A genuine Thetford OEM float arm assembly designed for C400 cassette toilet waste-holding tanks. This float arm contains the magnetic float that rises with the waste level, triggering the reed switch to activate the red “tank full” indicator light. If your toilet no longer shows when the tank is full, or the light stays on all the time. This replacement float arm restores proper function.

Part Number: 32304

Component Type: Magnetic float arm

Function: Detects tank waste level and activates reed switch

Material: Durable plastic arm with sealed internal magnet

Kit Includes: 1 × Float arm assembly with magnetic float

Compatability:

• Designed for Thetford C400 series cassette toilets (includes C402, C403, C404 models)

• Fits both manual and electric flush versions of the C400 range

• Works with the corresponding reed switch sensor (mounted on the toilet body)

Frequently Asked Questions

Q: What does the float arm do?
As the waste tank fills, the float arm rises. When it reaches a specific height, a built-in magnet triggers the reed switch on the toilet body, turning on the red “full tank” light on your toilet control panel.

Q: Is this inside the waste tank or on the toilet itself?
The float arm is located inside the waste-holding tank, not on the toilet body.

Q: Does this come with the reed switch?
No ,  this is the float arm only.

Q: Will this fit other Thetford models like the C250 or C200?
No,  this part is specific to C400 series tanks.