The Wacker Neuson 5100039330 Crankshaft Complete is a genuine OEM component designed for PT4A and PT4A(I) series self-priming centrifugal trash pumps. As a factory-sourced assembly, this crankshaft is manufactured to the same specifications as the original, ensuring a direct replacement that installs exactly as the factory unit did. Verified fitment covers PT4A and PT4A(I) pump models, giving you confidence that this is the correct part before it ever arrives on site. When the engine needs a crankshaft-level rebuild, sourcing a genuine OEM assembly like the 5100039330 is the straightforward path to restored performance.
Key Features
- Genuine OEM Crankshaft Integrity — Manufactured to original dimensional tolerances, ensuring correct journal sizing, stroke geometry, and bearing surface finish for this engine family.
- Complete Assembly — Supplied as a Crankshaft Complete, so all integrated components are matched and balanced from the factory — no separate sourcing of sub-components required.
- Confirmed PT4A and PT4A(I) Fitment — Directly compatible with PT4A and PT4A(I) trash pump models, verified against Wacker Neuson OEM part records.
- Restored Engine Output — A properly functioning crankshaft maintains correct piston stroke and power transfer; a worn or damaged crankshaft causes vibration, loss of compression, and eventual engine failure.
- Fuel System Safety Compliance — As a core rotating assembly within the engine, correct crankshaft fitment is critical to maintaining proper seal alignment and preventing fuel or oil ingress into unintended areas of the engine.
The crankshaft is the central rotating component of a reciprocating engine, converting the up-and-down motion of the piston into the rotational force that drives the pump impeller. It must maintain precise dimensional tolerances to preserve compression, bearing clearance, and smooth power delivery — even minor wear or damage to the journals causes vibration, accelerated bearing failure, and a drop in pump output. Replacing a worn crankshaft with a complete, factory-matched assembly restores the engine to its intended operating condition and protects the surrounding components from secondary damage.
Part Details
| Part Number | 5100039330 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Crankshaft Complete |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| PT4A(I) | PT4A(I) | 5100042615 |
| PT4A | PT4A | 5100042604, 5100042217 |
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.
