Car Radiator Cap Replacement Cost in UAE (2026)
The radiator cap is the smallest and cheapest component that can cause engine overheating — yet it is often overlooked in UAE overheating diagnosis. A faulty radiator cap costs AED 20 to 150 to replace and can cure an overheating problem that might otherwise lead to a blown head gasket (AED 3,000 to 8,000). Cooling system pressure testing, including the cap, is an essential early diagnostic step for any UAE overheating complaint.
Radiator Cap Replacement Cost UAE 2026
| Vehicle Type | OEM Cap (AED) | Quality Aftermarket (AED) |
|---|---|---|
| Toyota Camry / Corolla / RAV4 | 40-90 | 20-50 |
| Toyota Land Cruiser / Prado | 50-100 | 25-60 |
| Nissan Altima / Patrol / X-Trail | 40-90 | 20-50 |
| BMW 3 / 5 / X5 | 80-180 | 40-100 |
| Mercedes-Benz C / E / GLE | 80-200 | 45-120 |
| Hyundai / Kia (various) | 35-80 | 15-45 |
Labour is minimal — a radiator cap is a simple replacement. The majority of the service cost is the diagnosis fee if one is charged separately. Ask the garage to pressure-test the cap first (using a cooling system pressure tester) to confirm it is failing before paying for a replacement.
Radiator Cap Pressure Rating — UAE Considerations
Radiator caps are rated to a specific pressure (typically 0.9 to 1.1 bar). Never fit a cap with the wrong pressure rating — a cap that is too low will cause the system to vent coolant prematurely, and a cap that is too high can over-pressurise the system. In UAE, where some drivers buy generic caps from roadside stalls, mismatched caps are a surprisingly common cause of repeated overheating complaints. Always use a cap rated to the manufacturer specification, which is usually printed on the cap itself.