohler 80REZG uses 1 battery, 12 V each, 630 CCA, group 1, per the manufacturer specification sheet.
What alternator comes on the Kohler 80REZG?
The Kohler 80REZG uses a Fast-Response II (FRII) alternator.
What oil filter does the Kohler 80REZG use?
The Kohler 80REZG uses oil filter part number GM16703.
Parts
34model family| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 250081 | Clamp, hose (2) | Hose | Amazon eBay | |
| 253104 | Air filter | Air filter | Amazon eBay | |
| 253107 | Element, Air Cleaner | 1 | Air filter | Amazon eBay $69.00 NAPA $55.23 |
| 291542 | Air filter | Air filter | Amazon eBay | |
| 328006 | Hose, reducer (3.00 in. to 2.50 in. ID) | 1 | Hose | Amazon eBay |
| 359249 | Hose, 45 deg. elbow (3.00 in. ID) | 1 | Air filter | Amazon eBay |
| GM14200 | Mount, Air Cleaner ( 6.76”ID) | 1 | Air filter | Amazon eBay |
| GM16132 | Belt, fan standard | 1 | Belt | Amazon eBay $86.00 |
| GM16531 | Spark plug | 1 | Spark plug | Amazon eBay $8.08 NAPA $5.38 |
| GM16537 | Thermostat, 160 degree | 1 | Oil filter | Amazon eBay $22.50 |
| GM16703 | Filter, oil | 1 | Oil filter | Amazon eBay $58.00 NAPA $3.59 |
| GM19726 | Thermostat | 1 | Thermostat | Amazon eBay |
| GM22171 | Spark plug | 8 | Spark plug | Amazon eBay |
| GM28351 | Filter, oil | 1 | Oil filter | Amazon eBay $19.46 NAPA $9.09 |
| GM38998 | Spark plug | 1 | Spark plug | Amazon eBay |
| GM39428 | Belt, alternator | 1 | Belt | Amazon eBay $15.00 |
| GM42034 | Filter, oil | 1 | Oil filter | Amazon eBay $41.00 |
| GM62309 | Element, air cleaner | 1 | Air filter | Amazon eBay $91.00 |
| GM65427 | Belt, alternator | 1 | Belt | Amazon eBay $79.00 |
| GM66205 | Oil filter | 1 | Oil filter | Amazon eBay |
| GM66788 | Air filter | Air filter | Amazon eBay | |
| GM67400 | Air filter | Air filter | Amazon eBay | |
| GM69427 | Air filter | Air filter | Amazon eBay | |
| GM90280 | Air Cleaner Assy | 1 | Air filter | Amazon eBay |
| GM90281 | Element, Air Cleaner | 1 | Air filter | Amazon eBay $40.00 NAPA $66.17 KuduParts $43.00 |
| GM90680 | Air filter | Air filter | Amazon eBay | |
| GM90681 | Air filter | Air filter | Amazon eBay | |
| GM90682 | Air filter | Air filter | Amazon eBay | |
| GM92138 | Air filter | Air filter | Amazon eBay | |
| GM92140 | Air filter | Air filter | Amazon eBay | |
| M125A | Air filter | Air filter | Amazon eBay | |
| M6923 | Air filter | Air filter | Amazon eBay | |
| M933 | Air filter | Air filter | Amazon eBay | |
| 08020 | F1805 | Service part / kit | Amazon eBay NAPA $152.42 KuduParts $340.00 |
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 |
|---|---|---|---|
| Standby | 7.3 | 1.93 | |
| Standby | 25% | 12.4 | 3.28 |
| Standby | 50% | 18.9 | 4.99 |
| Standby | 75% | 23.5 | 6.21 |
| Standby | 100% | 28.7 | 7.58 |
Available documents
Spec sheet — 80REZG (Kohler)Spec sheet — Kohler-80REZG-spec-sheet (Kohler)Reference (Kohler)Parts manual — Reinstated Enclosures (Kohler)Parts manual — tp6667 (Kohler)Service manual — tp6712 (Kohler)
This page was generated from the 6 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.