The Multiquip 3973511 is a genuine OEM Filler Cap HX40W QSL9-G3 designed for HX40W and QSL9-G3 series equipment. As a factory-sourced component, it meets the same standards as the original part it replaces, ensuring a correct, trouble-free installation. DHS Equipment stocks this part for operators who need a dependable, like-for-like replacement without compromise. Confirmed fitment covers HX40W and QSL9-G3 models — always cross-reference your part number before ordering.
Key Features
- Genuine OEM Integrity — Sourced directly from Multiquip, this filler cap matches the original material grade and sealing specification for consistent fluid containment performance.
- Drop-In Compatibility — Engineered to seat and thread exactly as the original, this cap installs without rework or adapter hardware on compatible assemblies.
- Confirmed Fitment — Verified for HX40W and QSL9-G3 series equipment; always confirm against your unit's parts diagram before ordering.
- Contaminant Barrier — A properly functioning filler cap seals the fill point against dust, debris, and moisture ingress — factors that accelerate internal wear when a cap is cracked, missing, or improperly seated.
- Fluid System Safety — A secure, correctly rated cap prevents pressurized fluid from escaping at the fill point, protecting both the operator and surrounding components during operation.
A filler cap seals the fluid fill port on the machine, preventing dirt, water, and airborne debris from entering the fluid reservoir. It also maintains the correct pressure environment within the system, which is critical to consistent fluid circulation and component lubrication. When a filler cap is cracked, missing, or fails to seat properly, contaminants can enter the system and cause accelerated wear or fluid loss — making timely replacement with a correct OEM part essential to keeping the machine operating as intended.
Part Details
| Part Number | 3973511 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Filler Cap HX40W QSL9-G3 |
Compatibility & Fitment
| Name | Model |
|---|---|
| HX40W | HX40W |
| QSL9-G3 | QSL9-G3 |
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.
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