The Grex X40NS.14 1.4mm Nozzle Kit, for X4000 Spray Gun is a genuine replacement nozzle kit for the Grex X4000 platform. This is a spray gun nozzle kit designed for replacing or changing the spray setup on a Grex X4000 spray gun. Model Number: X40NS.14. If you already own an X4000 paint sprayer and need the correct 1/16" (1.4 mm) setup, this is the part that matters.

On a spray gun, nozzle size is not a throwaway spec. It directly affects how material flows, how the gun atomizes, and how the finish lays down. A 1.4 millimeter nozzle kit gives you a defined setup option for your spray application, which is why matching the right kit to the material and job matters more than trying to make the wrong nozzle size work.

This Grex kit is product-specific rather than universal, and that is a good thing. Instead of sorting through generic paint sprayer parts and hoping for fit, you are buying a Grex replacement part made for the X4000 spray gun. That means a cleaner path when you are servicing the gun, replacing worn components, or setting up a dedicated spray gun configuration for repeat work.

For painters and finish users, parts support matters almost as much as the spray gun itself. A proper nozzle kit helps keep your spray pattern consistent and keeps downtime down when a setup is worn or damaged. If your work depends on keeping an X4000 ready for production, having the correct Grex nozzle kit on hand is just practical.

The fit story here is simple: this kit is for the Grex X4000 spray gun. That makes it relevant for users who already run that Grex paint sprayer and want OEM-matched replacement parts instead of trial-and-error aftermarket pieces.

Who should buy it? Owners of a Grex X4000 spray gun, especially painters, finish shops, and serious DIY users who want the right 1.4 millimeter spray gun nozzle kit for maintenance or setup changes. If you do not have an X4000, this is the wrong part. If you do, this is the kind of small part that can make the difference between spraying and standing around.

Grex X40NS.14 1.4mm Nozzle Kit, for X4000 Spray Gun: buy the right part, skip the guessing

If you run a Grex X4000, this is the kind of replacement part that keeps the gun useful instead of turning a small issue into a full stoppage.

• Who it's for: X4000 owners who need a 1.4 millimeter spray gun nozzle kit for maintenance or a specific setup.
• Why it stands out: It is a model-specific Grex part, which is usually the smarter move than gambling on a generic paint sprayer replacement.
• Worth knowing: The data confirms the nozzle size and X4000 fit, but it does not clearly list every individual component in the package, so buy it as a nozzle kit replacement rather than assuming extra parts beyond the kit designation.

• What spray gun is this nozzle kit for? It is designed for the Grex X4000 spray gun.
• What size is this Grex nozzle kit? This version is a 1.4 millimeter nozzle kit.
• Is this a universal paint sprayer nozzle kit? No. The available product data identifies it specifically for the Grex X4000 spray gun.
• Where is it made? Supplementary product data lists Taiwan as the country of manufacture.