The Multiquip 821135 Oil Pressure Switch is a genuine OEM component designed for AR13D ride-on rollers and HHXD5, HHXG5, and HHXD5-ES Whiteman ride-on power trowels. As a direct Multiquip OEM part, it meets the exact electrical and pressure-response specifications required for proper engine protection on these machines. If you are servicing an AR13D, HHXD5, or HHXG5 and need a verified replacement, part number 821135 is the correct factory-sourced solution. DHS Equipment supplies this genuine OEM part directly, so you can order with confidence knowing you are getting the right switch for your equipment.
Key Features
- Genuine OEM Electrical Specification — Factory-sourced switch with the correct pressure threshold and circuit output to trigger accurate low-oil warnings on compatible engines.
- Direct Connector Fit — Installs directly into the existing oil pressure port with the correct thread pitch and connector interface — no adapters or modifications needed.
- Broad Multiquip Fitment — Confirmed for the AR13D ride-on roller and HHXD5, HHXG5, and HHXD5-ES Whiteman ride-on power trowels.
- Engine Protection You Can Count On — A correctly functioning oil pressure switch ensures the engine shuts down or alerts the operator before low oil pressure causes internal engine damage.
- Safety-Critical Component — This switch is part of the engine's oil pressure monitoring circuit; a failed or bypassed switch leaves the engine unprotected from pressure loss during operation.
An oil pressure switch monitors the lubrication system and signals the engine control circuit when oil pressure drops below a safe threshold. On ride-on rollers and power trowels, this triggers a warning or automatic engine shutdown, protecting internal engine components from damage caused by oil starvation. When the switch fails, the machine may run without any low-oil protection, or it may falsely shut down even when pressure is normal — both conditions disrupt operation and can lead to costly engine repairs if left unaddressed.
Part Details
| Part Number | 821135 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Oil Pressure Switch |
Compatibility & Fitment
| Name | Model |
|---|---|
| Rollers | AR13D |
| Whiteman Ride-On Power Trowels | HHXD5 |
| Whiteman Ride-On Power Trowels | HHXG5 |
| Whiteman Ride-On Power Trowels | HHXD5-ES |
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
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
