The Wacker Neuson Main Jet is a genuine OEM carburetor main jet designed for WP1540A, WP1540Aw, WP1550A, and WP1550Aw single-direction vibratory plate compactors. As a direct OEM replacement, this part is manufactured to the exact fuel metering specification required by these machines, ensuring the correct air-fuel mixture is delivered under load. Verified fitment covers multiple machine numbers across the WP1540A and WP1550A series, including Sunbelt rental-specification WP1550Aw units.
Key Features
- Exact Fuel Metering Calibration — Manufactured to OEM orifice specification so the carburetor delivers the correct fuel ratio across the full throttle range of the WP-series engine.
- Genuine Wacker Neuson OEM Part — Sourced directly from Wacker Neuson, carrying part number 5100048121 for verified, confident ordering.
- Broad WP-Series Compatibility — Confirmed fitment across WP1540A, WP1540Aw, WP1550A, and WP1550Aw plate compactors, including standard and Sunbelt rental configurations.
- Restores Full Engine Power — A worn or blocked main jet causes lean running, rough idle, and loss of compaction force; replacing it brings engine output and plate performance back to spec.
- Direct Carburetor Drop-In — Threads directly into the carburetor body using the original jet seat, requiring no adaptation or machining for installation.
The main jet is a small but critical brass metering component inside the carburetor that controls the volume of fuel entering the engine during mid-to-full throttle operation. It works alongside the needle jet and air passages to maintain the correct air-fuel ratio, which directly determines how much power and torque the engine produces under compaction load. When the main jet becomes clogged with varnish or debris — a common result of stale fuel — the engine runs lean, loses power, surges, or refuses to stay at operating speed, reducing the effectiveness of the vibratory plate on the job.
Part Details
| Part Number | 5100048121 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Main Jet |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| WP1540Aw | WP1540Aw US | 5100018327 |
| WP1550Aw | WP1550Aw US | 5100018324 |
| WP1540A | WP1540A US | 5100018328 |
| WP1550A | WP1550A US | 5100018325 |
| WP1550A | WP1550A | 5100062423 |
| WP1550Aw | WP1550Aw | 5100062424, 5100066158 |
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.
