What is the spark plug model for Crown?
2 Answers
The original spark plug model for Crown is Denso FK50HR11. The spark plug is a crucial component of the gasoline engine's ignition system. It introduces high-voltage electricity into the combustion chamber and creates a spark by jumping the electrode gap, thereby igniting the combustible air-fuel mixture in the cylinder. The structure of the spark plug is as follows: 1. Steel shell. 2. The metal rod serves as the center electrode. 3. Between the steel shell and the center electrode, there is a high-alumina ceramic insulator that ensures the center electrode remains insulated when electrified. 4. The lower part of the steel shell is equipped with a bent side electrode. 5. The middle part of the steel shell's exterior has a copper gasket.
As a long-time Crown owner, the spark plug model is not something that can be generalized. The Crown has multiple engine configurations from classic older models to newer ones. For example, the 3.0L V6 from the 80s and 90s commonly uses the NGK BKR6E series, but the newer hybrid version uses Denso Iridium IK20 or similar models. You must check the owner's manual for the exact part number—it's in the glove box. Spark plugs affect ignition efficiency; choosing the wrong ones can cause idle shaking, a spike in fuel consumption, and even engine knock damage. I check mine every 20,000 kilometers and replace them with OEM parts if I find carbon buildup or wear—safe and reliable. Upgrading to platinum or iridium spark plugs extends their lifespan, but you must match the heat range, or improper heat dissipation can worsen carbon buildup. Pay attention to engine sounds and fuel consumption changes while driving—it helps detect issues early. Regular maintenance saves both hassle and money.
