Multiquip 21667 Spider Assembly 4 Blade R.S. Tapered HTX

The Multiquip 21667 Spider Assembly 4 Blade R.S. Tapered HTX is a genuine OEM component designed for HTX44 series hydrostatic ride-on power trowels, including models HTX44K4, HTX44K5, HTX44Y4, HTX44Y5. Sourced directly from Multiquip, part 21667 delivers the exact geometry and taper specification required for proper blade engagement on these heavy-duty finishing machines. This is a direct OEM replacement that installs to factory configuration, ensuring the rotor assembly functions as intended from the moment it goes on. If your HTX44 is showing uneven blade rotation, blade chatter, or worn spider components, this is the part to restore correct operation.

Key Features

• OEM Taper Geometry: — Manufactured to the exact tapered profile specified for the HTX44 rotor system, ensuring blades seat and pivot correctly across the full pitch range.
• 4-Blade Configuration: — Designed specifically for 4-blade rotor setups on HTX44 series trowels, with the correct spider arm spacing for balanced blade loading.
• Confirmed HTX44 Fitment: — Verified for HTX44K4, HTX44K5, HTX44Y4, and HTX44Y5 hydrostatic ride-on trowels — no guesswork on compatibility.
• Consistent Blade Pitch Control: — A correctly functioning spider assembly maintains uniform blade angle across all four blades, delivering a flat, consistent finish on slab work.
• Genuine Multiquip OEM Part: — Supplied as a genuine OEM component under part number 21667, meeting the same material and dimensional standards as the original production part.

The spider assembly is the central hub of a walk-behind or ride-on trowel's rotor head, connecting the pitch-control mechanism to the individual trowel blades. On HTX44 series machines, the spider transfers blade angle adjustments from the gearbox and pitch control linkage evenly across all four blades, allowing the operator to dial in finishing pressure throughout the concrete curing cycle. When the spider wears, cracks, or loses its taper fit, blade pitch becomes inconsistent — leading to uneven surface finish, blade flutter, and excessive wear on surrounding rotor components. Replacing a worn spider assembly promptly protects the rotor head and maintains the quality of the finished slab.

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.