PolarStar Fusion R107 Solenoid Valve
PolarStar Fusion R107 Solenoid Valve
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DETAILS
DETAILS
- description
Solenoid valves are the one genuinely consumable component in an electronic HPA engine. They actuate on every single shot, and after enough cycles they wear — which shows up as an engine that fires intermittently, sounds different, or stops cycling altogether.
The good news is that it is a replaceable part rather than a dead engine. A Fusion that has stopped working is very often a solenoid away from being fine, which is a considerably better outcome than the noise it makes suggests.
The R107 is the valve for the Fusion platform. If you run a Fusion seriously, or you are a site or team with several, having one on the shelf turns a lost weekend into a bench job.
Specifications
| Specification | Detail |
|---|---|
| Type | Solenoid valve |
| Model | R107 |
| Fits | PolarStar Fusion engines |
| Role | Primary service and wear part |
| Brand | PolarStar |
Good to know before you buy
This is the part to suspect first if a Fusion has become intermittent or stopped cycling — before assuming the engine is finished.
Fitting means opening the engine. If you are not confident, we handle Fusion servicing here.
Frequently asked questions
How do I know if my solenoid has failed?
Typical symptoms are intermittent firing, a change in the sound of the engine, or no cycling at all. Before writing off a Fusion, this is the first thing to check.
Is it hard to replace?
It means opening the engine. Straightforward if you have done it before; worth bringing to us if not.
How long do they last?
They actuate on every shot, so lifespan depends entirely on round count. Heavy users should treat it as a consumable rather than a permanent part.
Should I keep a spare?
If you play regularly or run several engines, yes. It is the difference between a lost game day and a ten-minute fix.