The Wacker Neuson Piston Assembly is a genuine OEM component designed for CRT48-31V series ride-on concrete trowels, including the standard CRT48-31V, CRT48-31V-H High Speed, CRT48-31V-E, CRT48-31V-ES-E, and CRT48-31V-ES Electronic Steering models. As a direct Wacker Neuson OEM part, the is manufactured to the same specification as the original, ensuring a correct fit within the engine assembly. Sourcing a genuine OEM piston assembly means you are restoring your machine to its original operating condition with a part engineered specifically for these trowels. Confirm your model number before ordering to ensure compatibility with your specific CRT48-31V configuration.
Key Features
- Genuine OEM Dimensional Accuracy — Machined to precise bore tolerances required for correct ring seal and compression in CRT48-31V engine applications.
- Drop-In Engine Replacement — Designed to seat directly into the existing cylinder bore with correct wrist pin alignment, streamlining engine reassembly.
- Broad CRT48-31V Coverage — Compatible across the CRT48-31V family, including High Speed (CRT48-31V-H) and Electronic Steering (CRT48-31V-ES) variants.
- Restores Full Power Output — A worn or damaged piston causes compression loss, rough running, and reduced rotor torque; replacing it with a properly spec'd piston returns the trowel to full finishing performance.
- Fuel System Integrity — Correct piston fit maintains the combustion seal that governs fuel efficiency and emissions compliance on these ride-on trowels.
The piston assembly is a core reciprocating component inside the engine, converting combustion pressure into the crankshaft rotation that powers the trowel's finishing rotors. It works in conjunction with the piston rings and cylinder bore to maintain compression; if the piston is worn, scored, or cracked, compression drops sharply, leading to hard starting, loss of power, and increased fuel consumption. Replacing the piston assembly with a correctly matched part restores combustion efficiency and keeps the rotor drive system operating at the output level needed for quality concrete finishing.
Part Details
| Part Number | 5000157797 |
|---|---|
| Old Part Number | 0157797 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Piston Assembly |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| 1220mm/48in Ride-on Trowel | CRT48-31V | 5000620476 |
| 1220mm/48in High Speed Ride-On Trowel | CRT48-31V-H | 5000009086 |
| Ride-on Trowel | CRT48-31V-E | 5000009481 |
| Ride-on Trowel | CRT48-31V-ES-E | 5000009482 |
| 1220mm/48in Ride-on Trowel, El ectronic Steering | CRT48-31V-ES | 5000009216 |
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.
