Graco Mark X HD ProContractor is the workhorse every large-scale drywall, EIFS, or fire-proofing crew dreams about: a 4 HP MaxPower™ brushless motor driving an Endurance Chromex® pump that blasts 2.1 GPM at 3 300 PSI through a 0.045-in tip—nearly double the flow of a Mark V and light-years ahead of consumer rigs. When uptime is literally your margin, you can’t roll the dice on look-alike seals or bargain guns. Contractors across America trust SprayersAndParts.com for genuine, serial-matched components.

Why Choose Genuine Graco Mark X HD ProContractor Parts?

Precision machining. Rods ground to ±0.001 in keep dead-band below 1 %, eliminating lap marks on Level-5 skim coats.
MaxFlo 2 passages. Oversized ports spin the piston 360° so wear spreads evenly—rated for 10 000 + gallons before first rebuild.
SmartControl 4.0 + ProGuard™. Digital pressure management & surge suppression deliver the flattest fan pattern in the class while protecting boards from bad job-site power.
BlueLink™ telematics. Log gallons, hours, and location from your phone for proactive maintenance—no surprises on the next high-rise bid.

Key Specs at a Glance

Max Flow	2.1 GPM (8 L min-1)
Max Pressure	3 300 PSI / 228 bar
Max Tip (1 Gun)	0.045 in RAC X LTX/LP
Generator Required	5 000 W min
Dry Weight	154 lb Hi-Boy frame

Bottom line: the Mark X can blast 25 000 sq ft of primer or 15 000 sq ft of Level-5 skim in a single shift—slashing labor days off commercial schedules.

Cross-Fit Parts that Shrink Your Inventory Wall

Running a mixed fleet? Genuine Graco engineering means many consumables swap between rigs:

Buy Graco Magnum Project Painter Plus 257025 Parts List—small-rig tip guards, filters and suction tubes double as emergency spares on your Mark X gun.
Graco paint sprayer 495. Shares SmartControl sensors and V-Max packings, so one seal kit covers finish trim and texture crews.
Graco 395 sprayer. Its 0.023-in max tip is perfect for cabinet work; RAC X guards, Easy-Out filters and TSL oil match the Mark X inventory.
Graco Magnum X7 pump. Keep a ProXChange™ pump on the truck for the homeowner line—its inlet seals and discharge seats fit contractor guns in a pinch.

Upgrades & Accessories that Pay for Themselves

Every product page lists dimensions, material grades, and pressure ratings so you can order with confidence:

Graco spray pump parts: full Chromex rod kits, sleeve bearings, and MaxLife seat balls rated for abrasive elastomerics.
RAC X LP graco paint sprayer guard—same fan width at 50 % less pressure means half the overspray and double tip life.
1/2-in BlueMax II hose sets—feed thick intumescent coatings 200 ft without starve lines; add a 3/8-in graco spray pump whip for wrist-saving control.
Heavy-Duty Texture Gun—included in the Mark X kit, rated to 0.051 in tips for multi-spray mud and block-filler jobs.

Five Pro Tips to Triple Pump Life

Use BlueLink™ alerts. Set a 500-gal reminder; change packings before rod scoring starts.
Wet-cup nightly. Two pumps of TSL keep leather packings from drying—costs pennies, saves a $700 piston.
Rotate tips often. Flip or swap every 100 gal; worn orifice ≈ 10 % pressure rise, cooking seals and boards.
Stage a spare gun. A Contractor PC with 0.031 tip finishes the wall while you rebuild the heavy-duty texture gun.
Color-code bins. Separate graco magnum project painter plus parts from high-pressure Mark X fittings—6 a.m. mobilization stays on-track.

Frequently Asked Questions

Can I swap a 495 PC Pro pump into a Mark X housing?

No. Stroke length and rod diameter differ, but seal kits and SmartControl boards cross-fit, letting one service kit cover both rigs.

What’s the smallest tip size the Mark X can handle?

Down to 0.017 in for fine-finish acrylics, but flow advantage disappears below 0.023 in; consider a graco 395 sprayer for cabinet lacquer.

Does the ProContractor hose reel fit the standard Mark X?

Yes—the QuikReel bolt pattern matches both 17E608 (Standard) and 17E609 (ProContractor) frames—upgrade in under 15 min.

Ready to Crush Your Next Deadline?

Add authentic to your cart—plus Graco spray pump parts, fine-finish guns, Magnum X7 pumps, and that Project Painter Plus 257025 kit to hit.

Graco Mark X HD ProContractor Sprayer Parts