Multiquip 0802010900 Reserve Tank Cap

The Multiquip 0802010900 Reserve Tank Cap is a genuine OEM component designed for the DCA ultra-silent generator series, including DCA125, DCA150, DCA180, DCA220, DCA250, DCA300, and DCA400 models. As a direct OEM replacement, it is manufactured to the same specification as the original part, ensuring a correct seal and secure fit on the coolant reserve tank. This cap is confirmed to fit a wide range of DCA ultra-silent and super-silent diesel generator configurations, making it a straightforward service replacement for fleet operators and rental companies alike. Keep part number 0802010900 on hand to minimize unplanned service delays on your Multiquip generator.

Key Features

• Genuine OEM Sealing Integrity — Manufactured to the original pressure and material specification for the reserve tank, ensuring the coolant system holds correct pressure without leaks or evaporation loss.
• Direct Drop-In Replacement — Matches the original thread pattern and cap diameter for the DCA series reserve tank, allowing straightforward removal and installation during routine service.
• Broad DCA Series Compatibility — Confirmed fitment across DCA125, DCA150, DCA180, DCA220, DCA250, DCA300, and DCA400 ultra-silent and super-silent generator models.
• Protects Coolant System Performance — A properly sealing reserve tank cap maintains the correct coolant volume and system pressure, supporting stable operating temperatures under continuous load.
• Cooling System Safety — A failed or missing reserve tank cap can result in coolant loss, overheating, and potential engine shutdown; replacing it promptly with a correct OEM cap is essential to safe generator operation.

The reserve tank cap seals the coolant overflow and recovery reservoir on liquid-cooled diesel generators. It maintains the correct pressure differential within the cooling circuit, allowing coolant to flow between the radiator and the reserve tank as the engine heats and cools. When this cap fails — through a cracked seal, weakened pressure valve, or damaged threads — coolant can escape the system, causing the engine to run hotter than intended. Left unaddressed, a faulty cap can lead to overheating, coolant contamination, and unplanned generator downtime on the jobsite.

Part Details

Compatibility & Fitment

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.