The Multiquip 11980203121 is a genuine OEM Diaphragm Cover 3TNV76 AR16-2 designed for the AR16-2 asphalt ride-on roller. Sourced directly from Multiquip, this cover is an exact match for the original component, ensuring proper fit and function within the fuel system. If you're servicing or rebuilding the carburetor or fuel pump assembly on your AR16-2, part 11980203121 is the correct OEM replacement to specify.
Key Features
- Genuine OEM Construction — Manufactured to the same material and dimensional specifications as the original diaphragm cover, maintaining correct sealing surface geometry for the 3TNV76-powered AR16-2.
- Direct-Fit Replacement — Mounts in place of the original cover without alteration, aligning correctly with the diaphragm and housing on AR16-2 roller fuel assemblies.
- AR16-2 Roller Compatibility — Confirmed fitment for the Multiquip AR16-2 asphalt ride-on roller equipped with the 3TNV76 engine.
- Fuel System Integrity — A properly seated diaphragm cover maintains the pressure differential needed for consistent fuel delivery; a cracked or warped cover leads to fuel starvation and rough running.
- Fuel System Safety — A correctly sealed cover prevents fuel vapors from escaping the assembly, supporting safe operation of the roller on active paving sites.
The diaphragm cover seals and protects the flexible diaphragm inside the fuel pump or carburetor assembly, holding it in position so it can flex consistently and draw fuel through the system. Without a properly sealed cover, the diaphragm cannot maintain the vacuum and pressure cycles required to deliver fuel reliably to the engine. When the cover cracks, warps, or loses its sealing ability, the result is fuel starvation, hard starting, or erratic engine behavior — issues that bring compaction work to a halt.
For fitment questions or help confirming that this part is the right part for your machine, contact the DHS Equipment parts team directly.
Part Details
| Part Number | 11980203121 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Diaphragm Cover 3TNV76 AR16-2 |
Compatibility & Fitment
| Name | Model |
|---|---|
| AR16-2 | AR16-2 |
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.
