The Multiquip V1674083 Pressure Expansion Tank Cap is a genuine OEM component designed for the DCA400SSV diesel generator. As a direct OEM part, it is manufactured to the exact specifications required by the cooling system on DCA400SSV equipment, ensuring a correct seal and proper pressure retention every time. Sourced directly through authorized Multiquip supply channels, this cap is the same part installed at the factory and is the recommended replacement when the original shows wear, damage, or seal degradation.
Key Features
- OEM-Spec Pressure Rating — Engineered to maintain the precise pressure threshold required by the DCA400SSV cooling system, preventing over- or under-pressurization that can lead to coolant loss or overheating.
- Direct Drop-In Replacement — Designed to seat and thread directly onto the expansion tank fitting of the DCA400SSV with no additional hardware or modification to the tank neck required.
- Confirmed DCA400SSV Fitment — Verified OEM fitment for the Multiquip DCA400SSV ultra-silent diesel generator series.
- Cooling System Integrity — A correctly functioning expansion tank cap regulates coolant pressure across operating temperature ranges, protecting hoses, the radiator, and the engine block from thermal stress damage.
- Genuine OEM Part — Supplied as an authentic Multiquip replacement component under part number V1674083, ensuring material grade and dimensional accuracy consistent with the original equipment specification.
The pressure expansion tank cap seals the coolant expansion tank and regulates the pressure within the engine cooling system. It uses a calibrated pressure valve to allow coolant to flow between the tank and the radiator as the engine heats and cools, preventing dangerous pressure buildup or vacuum collapse. When this cap fails — through a weakened spring, cracked seal, or damaged seating surface — the cooling system loses its ability to hold pressure correctly, which can result in coolant boilover, air ingestion into the system, and accelerated engine wear on the DCA400SSV generator.
For questions about fitment or to confirm this is the correct part for your machine, contact the DHS Equipment team for assistance.
Part Details
| Part Number | V1674083 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Pressure Expansion Tank Cap |
Compatibility & Fitment
| Name | Model |
|---|---|
| Diesel Powered Generators | DCA400SSV |
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.
