The Wacker Neuson Hi Alt Jet #85 is a genuine OEM carburetor jet designed for the RD11AEC and RD11A hydrostatic double drum vibratory tandem rollers. Sourced directly from Wacker Neuson, this jet is engineered to the exact fuel metering specification required for high-altitude operation on these machines. Confirm your model number against the RD11AEC and RD11A before ordering to ensure a correct match.
Key Features
- Calibrated High-Altitude Fuel Metering — Orifice sized specifically for high-altitude air density conditions, maintaining the correct air-fuel ratio where a standard jet would run excessively rich.
- Genuine OEM Part — Supplied by Wacker Neuson to the same specification as the jet installed at the factory, with no substitutions to orifice size or material grade.
- Direct Carburetor Fit for RD11A Series Rollers — Engineered to drop into the carburetor on RD11AEC and RD11A tandem rollers without modification to the fuel circuit.
- Protects Engine Performance at Elevation — A correctly sized high-altitude jet prevents the fuel flooding and power loss that a standard sea-level jet causes when operating above the altitude threshold.
- Fuel System Safety — An improperly sized carburetor jet can cause uncontrolled running conditions or hard starting; using the correct OEM-specified jet keeps the fuel system operating within its designed parameters.
A carburetor jet is a precisely drilled orifice that meters the volume of fuel entering the engine's air-fuel mixture. The high-altitude variant, such as this #85 jet, has a smaller orifice than a standard jet to compensate for the thinner air at elevation, preventing an over-rich mixture that robs power and increases emissions. When a jet becomes clogged, worn, or is the wrong size for the operating altitude, the engine will run rough, lose power, or fail to start reliably.
Part Details
| Part Number | 5000114778 |
|---|---|
| Old Part Number | 0114778 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Hi Alt Jet #85 |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Hydrostatic Double Drum Vibrat ory Roller | RD11AEC | 5000007695 |
| Hydrostatic Double Drum Vibrat ory Roller | RD11A | 5000007693 |
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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