The Multiquip 0451290080 is a genuine OEM Spring Washer (Casing Cover) M8 designed for a wide range of Multiquip QP and MQ series trash pumps, centrifugal pumps, and the RW3010 roller. As a factory-original component, this washer meets the exact material and dimensional standards specified for these machines. Confirmed fitment includes models QP2TH, QP2TB, QP2TK, QP2TZ, QP3TB, QP3TH, QP3THX, QP3TK, QP3TS, QP3TZ, QP4TB, QP4TH, QP4TK, QP4TKT, QP4TZ, QP402B, QP303B, MQ62TK, MQ62TDD, QPT405SLT, and RW3010. Sourced directly through authorized Multiquip channels, the 0451290080 ensures a proper, secure casing cover connection every time.
Key Features
- Genuine OEM Spring Tension: — Manufactured to Multiquip's original torque and spring-rate spec, delivering the correct clamping force at the casing cover joint without under- or over-compression.
- Direct Drop-In Fit: — M8 sizing matches the original fastener pattern on the casing cover, allowing straightforward installation without any hardware modification.
- Broad Multiquip Fitment: — Covers QP2, QP3, QP4, MQ62, and QPT405 series pumps across both trash and centrifugal families, as well as the RW3010 roller, making it a practical stock item for mixed fleets.
- Casing Seal Integrity: — A correctly tensioned spring washer keeps the casing cover seated under pump vibration and pressure, preventing joint loosening that can lead to leaks or seal failure mid-operation.
- Corrosion-Resistant Construction: — Built to withstand the wet, abrasive operating environment typical of pump and compaction equipment, maintaining spring tension over repeated service cycles.
A spring washer is a hardened, slightly bowed or split fastener placed beneath a nut or bolt head to maintain consistent clamping load under vibration and thermal cycling. On pump casing covers, this is especially important because the assembly experiences constant mechanical vibration during operation — without the spring washer holding tension, fasteners can back off over time, allowing the casing joint to shift and leak. When this washer is worn flat, cracked, or missing, the casing cover loses its secure seal, which can result in fluid loss, air ingestion, and a drop in pump performance or pressure output.
Verify your model number before ordering. If you need help confirming fitment for your specific Multiquip pump or equipment, contact the DHS Equipment team for support.
Part Details
| Part Number | 0451290080 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Spring Washer (Casing Cover) M8 |
Compatibility & Fitment
| Name | Model |
|---|---|
| Trash Pumps | QP2TH |
| Trash Pumps | QP4TB |
| Trash Pumps | QP402B |
| Trash Pumps | QP303B |
| Trash Pumps | QP3TB |
| Trash Pumps | QP2TB |
| Trash Pumps | QP3TS |
| Trash Pumps | QP3THX |
| Trash Pumps | QP4TK |
| Trash Pumps | QP4TKT |
| Trash Pumps | QP3TK |
| Trash Pumps | QP2TK |
| Trash Pumps | MQ62TK |
| Trash Pumps | MQ62TDD |
| Centrifugal Pumps | QPT405SLT |
| Trash Pumps | QP4TZ |
| Trash Pumps | QP4TH |
| Trash Pumps | QP3TH |
| Trash Pumps | QP2TZ |
| Trash Pumps | QP3TZ |
| Rollers | RW3010 |
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.
