Mercedes-Benz Heater Valve Seal and Diaphragm Kit - 0018301484

The seals and diaphragms service the internal sealing section of the heater control valves in Mercedes-Benz S-Class W140/C140 applications. VN-140 contains no cones; match the installed valve reference before ordering.

Vehicle Applications

• Mercedes-Benz S-Class saloon (W140)
• Mercedes-Benz S-Class coupe (C140)

When to Inspect the Heater Valves

• The heater blows only hot air.
• The heater blows only cold air.
• Cabin temperature cannot be adjusted.
• Left and right air temperatures differ.
• Cabin heating is weak in winter.
• Coolant leaks through the heater valve.

Check the heater valve block to establish the cause. These symptoms do not identify a failed cone or sealing component by themselves.

Kit Contents

Seals and diaphragms only. Valve cones are not included.

Valve References

• 0018301484
• 0018300784
• 1147412063

Additional References

653590728832.

Repair Scope

The internal repair components can be serviced while retaining a sound housing and serviceable solenoids. Worn seals can cause coolant leakage; inspect the housing because cracks may require replacement of the complete unit.

Important Before Ordering

Compare the installed heater valve OEM/P/N, marking and physical design with the listed references. Different valve versions may be fitted to the same vehicle model.

FAQ

Does VN-140 include cones?

No. It contains only seals and diaphragms.

Which Mercedes applications are listed?

Mercedes-Benz S-Class W140/C140 applications are listed above by body style and chassis. Compare the installed valve reference.

Is a leaking housing repaired by changing internal components?

Inspect the housing first. Cracks may require replacement of the valve assembly rather than an internal repair.

Part Number / PN

0018301484 0018300784 1147412063, 0018301484, 0018300784, 1147412063, 653590728832

SKU: VN-140.

Heater valve repair kits

• Mercedes

Returns and exchanges

Request a change-of-mind return within 14 calendar days of delivery, then send the goods within 14 calendar days of notifying us. Our voluntary return option applies to unused, uninstalled, complete goods in their original condition and packaging. Exchanges are subject to availability and agreement.

The customer pays change-of-mind return shipping. No restocking fee applies. Refunds and original delivery charges are handled under our Refund & Return Policy and applicable law.

Faulty, damaged or incorrect goods

Email contact-us@klifex.net with your order details and a description of the problem. These claims are separate from change-of-mind returns. Where we are responsible, we bear the required remedy and return costs. Installation alone does not remove mandatory defect rights.

Your legal rights

Applicable statutory rights take precedence, including EU/EEA and UK withdrawal rights and legal guarantees. Necessary inspection does not remove a statutory withdrawal right; deductions for excessive handling must reflect an actual, evidenced loss of value.

Contact us for the correct return address before shipping. Our legal address is not a return address.

Read the full Refund & Return Policy