

🛠️ Keep your engine cool, your ride smooth, and your confidence high.
The ACDelco GM Original Equipment RC111 Radiator Cap is a precision-engineered, spring-loaded cap designed to maintain 18 PSI pressure in your GM vehicle’s cooling system. Crafted from durable stainless steel, it raises the boiling point of engine coolant, ensuring optimal performance and preventing leaks. Compatible with most GM models, this OEM part guarantees reliable, long-lasting protection and is highly rated by users for maintaining system integrity.





| ASIN | B000IZ5E1M |
| Brand | ACDelco |
| Customer Reviews | 4.7 4.7 out of 5 stars (450) |
| Date First Available | 7 Aug. 2012 |
| Exterior | Stainless Steel |
| Item Weight | 63.5 g |
| Item model number | RC111 |
| Manufacturer | ACDelco |
| Manufacturer part number | 15293434 |
| OEM Part Number | 15293434 |
| Product Dimensions | 6.35 x 6.1 x 3.81 cm; 63.5 g |
J**T
It’s an OEM part for my Chevy Impala 2006 3.5L by GM. It works just fine, it keeps my cooling system pressurized properly, I can feel the hoses get tight. No leaks. Ops check good at this time.
P**N
Worked. Cooling system holds pressure. Have be able to ignore this issue ever since.
D**O
Perfecto
R**N
I was losing heat inside my van when I was not moving. It turns out that the radiator cap was not holding pressure in the heating/cooling system, allowing air to pass through the heater without being heated. I replaced the cap with this OEM model and things have been fine ever since. Price was way less than from the dealer and shipping was quicker than advertised.
O**N
18 PSI cap for 2008 Impala 3.5 liter. Fit was perfect and installed easy with no leaks. GM cap at a great value.
Trustpilot
1 week ago
2 weeks ago