The Multiquip 5112190170 Rear Face Sealing Cup D=38 is a genuine OEM sealing component designed for DCA25SSAI, DCA25SSI, DCA25SSI2, DCA25SSIU, and DCA25SSIU-GEER ultra-silent diesel generator models. As a direct OEM replacement, this cup is manufactured to the exact dimensional and material specifications required to maintain a proper seal within the alternator end assembly. Sourced directly through Multiquip's authorized parts network, the part is the correct part for maintaining the integrity of your DCA25 series generator. DHS Equipment stocks genuine Multiquip OEM parts to ensure you receive the right component the first time.
Key Features
- Genuine OEM Sealing Integrity — Manufactured to exact compression and dimensional tolerances for the rear face seal application, ensuring no fluid migration past the sealing surface.
- Correct 38mm Seat Diameter — The D=38 specification matches the precise bore diameter required for proper seating and contact in the alternator rear face assembly — installs directly without reworking the housing.
- Confirmed DCA25 Series Fitment — Verified for DCA25SSAI, DCA25SSI, DCA25SSI2, DCA25SSIU, and DCA25SSIU-GEER ultra-silent generator models.
- Protects Internal Components — A correctly seated rear face sealing cup prevents contamination and seal failure that can lead to lubricant loss or moisture ingress, protecting the alternator's internal rotating assembly.
- Authorized Multiquip OEM Part — Supplied through Multiquip's authorized distribution network, this part carries the quality assurance of a genuine OEM component with a traceable part number.
The rear face sealing cup is a precision-formed cup seal positioned at the rear face of the alternator or rotating assembly housing. Its role is to maintain a compressed, contaminant-resistant barrier between the rotating shaft or end face and the surrounding housing, preventing lubricant from escaping and blocking dust, moisture, or debris from entering the assembly. When this cup seal becomes worn, deformed, or seated incorrectly, it can allow fluid leakage or contamination ingress that accelerates wear on bearings and internal windings — making timely replacement critical to keeping a generator operating at rated output.
For questions about fitment or to confirm compatibility with your specific DCA25 series unit, contact the DHS Equipment parts team for assistance.
Part Details
| Part Number | 5112190170 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Rear Face Sealing Cup D=38 |
Compatibility & Fitment
| Name | Model |
|---|---|
| Diesel Powered Generators | DCA25SSAI |
| Diesel Powered Generators | DCA25SSI |
| Diesel Powered Generators | DCA25SSI2 |
| Diesel Powered Generators | DCA25SSIU-GEER |
| Diesel Powered Generators | DCA25SSIU |
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.
