Multiquip 21609 Seat Cushion Ops Switch Sc996Sw Wi

The Multiquip 21609 Seat Cushion Ops Switch Sc996Sw Wi is a genuine OEM component designed for HTX44K4, HTX44K5, STX55J6, and STX55Y6 hydrostatic ride-on power trowels. As a direct OEM replacement, part 21609 is manufactured to the exact specifications of the original, ensuring proper fitment and correct integration with the operator presence switching system. This part is verified compatible with the HTX and STX series ride-on trowels listed above, making it a straightforward service replacement for fleet managers and equipment operators alike. Keep your trowel operating safely and correctly by replacing worn or damaged cushion components with the genuine Multiquip 21609.

Key Features

• Genuine OEM Construction — Manufactured to Multiquip's exact material and dimensional specifications for the seat operator presence switch system, ensuring the cushion activates the safety circuit correctly every time.
• Direct Drop-In Replacement — Engineered to mount in the original seat position on compatible HTX and STX series trowels, with no reworking of the seat frame or switch assembly needed.
• Confirmed Fitment — Verified for HTX44K4, HTX44K5, STX55J6, and STX55Y6 hydrostatic ride-on power trowels.
• Operator Presence System Integrity — A correctly functioning seat cushion ensures the ops switch reads accurate seating pressure, keeping the machine's safety interlock system performing as designed.
• Safety-Critical Component — The operator presence switch relies on consistent cushion compression to detect whether an operator is seated; a worn or collapsed cushion can cause false readings, unintended shutdowns, or failure to shut down when the seat is vacated.

The seat cushion on a ride-on trowel does more than provide comfort — it plays a direct role in the machine's operator presence switching system. The cushion transmits seating pressure to the ops switch beneath it, which signals the machine's control system that an operator is in position. When the cushion compresses unevenly, becomes flattened with age, or deteriorates, the switch may receive inconsistent pressure signals, leading to erratic machine behavior or a compromised safety interlock. Replacing the cushion with a genuine Multiquip 21609 restores the correct compression profile and keeps the operator presence circuit functioning as intended.

Part Details

Compatibility & Fitment

Verify Before You Order

Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.

Why Buy From DHS Equipment

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