Description
This piston guide is a direct-fit replacement for Wagner part 508665, used in Sherwin Williams SW419 (EPX-style), Sherwin Williams SW623 (EPX-style), SprayTech EPX 2155. It installs in the original position with no modification.
Common reasons this piston guide is replaced:
- Wear or fatigue in normal service
- Corrosion or mechanical damage
- Replacement during a scheduled rebuild
Manufactured to OEM-equivalent dimensions for proper fit and performance. Compatible equipment models are listed in the Compatible Equipment section below, where available.









