The Multiquip EM203 Supporter Bolt is a genuine OEM fastener used across a wide range of Multiquip, Whiteman, and Essick equipment — including MD105 hydraulic ride-on trowels, HTX44K4 and HTX44K5 power trowels, WBH-16 series power buggies, EM120 and PRO12 series concrete mixers, MVH408DZ plate compactors, and many more. As a direct OEM replacement, this bolt matches the original material grade, thread specification, and dimensional tolerances set by Multiquip for the supported position on each machine. Sourced directly through authorized distribution, the EM203 is the correct part to specify when replacing a worn, damaged, or missing supporter bolt on any compatible model.
Key Features
- Genuine OEM Material Grade — Manufactured to the same tensile and shear specifications as the original, ensuring the bolt performs correctly under the structural loads of a supporter mounting point.
- Broad Cross-Model Fitment — Compatible with ride-on trowels, walk-behind trowels, power buggies, concrete mixers, plate compactors, and more across the Multiquip, Whiteman, and Essick product families.
- Direct Drop-In Replacement — Matches OEM thread pitch, head type, and length for straightforward installation into the original mounting position without reworking the mating hardware.
- Structural Integrity at the Support Point — A correctly specified supporter bolt keeps attached brackets, guards, or structural supports firmly located; an incorrect or worn bolt can allow movement that leads to accelerated wear on adjacent components.
- OEM Part Number Confidence — Ordering by part number EM203 ensures you receive the exact bolt specified by Multiquip engineering for each listed model, not a generic substitute.
A supporter bolt is a structural fastener that secures a bracket, support arm, or mounting plate to the main frame or housing of the machine. Its role is to maintain the correct position and clamping load at that joint throughout operation — particularly important on vibrating or mobile equipment where fastener fatigue can develop over time. When a supporter bolt is missing, stretched, or damaged, the supported component can shift or loosen, potentially causing wear to surrounding parts or creating an unsafe operating condition.
Part Details
| Part Number | EM203 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Supporter Bolt |
Compatibility & Fitment
| Name | Model |
|---|---|
| Balloon Systems | GB43LED |
| Balloon Systems | GB43LED CSA |
| Balloon Systems | GB43SC |
| Essick Mixers | EM120 |
| Essick Mixers | EM120P Series |
| Essick Mixers | EM120S Series |
| Essick Mixers | EM120SM |
| Essick Mixers | PRO12 |
| Essick Mixers | PRO12E51 |
| Essick Mixers | PRO12E53 |
| Hydraulic Ride-On Power Trowels | MD105 |
| International Ride-On Power Trowels | EHHNK5 |
| International Ride-On Power Trowels | HTNS5S-2 |
| International Ride-On Power Trowels | JTNS20 |
| International Ride-On Power Trowels | JTNSW20 |
| International Ride-On Power Trowels | JTNSW20HTCSL |
| International Ride-On Power Trowels | JTNSW24HTCSL |
| International Walk-Behind Power Trowels | BS46H11 |
| International Walk-Behind Power Trowels | BS46H90 |
| Whiteman Walk-Behind Power Trowels | CA-4-4H |
| International Walk-Behind Power Trowels | CS24H55E |
| International Walk-Behind Power Trowels | JS36H55 |
| International Walk-Behind Power Trowels | JS36H90 |
| Mayco Pumps | C30HDGA |
| Plate Compactors | MVH408DZ |
| Power Buggies | WBH-16 |
| Power Buggies | WBH-16E |
| Power Buggies | WBH-16EAWD |
| Power Buggies | WBH-16EAWDF |
| Power Buggies | WBH-16EF |
| Power Buggies | WBH-16F |
| Power Buggies | WBH-21EF |
| Power Buggies | WBH21EPA |
| Rollers | AR14H |
| Vibrators | G55H |
| Whiteman Mixers | WM120PH |
| Whiteman Mixers | WM120SH |
| Whiteman Ride-On Power Trowels | HHN31V |
| Whiteman Ride-On Power Trowels | HHN34TVD |
| Whiteman Ride-On Power Trowels | HHNG5 |
| Whiteman Ride-On Power Trowels | HHXD5 |
| Whiteman Ride-On Power Trowels | HHXD5-ES |
| Whiteman Ride-On Power Trowels | HHXDF4-DF5 |
| Whiteman Ride-On Power Trowels | HHXG5 |
| Whiteman Ride-On Power Trowels | HTN-KHOLER/ONAN/HONDA |
| Whiteman Ride-On Power Trowels | HTN27K |
| Whiteman Ride-On Power Trowels | HTN28K |
| Whiteman Ride-On Power Trowels | HTX44K4 |
| Whiteman Ride-On Power Trowels | HTX44K5 |
| Whiteman Walk-Behind Power Trowels | J36-M30 |
| Whiteman Ride-On Power Trowels | JTO-SERIES |
| Whiteman Ride-On Power Trowels | JWN24HTCSL/HSCSL |
| Whiteman Walk-Behind Power Trowels | B46 |
| Whiteman Walk-Behind Power Trowels | B46S90 |
| Whiteman Walk-Behind Power Trowels | BH11C |
| Whiteman Walk-Behind Power Trowels | BH90C |
| International Walk-Behind Power Trowels | BS90C |
| Whiteman Walk-Behind Power Trowels | CA4HC/CA5BC |
| Whiteman Walk-Behind Power Trowels | CA4HM |
| Whiteman Walk-Behind Power Trowels | HDA-SERIES |
| Whiteman Walk-Behind Power Trowels | J3036H55 |
| Whiteman Walk-Behind Power Trowels | J36-M30 Series |
| Whiteman Walk-Behind Power Trowels | JH55C |
| Whiteman Walk-Behind Power Trowels | JH90C |
| International Walk-Behind Power Trowels | JS60C |
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.
