The Multiquip 5111290030 Sealing Cup OD=15.6 is a genuine OEM component designed for DCA-series ultra-silent diesel generators including the DCA40SSAI, DCA45SSIU2, DCA60SSAI, DCA60SSI2, and DCA40SSI. As a direct OEM replacement, this sealing cup is manufactured to the exact dimensional specification required for proper fluid containment and pressure integrity within the generator system. Confirm your model code against the fitment list — this part covers multiple DCA variants including FEMA and GEER-configured DCA45SSIU2 units — to ensure you are ordering the correct component for your machine.
Key Features
- OEM-Grade Sealing Material — Manufactured to the original compression and dimensional tolerances required for effective fluid sealing in diesel generator applications, maintaining the integrity of the sealing surface over extended service intervals.
- Exact OD Specification — The 15.6mm outer diameter matches the original cup geometry precisely, allowing the part to seat correctly in its bore without modification or shimming.
- Broad DCA Series Fitment — Compatible with DCA40SSAI, DCA40SSI, DCA45SSIU2, DCA45SSIU2-FEMA, DCA45SSIU2-GEER, DCA60SSAI, and DCA60SSI2 ultra-silent generator models.
- Prevents Fluid Loss and Contamination — A correctly seated sealing cup maintains internal pressure and keeps fluids contained; a failed or deteriorated cup can lead to leaks, contamination of adjacent components, and unplanned service interruptions on the generator.
- Genuine Multiquip OEM Part — Sourced directly from Multiquip, part number 5111290030 carries full OEM backing and is the correct replacement specification for the machines listed.
A sealing cup is a precision-formed cup-shaped seal used to retain fluid pressure and prevent leakage at a specific bore or cavity within the machine's hydraulic, fuel, or lubrication circuit. In a diesel generator like the DCA-series ultra-silent units, maintaining tight sealing across all fluid circuits is critical to consistent output performance and long service life. When a sealing cup wears, deforms, or cracks, it can allow fluid to bypass the seal, leading to pressure loss, contamination, or visible leakage that requires immediate attention to prevent further component damage.
Part Details
| Part Number | 5111290030 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Sealing Cup OD=15.6 |
Compatibility & Fitment
| Name | Model |
|---|---|
| Diesel Powered Generators | DCA40SSAI |
| Diesel Powered Generators | DCA45SSIU2 |
| Diesel Powered Generators | DCA60SSAI |
| Diesel Powered Generators | DCA60SSI2 |
| Diesel Powered Generators | DCA40SSI |
| Diesel Powered Generators | DCA45SSIU2-FEMA |
| Diesel Powered Generators | DCA45SSIU2-GEER |
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.
