The Multiquip EM50425 Piston Pin is a genuine OEM component designed for QP2TZ and QP3TZ series trash pumps. Sourced directly from Multiquip, this part meets the same specifications as the original, ensuring a correct drop-in fit with no guesswork on compatibility. It is verified for use on QP2TZ and QP3TZ models, making it a dependable choice when your pump needs internal engine service. Keeping the correct piston pin in place is essential for maintaining engine compression, smooth reciprocating motion, and overall pump performance on the job.
Key Features
- Genuine OEM Dimensional Accuracy — Manufactured to the exact diameter and surface finish tolerances required for correct piston-to-connecting-rod alignment in Hatz-engined trash pump applications.
- Direct-Fit Internal Engine Component — Designed to seat precisely within the piston bore and connecting rod small end, allowing straightforward installation during engine disassembly and rebuild.
- Confirmed Fitment for QP2TZ and QP3TZ — Verified compatibility with Multiquip QP2TZ and QP3TZ trash pumps, so you can order with confidence and avoid cross-fitment errors.
- Supports Full Engine Compression and Stroke — A correctly fitted piston pin maintains the rigid connection between piston and rod, preserving combustion efficiency and consistent pump output volume.
- Critical Safety-Adjacent Engine Component — A worn or undersized piston pin can cause piston slap, rapid bore wear, or catastrophic engine failure — replacing it with a genuine part protects the entire engine assembly.
The piston pin — also called a wrist pin — is a precision-ground cylindrical shaft that links the piston to the small end of the connecting rod inside the engine. It transfers the force of combustion from the piston down through the rod to the crankshaft, converting the explosive energy into the rotational power that drives the pump. When a piston pin wears, becomes loose, or seizes within its bore, the result is audible knocking, loss of compression, and accelerated damage to the piston, rod, and cylinder wall — often leading to full engine failure if left unaddressed.
Part Details
| Part Number | EM50425 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Piston Pin |
Compatibility & Fitment
| Name | Model |
|---|---|
| Trash Pumps | QP2TZ |
| Trash Pumps | QP3TZ |
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.
