The DENSO Iridium Power IKH20 Spark Plug (4PCS) is designed for drivers seeking enhanced engine performance, quick starts, and improved fuel economy. With a super-fine 0.4mm iridium alloy center electrode—among the thinnest in the world—this plug delivers exceptional ignitability and combustion efficiency, especially under high-stress or high-RPM conditions.

Built to resist wear and oxidation, the IKH20 is ideal for both naturally aspirated and turbocharged engines. Though not an OEM spark plug, it is often used as a high-performance upgrade for many vehicles originally equipped with standard iridium spark plugs.

Key Features:

1. Ultra-fine 0.4mm iridium center electrode for superior combustion
2. Enhanced throttle response and fuel efficiency
3. High thermal conductivity for stable spark in extreme conditions
4. Long-lasting performance with reduced voltage requirements
5. Compatible with a wide range of Japanese, European, and American vehicles

OEM & Cross References:

Toyota OEM Part Numbers:

1. 90919-01191
2. 90919-01235
3. 90919-01247
4. 90919-01266
5. 90919-A1002

Honda OEM Part Numbers:

1. 12290-RBJ-003
2. 12290-RMX-003
3. 12290-RMX-004
4. 12290-RMX-013
5. 12290-RMX-014
6. 12290-RW0-003
7. 12293-PHM-A01

Cross-Compatible With:

1. DENSO FK20HR11 – often used in Toyota/Lexus as OEM. IKH20 is a performance-oriented alternative with matching specs (thread, reach, heat range).
2. NGK ILKAR7B11, ILFR6B – similar iridium plugs used in modern Japanese engines.

Please consult your vehicle’s manual or a qualified mechanic to confirm suitability before replacement.