Multiquip EE53599 Water Tube QST30 Rocor AC Lower

The Multiquip EE53599 Water Tube QST30 Rocor AC Lower is a genuine OEM component designed for QST30 series equipment. Sourced directly from Multiquip, this part meets the exact specifications required to maintain proper coolant flow through the air conditioning and cooling circuit on QST30 machines. Confirm your model code against EE53599 before ordering to ensure a direct, correct-fit replacement.

Key Features

• Genuine OEM Coolant Circuit Integrity — Manufactured to Multiquip's exact dimensional and material standards for the QST30 Rocor AC lower cooling circuit, ensuring the tube seats and seals correctly in the system.
• Direct-Fit Replacement — Engineered to connect to the existing fittings and routing of the QST30 cooling circuit without rework or adaptation to surrounding hoses and clamps.
• QST30 Specific Fitment — Confirmed for QST30 series equipment; always cross-reference your model code and EE53599 to validate compatibility before installation.
• Sustained Cooling System Performance — A correctly functioning lower water tube maintains consistent coolant delivery to the AC and cooling circuit; a cracked or degraded tube can cause coolant loss, overheating, and AC system failure.
• OEM Material Grade — Produced from materials specified for the temperature and pressure demands of the QST30 cooling and air conditioning circuit, resisting degradation over extended service intervals.

The lower water tube is a critical link in the QST30's coolant routing system, directing coolant flow through the Rocor air conditioning and cooling circuit at the lower connection point. It works in conjunction with upper tubes, hoses, and clamps to maintain a sealed, pressurized path that regulates operating temperature and supports AC system function. When this tube cracks, collapses, or fails at its fittings, coolant escapes the circuit, leading to elevated operating temperatures and loss of air conditioning performance until the component is replaced.

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.