The Castair PUK9008G is Castair's highest-output gas contractor compressor, powered by a Honda GX270 engine with an 8-gallon twin-tank configuration. It delivers 18.6 CFM at 100 PSI and 23.9 CFM free air delivery. At $2,329.00 and 250 lbs shipped, this machine is built for contractors running multiple heavy-draw tools simultaneously: large framing operations with multiple guns, continuous sandblasting, spray equipment, or any application where an 11.6 CFM compressor cannot keep pace with demand. The GX270 engine is the correct choice when you need sustained output, not peak output.
GX270 vs. GX160 — The Performance Gap
The Honda GX270 displaces 270cc versus the GX160's 163cc — 65% more displacement. More displacement means more torque at 1,380 pump RPM, which means the GX270 sustains full pump output under continuous load without hunting or losing RPM under draw. Where the GX160-powered units deliver 11.6 CFM at 100 PSI, the GX270 in the PUK9008G delivers 18.6 CFM at the same pressure — a 60% increase in usable output. For a framing crew running three nail guns simultaneously, or a body shop running a spray gun and orbital sander at the same time, that 7 CFM gap is the difference between a compressor that keeps up and one that becomes a bottleneck.
Key Specifications
- Engine: Honda GX270
- Tank configuration: 8-gallon twin tank
- CFM at 0 PSI (free air): 23.9
- CFM at 100 PSI: 18.6
- Pump RPM: 1,380
- Max pressure: 125 PSI (single stage)
- Drive type: Belt drive, oil-lubricated cast-iron pump
- Tank certification: ASME with safety valve installed
- Dimensions (LxWxH): 42" x 18" x 28"
- Shipped weight: 250 lbs
- Price: $2,329.00
Features
- Honda GX270 engine: Commercial OHV, 270cc, cast iron cylinder sleeve, pressure lubrication — Honda's commercial platform for continuous duty
- Cast-iron belt-drive pump: Long service life, oil-lubricated, not direct-drive aluminum
- Head unloaders: Better cooling and reduced engine load at shutdown versus dump valves
- Finned copper discharge tube: Heat dissipation and structural strength at the discharge point
- V-cylinder pump design: 360-degree cooling around cylinder heads
- Two-piece connecting rod with independent wrist pin: Proper lubrication and reduced side loading
- Three-ring piston: Oil control, compression, and wiper rings
- Ball bearings at both crankshaft ends: Reduced friction, longer bearing life
- Paper filter/silencer: Clean intake air, quieter operation
- ASME powder-coated twin tank: Safety valve installed
- Easy-read sight glass: Visual oil level check
Gas Contractor Compressor Lineup
- PUK5508G — Honda GX160, 8-gal twin, 11.6 CFM @ 100 PSI, 38x18x26", 185 lbs ($1,467.10)
- PUK5520G — Honda GX160, 20-gal portable, 11.6 CFM @ 100 PSI, 33x18x33", 195 lbs ($1,482.40)
- PUK9008G — Honda GX270, 8-gal twin, 18.6 CFM @ 100 PSI, 42x18x28", 250 lbs ($2,329.00) — this unit
When Does a Shop Need the PUK9008G?
When your job site consistently outpaces an 11.6 CFM compressor, the PUK9008G is the answer. Concrete tilt-up work with large pneumatic rams, continuous production framing with multiple guns firing simultaneously, auto body sandblasting, or any situation where the GX160 units are running continuously and still cannot maintain working pressure. The 8-gallon twin tank is the same footprint as the PUK5508G, but the GX270 engine is physically larger — accounting for the longer 42-inch overall length compared to 38 inches on the GX160 unit.
Technical Specifications
- Model Number: PUK9008G
- Manufacturer: Castair (Cast Air)
- Engine: Honda GX270
- Tank capacity: 8 gallons, twin tank
- CFM @ 0 PSI: 23.9
- CFM @ 100 PSI: 18.6
- Pump RPM: 1,380
- Drive: Belt drive
- Tank certification: ASME
- Dimensions (LxWxH): 42" x 18" x 28"
- Shipped weight: 250 lbs
- Price: $2,329.00
What's in the Box
- Castair PUK9008G complete gas compressor unit
- Honda GX270 engine installed and configured
- ASME 8-gallon twin tank with safety valve installed
- Paper filter/silencer
- Cast-iron pump with oil
Why Buy From Air Compressor Factory Direct?
We carry the full Castair gas contractor lineup and can help you select the right unit based on your actual job site CFM requirements. The PUK9008G is the serious option — if you want to confirm it is what your application needs versus the lighter GX160 units, call us. Free shipping on qualifying orders. Full Honda engine warranty and Castair compressor warranty.
Call 866-217-0063 for quick answers and help!
