Find, Fit, and Finish Faster with Graco GMAX7900 ProContractor Pump (17H825) Series Gas Airless Sprayer Parts Essentials
When downtime can cost hundreds per hour, fleet managers trust GMAX II 7900 ProContractor—Graco’s 6.5 hp Honda-powered workhorse that pushes 2.2 gpm through tips up to 0.045″. Its beating heart is 17H825 Endurance™ Vortex MaxLife pump, a rotating-rod lower engineered to last three times longer than flat-stroke steel. Your graco sprayer can only run as strong as the parts that feed, filter and atomize the coating, so insist on factory components.
Why Choose Genuine Graco GMAX 7900 ProContractor Pump (17H825) Parts?
- Vortex Rod Technology—the rod spins 360° every stroke, distributing wear evenly and stretching service intervals past 700 gal.
- MaxLife Carbide Seats—tungsten-carbide + chrome-oxide overlay survives silica-filled block filler that shreds aftermarket steel.
- ProConnect 2 Swap-Out—door latch lets one tech trade a seized pump for a spare in 60 seconds—no vise, no lost margin.
- SmartControl 3.0 Sync—factory sensors inside the lower feed live pressure and flow data to BlueLink, avoiding false alarms common with clone pumps.
- Full Graco Warranty.
Core Pump & Sprayer Specifications
| Attribute | Specification |
|---|---|
| Max Working Pressure | 3 300 psi / 227 bar |
| Max Flow Rate | 2.2 gpm / 8.3 l min |
| Recommended Tip (1 gun) | 0.045″ RAC X LP or WideRAC |
| Engine | Honda GX 6.5 hp, low-oil shutdown |
| Fluid Inlet / Outlet | 1-5/16″ UN-2A / 3/8″ NPSM (fits BlueMax II hose) |
Top-Moving OEM Parts in the 17H825 Breakdown
- 17H825 Complete Vortex Pump—drop-in lower with rod, packings, seats, balls & glands installed.
- 17A578 MaxLife™ Rebuild Kit—carbide seats + V-Max Blue packings; renews a tired pump in under 30 minutes.
- 240797 BlueMax II 50-ft Hose—3⁄8″ I.D. rated 3 300 psi; pair with ¼″ whip for less wrist strain.
- 19Y354 Contractor PC Gun—adjustable four-finger trigger, accepts every RAC X guard.
- 17G180 RAC X LP 517 Tip & Guard—spray 600 sq ft/hr at 1 300 psi; save 18 % paint vs. standard 517.
- 24U579 FastFlush 2.0 Kit—cleans the Vortex pump 4× faster using half the water.
Sprayers & Texture Rigs That Share These Parts
Graco’s HD family shares pumps, seats, filters and guards, so one spare shelf protects multiple rigs:
- GMAX II 7900 IronMan—identical pump & clutch geometry.
- TexSpray Mark X HD—electric frame uses the same Vortex pump for heavy mud.
- LineLazer V 3900 / 5900—ball/seat kits and blue 60-mesh filters cross-reference.
- Ultra Max II 1595—BlueMax hoses, RAC X tips and Contractor PC gun swap 1-for-1.
- Graco 650 gas airless sprayer—shares graco suction set, drain valve and inlet strainer with 7900.
Field-Proven Maintenance Blueprint
- Color-Code Consumables—blue bin = Vortex pump parts; red = standard pumps; yellow = graco airless sprayer accessories.
- Flush Warm—110 °F water dissolves latex 30 % quicker; FastFlush mode spins the rod for extra turbulence.
- Use Pump Armor™ Overnight—stops rust inside the chromed rod bore in humid Gulf Coast trailers.
- Log Pump Hours—swap packings at 500 hrs (latex) or 250 hrs (block-filler). Sharpie hours on the roll-cage weekly.
- Store Hoses Flat—BlueMax II memory is low, but tight coils can blister under 3 300 psi.
Frequently Asked Questions
Will 17H825 fit my 2016 GMAX II 7900?
Yes—Graco kept the clutch and frame bolt pattern unchanged from 2014 onward.
What mesh filter for elastomeric?
Use 30-mesh yellow Easy-Out; anything finer clogs under high solids.
Can I retrofit this pump into an electric Mark V?
No—the Mark V uses a shorter stroke; choose pump 17J817 instead.
Ready to Swap-In Power & Swap-Out Downtime?
Click Add to Cart to bundle the 17H825 Vortex pump, BlueMax hoses, and Contractor PC gun. Get it fast, install in minutes, and spray without looking back.