Multiquip 43592012400011 Impeller Washer Dia. 35 x 9 mm T4.5

The Multiquip 43592012400011 is a genuine OEM Impeller Washer Dia. 35 x 9 mm T4.5 designed for Multiquip QP-series trash and centrifugal pump models. Sourced directly from Multiquip, this washer delivers the exact dimensional tolerances required to maintain proper impeller positioning and axial load management within your pump. Confirmed fitment includes the QP2TH, QP2TB, QP2TZ, QP205SLT, QP305SLT, QPT205SLT, and QPT305SLT models. Keeping an OEM-spec washer in place ensures your pump operates at its rated performance without premature wear to surrounding components.

Key Features

• OEM-Specified Dimensional Accuracy — Manufactured to the exact 35 x 9 mm diameter and 4.5 mm thickness spec, ensuring correct impeller stack height and bearing load distribution.
• Direct Drop-In Installation — Matches the original mounting interface on the pump shaft, seating correctly against the impeller hub without modification to fasteners or housing.
• Broad QP-Series Compatibility — Fits QP2TH, QP2TB, QP2TZ, QP205SLT, QP305SLT, QPT205SLT, and QPT305SLT pump models in a single part number.
• Protects Impeller and Shaft Integrity — A correctly sized washer distributes clamping load evenly across the impeller face; an undersized or worn washer can allow the impeller to shift, causing cavitation, vibration, and accelerated shaft wear.
• Genuine Multiquip OEM Part — Supplied as an authorized OEM component, matching the material grade and thickness tolerance of the original production part for long service life in demanding pump environments.

The impeller washer sits between the impeller and its retaining fastener on the pump shaft, providing a hardened bearing surface that distributes clamping force evenly and prevents the fastener from pulling through or distorting the impeller hub. It also controls axial positioning of the impeller within the volute casing, which directly affects flow efficiency and suction performance. When this washer wears thin, becomes corroded, or is missing entirely, the impeller can shift off-center, leading to reduced pump output, increased vibration, and potential damage to the shaft seal and volute.

Part Details

Compatibility & Fitment

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.