The Multiquip 43140-69 Radiator Cap is a genuine OEM Radiator Cap designed for STXDF series ride-on power trowels. As a direct OEM replacement sourced through Multiquip's authorized parts network, it meets the exact pressure and sealing specifications required by the factory cooling system. If you're servicing an STXDF dual-fuel ride-on trowel, this is the correct cap to restore proper coolant system operation.
Key Features
- OEM Pressure Rating: — Manufactured to the exact pressure specification of the original cap, ensuring the cooling system maintains the correct operating pressure range for the engine.
- Sealing Integrity: — The cap's rubber seal is designed to form a consistent, leak-free connection at the radiator filler neck — no cutting, trimming, or adaptation needed.
- Confirmed Fitment: — Verified for STXDF series super-sized hydrostatic ride-on power trowels; cross-reference part number 43140-69 before ordering to confirm compatibility with your specific unit.
- Cooling System Protection: — A correctly rated cap keeps the coolant under the right pressure, raising its boiling point and preventing overheating during heavy continuous troweling operations.
- Fuel System Safety Relevance: — On dual-fuel STXDF machines running extended cycles, an underperforming cap can cause coolant loss and engine heat spikes; replacing it at the first sign of wear protects the engine from thermal damage.
The radiator cap seals the cooling system and regulates internal pressure by controlling when coolant flows to and from the overflow reservoir. By maintaining the correct pressure, it raises the boiling point of the coolant, preventing steam pockets and overheating under load. When a radiator cap wears out or loses its seal, the system can't hold pressure — coolant boils off prematurely, the engine runs hot, and long-term damage to gaskets and internal engine components becomes a real risk.
Part Details
| Part Number | 43140-69 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Radiator Cap |
Compatibility & Fitment
| Name | Model |
|---|---|
| Whiteman Ride-On Power Trowels | STXDF |
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.
