Built for the Ultra XT platform, the 20B413 restores smooth crank motion and stable pressure by replacing the worn pump housing and sleeve in one matched assembly. It’s a direct fit on Ultra 490 XT and Ultra 495 XT frames (Stand, Lo Boy, and Hi Boy), so there’s no machining or shimming in the field; just swap, torque, and spray. The assembly includes the fasteners and shims called out in the Graco parts list (items 4, 7, and 8: 20B534 screw, 19C534 wave spring washer, 19C535 shim), helping techs avoid part-hunt delays. If your rig shows excessive side play, noisy stroke, or pressure “hunting,” a fresh housing and sleeve is the fastest route to factory performance across interior latex, primers, and acrylics. It’s the kind of high-value upgrade pros expect from **graco paint machines**, and a smart reliability refresh for any **graco airless paint sprayer** in your fleet.
The Graco 20B413 is an OEM “pump housing with sleeve” that re-establishes correct rod alignment and bearing support in the Ultra XT drive. By installing a Graco genuine factory housing instead of chasing individual wear items, you eliminate stack-up errors that can cause cavitation, uneven atomization, and premature packing failure. The parts list shows the housing ships complete and includes the hardware noted as items 4, 7, and 8—so you’re not mixing old fasteners into a fresh drive.
These fitments are confirmed in the Ultra XT parts manuals and distributor breakdowns for each frame style, ensuring a straight swap with no adapters.
Drive noise, inconsistent pressure, and rod scoring often trace back to wear inside the housing bore. Replacing the entire housing and sleeve resets tolerances to factory specification, which stabilizes the pressure curve and protects the lower pump saving tips, seals, and time. Compared with piecemeal fixes, a matched assembly minimizes comeback risk and keeps inventory simpler for shops ordering core spray equipment parts for multiple crews.
Commercial repaint crews, facilities teams, and finish shops running graco fine finish sprayers or architectural rigs will see fewer stoppages and more predictable results, especially on trim, doors, and broad interior walls where pattern quality is scrutinized.
Stock one 20B413 per Ultra XT unit so a worn housing doesn’t sideline a job. Bundle with lower-end wear items and filtration to protect the fresh drive train. For cabinet or millwork booths, pairing a healthy drive with a properly sized tip and clean filters keeps your airless graco spray gun delivering a crisp fan edge shift after shift.
If you purchase through Sprayers & Parts you’ll see the same part reference and fits across listings for each frame (Stand, Lo Boy, Hi Boy). That consistency helps procurement teams standardize part numbers across all the **graco paint machines** on the truck and avoid downtime waiting for special-order components.
Whether you’re maintaining a single rig or a multi-crew operation, the 20B413 Pump Housing with Sleeve is the simplest, most reliable way to bring an Ultra XT drive back to factory behavior—and to keep your **graco airless paint sprayer** producing clean, even results on every coat.
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