Graco Mark IV Hi-Boy Sprayer Parts List

When it comes to high-performance airless spraying, the Graco Mark IV Hi-Boy Sprayer stands as a trusted workhorse for professional contractors tackling large-scale commercial and residential painting jobs. But even the best equipment needs regular maintenance and the occasional part replacement to ensure long-term productivity and performance. That’s where Sprayersandparts.com comes in—your one-stop shop for sourcing genuine Graco Mark IV Hi-Boy sprayer parts list components quickly, accurately, and affordably.

Whether you're a seasoned pro or a new contractor, getting the right Graco parts the first time matters. That’s why thousands of professionals turn to us when performance and reliability are non-negotiable.

Why Choose Genuine Graco Mark IV Hi-Boy Sprayer Parts?

Choosing OEM (Original Equipment Manufacturer) components isn’t just about brand loyalty—it’s about ensuring your sprayer operates with maximum efficiency, minimal downtime, and uncompromised safety. Here’s what sets Graco Mark IV Hi-Boy parts apart from cheaper, aftermarket imitations:

✔ Built to Exact Tolerances

Genuine Graco parts are engineered with precise tolerances that align perfectly with the original factory specs. This means easier installation, tighter seals, and longer operational lifespans. You won’t have to worry about ill-fitting nozzles or inconsistent spray patterns due to inferior components.

✔ Chemical Compatibility & Pressure Ratings

Graco parts are rigorously tested for compatibility with a wide range of coatings—including latex, elastomerics, and block fillers—as well as for their performance under high-pressure conditions. Many aftermarket parts fail to meet the rigorous PSI and viscosity demands of professional coatings, which can lead to catastrophic failure in the field.

✔ Backed by Manufacturer Warranties

Every Graco OEM part purchased through Sprayersandparts.com is backed not only by Graco’s own limited warranties but also by our expert product support. We stand by every item we ship, and our team is here to help if you run into questions or need a fast replacement.

Full-Featured Listings With All the Specs You Need

At Sprayersandparts.com, each item in our Graco Mark IV Hi-Boy sprayer parts list comes with a detailed product breakdown. You’ll get complete visibility into:

Material Composition – Know if you're buying stainless steel, carbide, PTFE, or polymer-grade components.
Dimensions & Thread Specs – Avoid guesswork when replacing fittings, filters, seals, or hoses.
Pressure Limits – Confirm that each part meets or exceeds the operating pressure of the Mark IV Hi-Boy (up to 3300 PSI for most components).
Part Cross-Compatibility – Useful for matching components across other units like the Graco Ultra Max II, LineLazer 3400, or Graco Project Painter Plus.

Need to upgrade your system with accessories like a Graco whip hose, a spray tip guard, or filters? All specifications are clearly listed to ensure seamless integration.

Fast Turnaround and Expert Support You Can Count On

Time is money on the job site. That’s why orders confirmed by 12 PM Central Time are processed and shipped within 24 hours from Graco warehouse (Terms & Conditions apply). This means faster delivery across the country, fewer delays, and more time spent on spraying—not waiting.

Need help matching parts or identifying a worn component?

Our team of veteran paint sprayer technicians is on standby to assist with:

Part number verification
Torque specs
Pressure ratings
Sizing and fitment advice
Lubricant and seal kit compatibility

Pro Tips for Long-Term Reliability

Regular maintenance and smart part management can dramatically reduce downtime and extend the life of your Graco Mark IV Hi-Boy sprayer. Here are a few pro tips from our in-house technicians:

Schedule Regular Service Intervals

Logging service hours helps identify when it’s time to replace high-wear components like pump seals, inlet strainers, and spray tips before they fail mid-job.

Pair Seal Kits With Lubricants

Each time you install a Graco seal kit, use a fresh application of pump armor or TSL lubricant to extend the life of the pack-out assembly.

Keep Spare Spray Gun Parts on Hand

Avoid costly work stoppages by stocking essential Graco spray gun parts like gaskets, needle assemblies, and trigger kits for your Graco AirPro or Contractor PC gun.

Use Color-Coded Storage Bins

Differentiate between similar parts—like those for the Graco 3400 Line Striper vs. the Mark IV Hi-Boy—using labeled, color-coded bins. It’s a small step that can save hours of confusion during setup or repairs.

Popular Parts for the Graco Mark IV Hi-Boy Sprayer

We carry a full inventory of Graco Mark IV Hi-Boy parts including:

Pump Repair Kits
Piston Rods and Packings
Intake Valves and Seats
Motor Brushes and Control Boards
Pressure Control Knobs and Transducers
Manifolds and Pressure Hoses
Gun Filters, Tip Guards, and Spray Tips
Graco Airless Tips (RAC X, FFLP, and LTX series)

We also stock Graco extension tools, hose reels, whip hoses, tip cleaning kits, and power flush adapters—everything you need to keep your rig running strong.

Boost Your Jobsite Efficiency Today

Choosing the right Graco Mark IV Hi-Boy sprayer parts list isn’t just about maintenance—it’s about unlocking your sprayer’s full potential. From the Graco AirPro spray gun to advanced pressure control modules, every part you purchase from Sprayersandparts.com helps you stay on schedule, reduce waste, and deliver flawless finishes.

✅ Reliable Components
✅ Expert Support
✅ Fast Nationwide Shipping

Whether you're replacing a single spray tip or outfitting an entire fleet with Graco sprayers and accessories, trust Sprayersandparts.com to deliver the professional-grade performance your team depends on.

Ready to take your sprayer to the next level?
Browse our full selection of Graco Mark IV Hi-Boy sprayer parts and experience the Sprayersandparts.com difference today.