The Multiquip 302170C Engine Key 3/8 x 1/4 is a genuine OEM component designed for HTN27K and HTN28K Whiteman ride-on power trowels. This small but critical fastening component is sourced directly from Multiquip, ensuring an exact dimensional match to the original specification. Confirmed fitment covers the HTN27K and HTN28K mechanical ride-on trowel models. If you're servicing or rebuilding the engine drive assembly on these machines, the 302170C is the correct replacement key.
Key Features
- Genuine OEM Dimensional Accuracy — Manufactured to the exact 3/8 x 1/4 profile required by the engine drive assembly, ensuring correct seating and load transfer without slop or misalignment.
- Direct Drop-In Replacement — Matches the original keyway slot geometry on HTN27K and HTN28K trowels, sliding into position without any machining or fitting work.
- Confirmed Fitment — Verified for HTN27K and HTN28K Whiteman mechanical ride-on power trowels; use part number 302170C to confirm compatibility before ordering.
- Protects Shaft and Hub from Rotational Slip — A correctly installed engine key locks the rotating component firmly to the shaft; a worn or sheared key allows slippage that rapidly damages both the shaft and the hub bore.
- Critical Safety-Relevant Component — On a ride-on trowel, a failed drive key can cause sudden loss of blade control; replacing a worn key promptly keeps the operator in full command of the machine.
An engine key is a small rectangular or square metal piece that sits in a machined slot — called a keyway — between a shaft and a rotating component such as a pulley, flywheel, or sprocket. Its job is to prevent the two parts from spinning independently of each other, transmitting torque cleanly from the engine shaft to the driven component. When an engine key shears or wears down, the driven component can slip or spin freely on the shaft, causing a loss of power transfer and accelerating wear on the surrounding metal surfaces. On a ride-on trowel, where consistent blade speed is essential for a quality concrete finish, a compromised engine key will show up quickly as erratic performance or a complete loss of drive.
Part Details
| Part Number | 302170C |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Engine Key 3/8 x 1/4 |
Compatibility & Fitment
| Name | Model |
|---|---|
| Whiteman Ride-On Power Trowels | HTN27K |
| Whiteman Ride-On Power Trowels | HTN28K |
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.
