Titan part 0537512A is a replacement down tube used to transfer paint/striping material from the hopper to the pump inlet on compatible PowrLiner models. This restores proper fluid flow and helps prevent cavitation or loss of pressure.
| Part Number | 0537512A |
|---|---|
| Part Description | Down Tube (fluid intake tube) |
| Brand | Titan |
| Fits | PowrLiner 4500, 5500, 3500 72v, 3000, 3500s |
| Condition | New |
The Titan 0537512A Down Tube is a direct‑replacement fluid intake tube that connects the material hopper to the pump inlet. On compatible Titan PowrLiner stripers, this tube ensures a steady supply of paint or marking material without air ingestion or flow restriction.
A cracked, corroded, or poorly sealed down tube can cause loss of prime, spitting, reduced pressure, or erratic line striping. Replacing the tube restores proper suction and eliminates air leaks.
| Fluid transfer | Delivers paint from hopper to pump inlet |
|---|---|
| Sealing | O‑rings prevent air entry and prime loss |
| Structural support | Holds hopper alignment and vibration damping |
| Visible cracks / holes | Leaks material or sucks air into system |
|---|---|
| Loss of prime | Pump runs but no material flows |
| Corrosion / rust | Flaking metal can clog pump or spray tip |
| Damaged o‑ring grooves | Seal cannot be restored with o‑rings alone |
Titan part 0537512A is compatible with the following Titan PowrLiner models. Always verify fitment using the correct parts diagram for your exact model and revision.
| Brand / Model | Component |
|---|---|
| PowrLiner 3000 | Down tube assembly |
| PowrLiner 3500 | Down tube assembly |
| PowrLiner 3500s | Down tube assembly |
| PowrLiner 3500 72v | Down tube assembly |
| PowrLiner 4500 | Down tube assembly |
| PowrLiner 5500 | Down tube assembly |
Loss of prime or erratic flow is often tied to more than one component. When servicing the down tube, these parts are commonly inspected at the same time.
Dried or cracked hopper outlet seal causes air leaks and prime loss.
Clogged strainer restricts flow – clean or replace with tube service.
Soft or collapsed suction hose mimics down tube failure.
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