Castair TCSP-H-5565-B — Airline Throttle Control for Honda Gas Engines, 5–6.5 HP
The Castair TCSP-H-5565-B is a pneumatic (airline-type) throttle control sized for Honda gas engines in the 5 to 6.5 HP range. This is the smaller engine version of the Cast Air airline throttle control lineup — it handles the same function as the 8–13 HP TCSP-H-0813-B but is configured for the smaller Honda engines common on compact portable compressors. The unit uses air pressure from the compressor''s pressure switch to actuate the engine throttle, pulling it back to idle when the tank is full and releasing it when demand drops the tank pressure below the cut-in point.
At 3.13, this is a wear item that most shops do not think about until it fails — at which point the compressor either runs at full throttle all the time (burning fuel and wearing the engine) or does not throttle up at all (starving for air output). If your 5–6.5 HP Honda-powered compressor is not cycling correctly and the pressure switch checks out, the throttle control actuator is the next thing to look at.
Key Features
- Airline (Pneumatic) Actuation: Air pressure from the pressure switch moves the engine throttle — no mechanical cable to route or adjust
- Honda Engine Fitment: Matched to Honda GX160, GX200, and equivalent engines in the 5–6.5 HP class
- HP Range: 5 to 6.5 HP — for compact portable and small contractor gas-engine compressors
- Direct Replacement: Cast Air OEM part for Castair gas-engine compressors using airline throttle control in this HP range
- Pressure-Switch Driven: Integrates with the compressor''s standard pressure switch signal line — no additional controls needed
Technical Specifications
- Part Number: TCSP-H-5565-B
- Type: Airline (pneumatic) throttle control
- Engine Compatibility: Honda gas engines, 5–6.5 HP
- Actuation: Compressed air from pressure switch signal
- Manufacturer: Cast Air (Castair)
- Price: 3.13
Note: For larger Honda engines (8–13 HP), use TCSP-H-0813-B. For 8–20 HP cable-type applications, see TCLI-48 or TCLP-48. HP range and engine fitment must match your compressor.
When You Need This
- 5–6.5 HP Honda-powered Cast Air compressor runs at full throttle continuously despite full tank — actuator is not receiving the pressure signal
- Engine does not increase speed when air demand drops tank pressure below cut-in — diaphragm has failed
- Compressor is being rebuilt and the airline throttle assembly is damaged or missing
- Air leaks at the throttle control fitting during normal operation
Why Buy From OEM Diagnostic Tools?
We carry the full Cast Air throttle control range and can help confirm this is the right part for your engine and compressor configuration. Free shipping, tech support at 866-217-0063, full Cast Air manufacturer warranty.
Call 866-217-0063 for quick answers and help!
