NGK P541A-91502 Radiator Cap 91502 Standard Type

【NGK P541A-91502 Radiator Cap 91502 Standard Type】
■Product Description
NTK radiator caps maintain proper pressure within the radiator through the action of the main pressure valve (pressure valve) and the negative pressure valve.
When the temperature rises and the pressure becomes too high, the main pressure valve inside the cap activates to regulate the pressure.
Conversely, when the temperature drops and the pressure decreases, the negative pressure valve activates to maintain proper pressure within the radiator.

Specifications
Opening Pressure: 108kPa (1.1kg/cm2)
NTK radiator caps prevent engine overheating by increasing the pressure inside the radiator and raising the boiling point of the coolant. For example, with an opening pressure of 88kPa, the boiling point of water rises to approximately 120°C, an increase of 20°C above normal.
【Features】
Main components are made of stable materials with excellent rust resistance.
Individual parts are optimally designed for superior strength and durability.
The rubber material used for the seals has improved heat resistance and LLC resistance.
【Side Effects of a Faulty Radiator Cap】
Deterioration/deformation of the seal, damage to the seal, dirt/rust/deposits, etc., inside the radiator cap can impair the operation of the main pressure valve and negative pressure valve, leading to overheating.
【Replacement Procedure】
Removing the radiator cap when the coolant temperature is high immediately after stopping the engine can cause hot water and steam to spurt out,
posing a risk of burns.
Perform the work only after the engine has sufficiently cooled down and the water temperature has dropped.
1. Prepare a towel or similar item.
2. Place the towel over the radiator cap and slowly loosen it.
Stop midway to release the pressure inside the radiator.
3. After releasing the pressure, slowly remove the radiator cap.
Be careful not to remove it abruptly, as hot water and steam may spurt out.
4. Check the condition of the removed radiator cap.
5. Check the operating condition of the radiator cap with a radiator cap tester.
Even if the radiator cap appears to be in normal condition, the opening pressure may have decreased due to spring fatigue.
6. When installing a new radiator cap, tighten it securely until the claws meet the stopper position.
Type: Standard Type
Compatible Manufacturer: Honda
Compatible Genuine Part Numbers: 19045-P36-004, 19045-PM3-003

■Notes on Images
※Images are for illustration purposes only. They may include products of different sizes or colors. Product design and specifications are subject to change without notice. Please understand.

■Precautions
When inspecting or replacing, always stop the engine and perform the work when the engine is cold. This will prevent fire and burns.
Do not use this product on vehicles other than those for which it is compatible. This can cause overheating.
Always check your vehicle's model year, model type, and engine type using your vehicle inspection certificate, etc.
Even if the model year, model type, and engine type are the same, the compatible radiator cap may differ, so please check the actual product (shape and pressure).
Immediately after driving, the coolant is under pressure, and when the radiator cap is removed, hot water and steam may spurt out, posing a risk of burns. Remove the cap only after the engine has sufficiently cooled and the water temperature has dropped.
After removing the old radiator cap, if any foreign matter is adhering to the mounting surface, wipe it clean before installing the new radiator cap.
When installing the radiator cap, ensure it is securely tightened until the claws of the radiator cap meet the stopper position of the radiator body's opening.