Kubota Radiator Cap - OEM Number: 17214-72020

The Kubota Radiator Cap (OEM 17214-72020) is a genuine replacement cooling system pressure cap designed for use on a wide range of Kubota tractors, excavators, utility vehicles, mowers, and industrial machinery. Fitted to the radiator filler neck, the cap maintains the correct cooling system pressure, helping to raise the coolant boiling point, improve heat dissipation, and ensure efficient engine temperature control. Kubota identifies 17214-72020 as a genuine radiator cap assembly, superseding the earlier 6C040-58660.

Manufactured to OEM specifications, the radiator cap is engineered to withstand continuous pressure cycling, temperature fluctuations, vibration, and exposure to coolant. Its spring-loaded pressure and vacuum valves help regulate coolant expansion and recovery, ensuring reliable cooling system performance and protecting the engine from overheating.

FUNCTION AND OPERATION

• Maintains the correct cooling system pressure
• Raises the coolant boiling point for improved cooling efficiency
• Controls coolant expansion and recovery
• Helps prevent coolant loss and overheating
• Protects the radiator and cooling system from excessive pressure
• Designed for agricultural, construction, horticultural, and industrial equipment

TECHNICAL DETAILS

• OEM Part Number: 17214-72020
• Supersedes: 6C040-58660
• Type: Radiator cap assembly
• Function: Cooling system pressure regulation
• Pressure Rating: 0.9 Bar (13 psi)
• Application: Kubota liquid-cooled engines
• Construction: Heavy-duty steel cap with spring-loaded pressure and vacuum valves
• Design: Genuine OEM direct replacement component

TYPICAL APPLICATIONS

Suitable for a wide range of Kubota equipment, including:

• Kubota B Series tractors
• Kubota BX Series compact tractors
• Kubota L Series tractors
• Kubota M Series tractors
• Kubota KX Series mini excavators
• Kubota U Series excavators
• Kubota RTV utility vehicles
• Kubota ZD Series zero-turn mowers
• Kubota GR and F Series ride-on mowers
• Kubota R Series wheel loaders

OEM 17214-72020 is used across numerous Kubota machines equipped with pressurised liquid cooling systems, making it one of the most widely used radiator caps in the Kubota range.

IMPORTANT INFORMATION

Always confirm the correct OEM part number, machine model, engine model, and pressure rating before ordering, as Kubota uses radiator caps with different pressure specifications across its product range. Although 17214-72020 supersedes 6C040-58660, compatibility should always be verified against the machine's parts catalogue.

A faulty or worn radiator cap can cause coolant loss, overheating, poor coolant recovery, or excessive pressure within the cooling system. Common symptoms include coolant escaping from the overflow, collapsing radiator hoses after cooling, or unexplained coolant loss. When replacing the radiator cap, it is advisable to inspect the radiator filler neck, coolant condition, overflow hose, and expansion bottle for signs of damage or contamination. Replacing the cap at the first sign of seal deterioration or spring fatigue helps maintain optimum cooling system performance and prolong engine life.

DELIVERY OPTIONS (UK mainland only)

Next Day Delivery*
£11.95 or FREE for orders over £150
Orders placed before 4pm Monday to Friday will be delivered on the next business day.
Orders placed after 4pm on Friday will be delivered the following Tuesday.
*Next day delivery applies to stocked items only. Availability can be found on the product pages.

Premium Delivery*
£30.00 for delivery before 10:30am
£25.00 for delivery before 12:30pm
*Premium delivery applies to stocked items only. Availability can be found on the product pages.

For all other countries, please click here for full delivery information.

**Separate carriage charges apply to bulk products such as 205L barrels.