The Multiquip 2415321S Oil Cooler O-Ring is a genuine OEM replacement seal designed for HTN27K and HTN28K Whiteman ride-on power trowels. Sourced directly from Multiquip, this O-ring delivers the exact material grade, durometer, and dimensional profile required by the original equipment design. It is a direct-fit component for the Str46Sp oil cooler circuit on compatible HTN-series machines, requiring no modification during installation. When your HTN27K or HTN28K is showing signs of oil leakage at the cooler connection, part number 2415321S is the correct OEM solution.
Key Features
- OEM-Matched Seal Compound — Manufactured to the original material and compression specification, ensuring the sealing surface holds under the operating pressures of the HTN-series hydraulic and cooling circuit.
- Exact Dimensional Profile — Matches the original groove geometry of the Str46Sp oil cooler port for a flush, leak-free seat without trimming or shimming.
- Confirmed HTN-Series Fitment — Verified for HTN27K and HTN28K Whiteman ride-on power trowels; check your model plate before ordering.
- Leak Prevention at the Source — A failed or hardened O-ring at the oil cooler connection allows oil to bypass the cooling circuit, leading to elevated operating temperatures and accelerated component wear.
- Fluid System Integrity — Using the correct OEM O-ring at oil cooler connections is critical to maintaining proper fluid containment and preventing contamination of surrounding drivetrain components.
The oil cooler O-ring creates a pressure-tight seal at the junction between the oil cooler and its connecting lines or housing ports. Its job is to prevent hydraulic or engine oil from escaping the cooling circuit while keeping contaminants out. When this O-ring hardens, cracks, or deforms with age and heat cycles, oil seeps past the seal — reducing lubrication efficiency, raising fluid temperatures, and potentially causing damage to the trowel's drivetrain or hydraulic system. Replacing a worn O-ring promptly with the correct OEM part restores full sealing performance and protects the components downstream.
Part Details
| Part Number | 2415321S |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Oil Cooler O-Ring |
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.
