The Multiquip 42799 Fuel Cap is a genuine OEM replacement designed for LS300, C30HDZ, HTX6H, and LS300P equipment. As an authorized Multiquip parts source, DHS Equipment supplies this cap direct from the manufacturer, so you get the exact component specified for your machine. This fuel cap is confirmed compatible across Mayco concrete pump and Whiteman ride-on power trowel applications where the 42799 is the designated OEM part.
Key Features
- OEM Sealing Integrity — Manufactured to the exact thread pitch and material spec of the original, ensuring a fuel-tight seal that prevents contamination and evaporative loss.
- Direct Drop-In Fit — Threads directly onto the original fuel tank filler neck with no rework or adapters needed, matching the torque and retention characteristics of the factory part.
- Broad Fitment Coverage — Verified for LS300, C30HDZ, HTX6H, and LS300P, spanning Mayco concrete pump and Whiteman ride-on trowel product lines.
- Fuel System Protection — A properly sealing fuel cap keeps debris, water, and contaminants out of the tank, protecting injectors, carburetors, and fuel lines from premature wear.
- Safety-Relevant Component — A failed or missing fuel cap creates a spill and ignition risk on active job sites; replacing it promptly with the correct OEM part restores safe fuel system containment.
The fuel cap seals the fuel tank filler opening and prevents fuel from spilling, evaporating, or becoming contaminated during operation, transport, and storage. On equipment like concrete pumps and ride-on power trowels that operate in demanding site conditions, a secure cap also keeps dirt, water, and debris out of the fuel supply — protecting downstream fuel system components. When a fuel cap cracks, strips, or goes missing, the resulting contamination or spillage can cause hard-starting, injector damage, and a fire hazard that takes the machine out of service entirely.
Part Details
| Part Number | 42799 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Fuel Cap |
Compatibility & Fitment
| Name | Model |
|---|---|
| Mayco Pumps | LS300 |
| Mayco Pumps | C30HDZ |
| Whiteman Ride-On Power Trowels | HTX6H |
| Mayco Pumps | LS300P |
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.
