Description
Snap-on / Hofmann / John Bean ST4031030 White Bead Breaker Air Valve with 3-Bolt Backing Plate
The bead breaker air valve is the foot-operated white air control valve that activates the bead loosener on Hofmann Monty, Snap-on, and John Bean tire changers. This valve includes the 3-bolt backing plate that secures the O-rings in place. Replace when the valve is cracked, leaking air, or when the pedal actuator no longer springs back. Confirm your machine uses this white valve with the 3-bolt backing plate configuration before ordering, as other valve styles were used on related models.
Note: Some models may require swapping the air line fittings from your old valve, as certain machines used larger hoses that require different fitting sizes.
Product Information
- Brand / Equipment: Hofmann / Snap-on / John Bean Tire Changer
- Manufacturer / Reference Part Number: ST4031030
- Store SKU: SNN1030
- Component: Bead Breaker Foot Control Air Valve with 3-Bolt Backing Plate
- Color: White
- Listed Application: Hofmann Monty 3300; John Bean EHP System IV E AT, TEEWH540A3; Snap-on EEWH312A, EEWH326A
Replacement / Cross-Reference Numbers
- ST4031030
- EAA0356G94A
Fitment & Ordering Notes
Confirm your machine uses the white valve with the 3-bolt backing plate before ordering. If your machine has larger air hoses, fitting adapters may be needed. For help identifying the correct valve, call 866-902-6060.
Additional Product Information
Aftermarket replacement – not produced by the original equipment manufacturer. All brand names and part numbers used for reference purposes only.




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