The Wacker Neuson Piston Ring is a genuine OEM Piston Ring designed for the CRT48-25K-L, CRT48-25K-H, and CRT36-25K-H ride-on concrete trowel series. As a direct OEM replacement sourced through the Wacker Neuson parts network, this ring is manufactured to the same specifications as the original component installed at the factory. Whether you are servicing a 48-inch or 36-inch ride-on trowel, the ensures a correct, verified fit with no guesswork on compatibility.
Key Features
- Genuine OEM Sealing Integrity — Manufactured to the original compression and oil-control tolerances required by the CRT engine, ensuring proper cylinder sealing from the first start after installation.
- Drop-In Engine Replacement — Designed to seat directly into the original piston grooves without modification, maintaining correct ring gap and alignment during reassembly.
- Broad CRT Series Coverage — Compatible with the CRT48-25K-L (48 in. Low Speed), CRT48-25K-H (48 in. High Speed), and CRT36-25K-H (36 in. High Speed) ride-on concrete trowels.
- Sustained Power Output — A properly sealed piston ring maintains cylinder compression, which directly supports consistent engine power and smooth trowel operation across an entire finishing pass.
- Fuel and Oil Efficiency — Worn or broken piston rings allow combustion gases to bypass the piston, increasing oil consumption and reducing engine efficiency; replacing with a correct OEM ring restores proper cylinder dynamics.
A piston ring forms a dynamic seal between the piston and the cylinder wall inside the engine, performing two critical jobs: containing combustion pressure above the piston to generate power, and preventing engine oil from entering the combustion chamber from below. When a piston ring wears, cracks, or loses tension, combustion gases escape past the piston — a condition known as blow-by — which robs the engine of power, increases oil consumption, and can cause excessive smoke from the exhaust. On a ride-on concrete trowel like the CRT series, where consistent engine output directly controls rotor speed and finishing quality, a failed piston ring can compromise the entire concrete finishing operation. Replacing a worn ring promptly with the correct OEM part restores full compression and protects the engine from further wear.
Part Details
| Part Number | 5000154803 |
|---|---|
| Old Part Number | 0154803 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Piston Ring |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| 1220mm/48in Low Speed Ride-On Trowel | CRT48-25K-L | 5000009084 |
| 1220mm/48in High Speed Ride-On Trowel | CRT48-25K-H | 5000009085 |
| 915mm/36in Ride-On High Speed Trowel | CRT36-25K-H | 5000620027 |
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.
