Multiquip 90131ZE1000 Drain Plug Bolt

The Multiquip 90131ZE1000 is a genuine OEM Drain Plug Bolt designed for a wide range of Multiquip, Whiteman, Essick, and STOW equipment powered by Honda engines. This bolt seals the oil drain port on the engine crankcase, making it a critical service part for routine oil changes across rammers such as the MTX50HD, MTX60HD, MTX70, MTX70HD, MTX70HDR, MTX80HDR, and MT-65H, as well as plate compactors including MVC82VHW, MVH120VGH, MVH-150GH, and MVB85H. It also fits a broad lineup of concrete mixers, mortar mixers, masonry saws, power trowels, centrifugal and trash pumps, and diaphragm pumps across the Multiquip portfolio. As a genuine OEM component, part number 90131ZE1000 is manufactured to the same specification as the original hardware — ensuring a correct thread engagement and a leak-free seal every time.

Key Features

• Genuine OEM Hardware Grade — Manufactured to original thread pitch, head dimensions, and material specification, preventing the cross-threading and oil leaks that undersized or generic drain bolts can cause.
• Correct Thread Engagement — Threads directly into the Honda engine crankcase drain port with no reworking of the boss or use of thread adapters.
• Broad Cross-Equipment Compatibility — Fits MTX-series rammers, MVC/MVH plate compactors, MC/WC/EC/CMS concrete mixers, WM/EM mortar mixers, QP/CP/MQ pumps, masonry saws, and walk-behind trowels across the Multiquip equipment family.
• Leak-Free Oil Retention — A properly seated drain plug bolt maintains crankcase oil pressure and prevents contamination ingress — a worn or cross-threaded bolt risks oil loss, engine seizure, and unplanned downtime.
• Essential Service Interval Part — Should be inspected at every oil change; replacing a worn plug bolt on schedule protects the drain boss threads in the crankcase, which are significantly more expensive to repair.

The drain plug bolt seals the engine oil drain port at the base of the crankcase, keeping engine oil contained between service intervals. During an oil change, this bolt is removed to drain used oil and reinstalled to seal the port before refilling. When the bolt is damaged, overtorqued, or stripped, the crankcase cannot hold a proper seal — leading to oil leaks that can quickly result in oil starvation and engine damage if left unaddressed. Using the correct OEM-specified bolt ensures proper thread engagement and seating with the drain boss, protecting the crankcase threads for the life of the engine.

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.