The Multiquip SP4854 Pinion 14T (3/4" Bore) SDP-2 is a genuine OEM component designed for STOW SDP-2 diaphragm pumps. This 14-tooth pinion gear is machined to OEM specifications, ensuring proper mesh engagement and torque transfer within the drive assembly. Sourced directly from Multiquip, the part is the correct replacement for SDP-2 series equipment and installs to factory dimensions without modification to surrounding components.
Key Features
- OEM-Spec Tooth Profile — 14-tooth gear geometry machined to the original design specification, maintaining correct mesh and load distribution within the drive train.
- 3/4" Bore Fitment — Sized to the correct 3/4" bore, allowing direct installation onto the drive shaft of SDP-2 series diaphragm pumps without additional fitting or adaptation.
- Genuine Multiquip OEM Part — Sourced from Multiquip as an authorized OEM replacement, ensuring material grade and dimensional accuracy match the original component.
- Confirmed SDP-2 Compatibility — Verified fitment for STOW SDP-2 diaphragm pump models; cross-reference SP4854 against your unit before ordering.
- Drive System Integrity — A worn or chipped pinion causes erratic pump stroke timing and accelerated wear on mating gears; replacing with the correct OEM part restores smooth, consistent drive operation.
The pinion gear in a diaphragm pump drive assembly transmits rotational power from the motor or engine to the eccentric mechanism that drives the pump's diaphragm back and forth. The gear's tooth count and bore size directly control stroke rate and the torque applied to the diaphragm, so dimensional accuracy is critical to consistent pumping output. When a pinion wears down or loses teeth, the drive becomes erratic, output pressure drops, and damage to surrounding gears and bearings can follow quickly.
Part Details
| Part Number | SP4854 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Pinion 14T (3/4" Bore) SDP-2 |
Compatibility & Fitment
| Name | Model |
|---|---|
| STOW Diaphragm Pumps | SDP-2 |
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.
