Powering Ahead
Generac ensures superior quality by designing and
manufacturing most of its generator components, such as alternators, enclosures, control systems and
communications software. Generac also makes its own
spark-ignited engines, and you’ll find them on every Generac gaseous-fueled generator. We engineer and manufacture them from the block up — all at our facilities throughout Wisconsin. Applying natural gas and LP-fueled engines to generators requires advanced engineering expertise to ensure reliability, durability and necessary performance. By designing specifically for these dry, hotter-burning fuels, the
engines last longer and require less maintenance. Building our own engines also means we control every step of the supply chain and delivery process, so you benefit from single-source responsibility.
Plus, Generac Industrial Power’s distribution network
provides all parts and service so you don’t have to deal with third-party suppliers. It all leads to a positive owner
experience and higher confidence level. Generac sparkignited engines give you more options in commercial and industrial generator applications as well as extended run time from utility-supplied natural gas
- Oil Drain Extension
- Heavy Duty Air Cleaner
- Fan Guard
- Stainless Steel Flexible Exhaust Connection
- Factory Filled Oil and Coolant
- Critical Exhaust Silencer (Enclosed Only)
- Primary and Secondary Fuel Shutoff
- Closed Coolant Recovery System
- UV/Ozone Resistant Hoses
- Factory-Installed Radiator
- Radiator Drain Extension
- 50/50 Ethylene Glycol Antifreeze
- Battery Charging Alternator
- Battery Cables
- Battery Tray
- Rubber-Booted Engine Electrical Connections
- Solenoid Activated Starter Motor
- GENprotect™
- Class H Insulation Material
- 2/3 Pitch
- Skewed Stator
- Permanent Magnet Excitation
- Sealed Bearing
- Amortisseur Winding
- Full Load Capacity Alternator
- Internal Genset Vibration Isolation
- Separation of Circuits - High/Low Voltage
- Separation of Circuits - Multiple Breakers
- Wrapped Exhaust Piping (Enclosed Only)
- Standard Factory Testing
- 2 Year Limited Warranty (Standby Rated Units)
- 1 Year Limited Warranty (Prime Rated Units)
- Silencer Mounted in the Discharge Hood (Enclosed Only)
- Rust-Proof Fasteners with Nylon Washers to Protect Finish
- High Performance Sound-Absorbing Material (Sound Attenuation Enclosures)
- Gasketed Doors
- Stamped Air-Intake Louvers
- Upward Facing Discharge Hoods (Radiator and Exhaust)
- Stainless Steel Lift Off Door Hinges
- Stainless Steel Lockable Handles
- RhinoCoat™ - Textured Polyester Powder Coat Paint
- Make: Generac
- Cylinder #: 12
- Type: V
- Displacement - L (in3): 21.9 (1,336.42)
- Bore - mm (in): 128 (5.03)
- Stroke - mm (in): 142 (5.6)
- Compression Ratio: 10.0:1
- Intake Air Method: Turbocharged/Aftercooled
- Number of Main Bearings: 7
- Connecting Rods: Steel Alloy
- Cylinder Head: Cast Iron - OHV
- Cylinder Liners: Cast Steel Alloy
- Ignition: Electronic
- Piston Type: Aluminum Alloy
- Crankshaft Type: Forged Steel Alloy
- Lifter Type: Solid
- Intake Valve Material: High Temp Steel Alloy
- Exhaust Valve Material: High Temp Steel Alloy
- Hardened Valve Seats: High Temp Steel Alloy
- Governor: Electronic
- Frequency Regulation (Steady State): ±0.25%
- Oil Pump Type: Gear
- Oil Filter Type: Twin Full-Flow with Intercooler
- Crankcase Capacity - L (qt): 30.0 (31.7)
- Cooling System Type: Pressurized Closed Recovery
- Fan Type: Pusher
- Fan Speed - rpm 1,165
- Fan Diameter - mm (in): 1,117 (44)
- Fuel Type: Natural Gas
- Carburetor: Down Draft
- Secondary Fuel Regulator: Standard
- Fuel Shut Off Solenoid: Standard (Dual)
- Operating Fuel Pressure - kPa (in H2O): 2.7 - 3.7 (11 - 15)
- Optional Operating Fuel Pressure - kPa (in H2O): 1.7 - 2.7 (7 - 11)
- System Voltage: 24 VDC
- Battery Charger Alternator: Standard
- Battery Size: See Battery Index 0161970SBY
- Battery Voltage: (2) - 12 VDC
- Ground Polarity: Negative
Additional information
| Engine | Engine Type Generac 12 cylinders V Displacement 1,336.42 cu. in. (21.9 L) |
|---|---|
| Dimensions | Length 207.4 in. (5,268 mm) Width 71.0 in. (1,803 mm) Height 80.0 in. (2,032 mm) Weight Steel: 10,428 lb. (4,730 kg); Aluminum: 9,298 lb. (4,217 kg) |





