Multiquip 21666 Spider Assembly 4 Blade L.S. Tapered HTX

The Multiquip 21666 Spider Assembly 4 Blade L.S. Tapered HTX is a genuine OEM component designed for the HTX44 series hydrostatic ride-on power trowels, including the HTX44K4, HTX44K5, HTX44Y4, and HTX44Y5. As a direct OEM replacement sourced through Multiquip's authorized parts network, this spider assembly is manufactured to the same specifications as the original unit installed at the factory. Confirm your model code before ordering to ensure correct fitment for your HTX44 configuration.

Key Features

• Genuine OEM Construction — Manufactured to Multiquip's original design tolerances, ensuring the blade pitch geometry and taper interface match the HTX44 platform exactly as engineered.
• Direct-Mount Replacement — Engineered to bolt into the existing spider position on HTX44 series trowels without secondary machining or adapters.
• HTX44 Series Fitment — Confirmed compatibility with HTX44K4, HTX44K5, HTX44Y4, and HTX44Y5 hydrostatic ride-on power trowels.
• Blade Pitch Control — Maintains consistent blade angle adjustment across all four blades, which is critical to achieving a uniform, quality finish on large concrete slabs.
• Tapered L.S. Interface — The tapered low-speed design provides stable blade arm seating under the high rotational loads typical of heavy-duty finishing passes.

The spider assembly is the central hub mechanism that connects the four trowel blade arms and controls their pitch angle during operation. As the operator adjusts blade pitch, the spider translates that input evenly across all four blades, allowing the trowel to transition smoothly between floating and finishing passes. When a spider assembly wears, cracks, or develops play in the tapered seat, blade pitch becomes inconsistent across the rotor, leading to uneven surface finish, increased vibration, and accelerated wear on surrounding blade arm components.

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.