The Multiquip 551327830 is a genuine OEM Lock Nut M90 MRX-440P designed for the MRX-440P walk-behind roller. Sourced directly from Multiquip, this fastener meets the exact material and thread specifications required for proper assembly and secure retention on the MRX-440P. As a genuine OEM component, it is manufactured to the same standards as the original hardware installed at the factory, ensuring correct fit without modification. DHS Equipment supplies this part to keep your MRX-440P roller running as it should.
Key Features
- Heavy-Duty Thread Integrity — M90-specification locking nut engineered to maintain clamping force under the vibration loads typical of walk-behind roller operation.
- Genuine OEM Construction — Manufactured to Multiquip's original material and dimensional specs, so the thread engagement and locking mechanism perform exactly as intended on the MRX-440P.
- Direct-Fit for MRX-440P — Sized and threaded specifically for the MRX-440P roller; installs in the original position with no re-machining or adaptation.
- Secure Retention Under Load — A properly torqued lock nut at this size class prevents critical assembly components from backing off during continuous compaction cycles, protecting adjacent drivetrain or drum components.
- Verified Fitment — Part 551327830 is confirmed for the MRX-440P, giving you confidence you are ordering the correct fastener the first time.
A lock nut is a fastener designed to resist loosening when subjected to vibration, torque, and dynamic loading — conditions that are constant during roller operation. On a walk-behind roller like the MRX-440P, large-format lock nuts such as this M90 size are typically used to secure major rotating or structural assemblies, such as drum shafts or drive components, where fastener loosening could lead to misalignment, accelerated wear, or mechanical failure. Replacing a worn, stripped, or damaged lock nut promptly restores the secure clamping that keeps critical assemblies properly seated and operating safely.
For questions about fitment or to confirm this is the right part for your MRX-440P, contact the DHS Equipment team directly.
Part Details
| Part Number | 551327830 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Lock Nut M90 MRX-440P |
Compatibility & Fitment
| Name | Model |
|---|---|
| MRX-440P | MRX-440P |
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.
