Part number 757-055 is an end cap designed to seal or close off the open end of a tube, manifold, or housing on compatible PowrLiner equipment. This component prevents fluid leakage, excludes contaminants, and maintains system pressure in critical fluid passages. Replacing a cracked, damaged, or missing end cap restores system integrity and prevents costly fluid loss or component damage.
| Part Number | 757-055 |
|---|---|
| Part Description | End Cap |
| Brand | PowrLiner |
| Fits | PowrLiner 2850, 4500, 550, 1800M, 2800M, 4000, 4900 XLT, 4900, 4950, 5000, 6000, 6900 XLT SP, 6900 XLT, 6950, 800, 8900 XLT SP, 8900 XLT, 8900, 4955, 6955, 8955, 5500 |
| Condition | New |
The 757-055 End Cap is a sealing component used to close off fluid passages, tube ends, or manifold ports on compatible PowrLiner line stripers. It ensures that pressurized fluid is contained within the intended flow path, preventing leaks that could lead to pressure loss, messy operation, or hazardous conditions.
End caps are subject to stress from pressure cycles, chemical exposure, and vibration. A cracked, warped, or missing end cap can cause fluid leakage, air ingestion, and loss of system pressure. Replacing the end cap restores a leak‑free seal and maintains the integrity of the fluid delivery system.
| Sealing | Closes off tube ends and manifold ports to prevent leaks |
|---|---|
| Pressure retention | Maintains system pressure by containing fluid |
| Contaminant exclusion | Prevents dirt and debris from entering fluid passages |
| Cracks / breakage | Visible damage compromising the seal |
|---|---|
| Fluid leaks | Seepage around the end cap during operation |
| Warping / deformation | End cap no longer fits snugly or seals properly |
| Missing end cap | Cap absent, leaving the fluid path open |
Part number 757-055 is compatible with the following PowrLiner models. Always confirm fitment using the correct parts diagram for your exact model and serial number.
| Model | Component |
|---|---|
| PowrLiner 2850 | End Cap |
| PowrLiner 4500 | End Cap |
| PowrLiner 550 | End Cap |
| PowrLiner 1800M | End Cap |
| PowrLiner 2800M | End Cap |
| PowrLiner 4000 | End Cap |
| PowrLiner 4900 XLT | End Cap |
| PowrLiner 4900 | End Cap |
| PowrLiner 4950 | End Cap |
| PowrLiner 5000 | End Cap |
| PowrLiner 6000 | End Cap |
| PowrLiner 6900 XLT SP | End Cap |
| PowrLiner 6900 XLT | End Cap |
| PowrLiner 6950 | End Cap |
| PowrLiner 800 | End Cap |
| PowrLiner 8900 XLT SP | End Cap |
| PowrLiner 8900 XLT | End Cap |
| PowrLiner 8900 | End Cap |
| PowrLiner 4955 | End Cap |
| PowrLiner 6955 | End Cap |
| PowrLiner 8955 | End Cap |
| PowrLiner 5500 | End Cap |
End cap issues may involve associated components. When servicing the end cap on your PowrLiner, these parts are commonly inspected or replaced at the same time.
Many end caps use integrated seals; inspect and replace if worn.
Check for cracks or damage at the sealing surface.
Hardware that secures the end cap may be corroded; replace if necessary.
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