The Quincy G214K30HCD is a truck-mounted air compressor built around a 14 HP Kohler Command Pro engine, 12-Volt electric start, and recoil backup. That dual-start setup is the key advantage for mobile service: you can start the compressor from the truck without relying solely on a pull cord, while the recoil starter remains available if electrical starting power is unavailable. Behind the engine, a two-stage cast iron QT pump, belt drive, horizontal 30-gallon receiver, and 100% duty cycle give this unit the kind of continuous-duty design suited to demanding field work.
The QT pump uses two-stage compression to divide the work between two cylinders, with a finned intercooler cooling the air between stages. That helps the pump manage heat during extended operation and supports its 175 PSI maximum pressure. The cast iron pump body provides rigidity and durability, while the aluminum head helps dissipate heat. Stainless steel reed valves are designed to handle repeated cycling and moisture, and graphite cylinder and head gaskets maintain the seal through temperature changes. A balanced cast iron flywheel helps smooth pump operation while directing cooling air across the assembly, and the belt drive allows the pump to operate at a lower speed than the engine.
This compressor is a practical choice for mobile mechanics, roadside service, fleet maintenance, agricultural work, and contractors who need sustained compressed air where electric power is unavailable. The 12-Volt electric starter requires an appropriate battery and cable, which are not supplied, so the starting system should be planned as part of the truck installation. Because this is a gasoline-powered unit, proper ventilation and exhaust management are essential during operation. The horizontal receiver also provides a vehicle-friendly configuration for installations where a lower, longer footprint is preferred.
Electric Start: Plan for the Battery
Electric start requires a 12V supply, but the battery and cable are not included. Plan the connection through the vehicle’s electrical system or a dedicated battery before installation, especially if a body builder is mounting the compressor.
The recoil starter is also included, providing a manual starting option if the electrical start system is unavailable.
Where It Goes & What It Weighs
Plan for approximately:
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Dimensions: 42" L × 21" W × 40" H
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Weight: 502 lbs
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Receiver: Horizontal
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Tank outlet: 1/2"
For vehicle mounting, confirm deck or compartment clearance and account for the compressor’s weight within your vehicle’s payload, axle and gross-weight limits. Have the body builder or qualified installer determine appropriate mounting and load distribution.
The gasoline engine requires adequate ventilation and must not be operated in a closed workshop, basement or sealed vehicle compartment due to exhaust and carbon monoxide.
What the Two-Stage Pump Adds
The two-stage pump compresses air in two stages, with a fin-and-tube intercooler between them. This helps manage the temperature of the air before the second stage raises pressure to 175 PSI.
The pump uses cast iron construction with an aluminum head, stainless steel reed valves, a cast-iron flywheel and graphite gaskets. The belt drive connects the engine to the pump, while the flywheel provides airflow across the cooling components.
Perfect For
- Mobile mechanics and roadside service trucks
- Fleet and utility maintenance vehicles
- Agricultural and remote work without mains power
- Contractors using pneumatic tools away from a building
- Shops needing a secondary mobile air source
What’s in the Box — and What’s Not
Included:
- 14 HP Kohler Command Pro engine
- Electric and recoil starting
- Two-stage cast-iron belt-drive pump
- Belt guard
- Fin-and-tube intercooler
- Air filter
- Pressure gauge
- Oil sight glass
- Horizontal receiver
Not included:
- Starting battery and cable
- Vehicle-specific mounting frame or brackets
- Hose and reel
- Air-treatment equipment
Specifications
| Engine |
Kohler Command Pro, 14 HP, gasoline |
| Starting |
12-Volt button start with recoil backup (battery and cable not included) |
| Pump |
Two-stage, cast iron with aluminum head, belt drive, splash lubricated |
| Duty cycle |
100% |
| Maximum pressure |
175 PSI |
| Tank |
30-gallon horizontal receiver |
| Tank outlet |
1/2" |
| Dimensions |
42" long × 21" wide × 40" high |
| Weight |
502 lbs |
| Delivered air |
Not published here — ask us and we will confirm it |
Certification, Stated Plainly
The specification sheet lists ASME for the pressure vessel and UL and CSA on the electrical side. These certifications apply to the tank and electrical components; they do not cover how the compressor is mounted or installed on your vehicle.
If your fleet policy, insurer or body certifier has requirements for mounting, guarding or exhaust routing, confirm them against your specific vehicle build. The compressor’s certifications do not address those installation requirements.
Warranty
The compressor carries a 1-year factory warranty, extending to Quincy’s 3-year “No Bull” warranty when its conditions are met. The EWK-3 Maintenance Kit must be purchased with the compressor, and the unit must be registered with Quincy.
The Kohler engine has its own manufacturer warranty, separate from the compressor warranty, so engine claims follow Kohler’s applicable terms and process. Warranty Claims
Warranty Details
Freight & Delivery
Palletized freight to the lower 48. Plan for a forklift, pallet jack or carrier-terminal pickup with a suitable trailer. Residential delivery carries an additional fee, and freight is quoted live at checkout.
Inspect the engine shroud, belt guard, gauges and tank before signing. Photograph any damage and record it on the bill of lading while the driver is present.
