The Wacker Neuson Hi Alt Jet #88 is a genuine OEM carburetor jet designed for the RD12A-90 and RD11A series tandem rollers, including the RD11AEC Hydrostatic Double Drum Vibratory Roller. As a direct OEM component, part is manufactured to the exact specification required for high-altitude fuel delivery in these machines. This jet is the correct replacement for RD12A-90 variants including standard, Foldable ROPS, and double-drum configurations, as well as the RD11A and RD11AEC hydrostatic roller platforms. Sourcing the correct high-altitude jet ensures your roller's engine receives the right fuel-to-air ratio when operating at elevation.
Key Features
- OEM Fuel Metering Accuracy — Calibrated to the precise orifice size required for high-altitude carburetor performance on Wacker Neuson roller engines, ensuring correct fuel delivery where air density is reduced.
- Drop-In Carburetor Fit — Threaded to match the OEM carburetor body on RD12A-90 and RD11A series rollers; installs directly into the existing jet port without modification to surrounding components.
- Broad RD Series Compatibility — Confirmed fitment across RD12A-90 standard, RD12A-90 Foldable ROPS, RD12A-90 double-drum, RD11A, and RD11AEC hydrostatic tandem roller models.
- Protects Engine Efficiency at Elevation — A worn or incorrect jet causes a rich or lean fuel condition, leading to rough running, power loss, and accelerated engine wear; the correct high-altitude jet restores proper combustion balance.
- Genuine Wacker Neuson OEM Part — Sourced directly from Wacker Neuson, part 5000114777 meets all original design tolerances for this carburetor application.
A high-altitude jet is a small but critical carburetor component that regulates how much fuel is delivered to the engine at elevations where air is thinner than at sea level. Standard jets meter fuel for sea-level air density; running a standard jet at altitude results in an overly rich mixture, causing hard starting, carbon buildup, and reduced power output. Replacing the jet with the correct high-altitude specification — such as the Wacker Neuson 5000114777 Hi Alt Jet #88 — recalibrates the fuel delivery to match the available oxygen, keeping the engine running cleanly and efficiently in elevated work environments.
Part Details
| Part Number | 5000114777 |
|---|---|
| Old Part Number | 0114777 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Hi Alt Jet #88 |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD12A-90 Tandem Roller | RD12A-90 | 5000620058, 5000620320, 5000620369 |
| 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.