The DENSO IK16 Iridium Spark Plug, manufacturer part number 5303 and vendor part number 5303, is engineered to deliver dependable ignition performance for compatible automotive applications. Its iridium center electrode provides exceptional heat resistance, withstanding temperatures up to 4,000°F, while supporting consistent spark formation under demanding operating conditions. The fine 0.016-inch iridium electrode design helps reduce required firing voltage and promotes reliable ignition.
Designed for long-lasting performance, this DENSO spark plug uses 360-degree laser welding around the electrode to create a secure seal that resists wear, vibration, and harsh engine conditions. The tapered-cut ground electrode and U-groove configuration create a larger flame-center area, helping support efficient combustion and stable engine operation. These features make the IK16 a practical replacement for applications requiring a high-quality iridium spark plug.
For proper fitment, verify that the DENSO IK16, part number 5303, matches your vehicle’s year, make, model, engine, and original equipment specifications before installation. This spark plug is intended for compatible automotive ignition systems and should be installed according to the vehicle manufacturer’s service procedures. DENSO manufacturer and vendor part number 5303 provide a reliable reference when confirming application compatibility.
Features:
- Iridium Center Electrode: Withstands temperatures up to 4,000°F for dependable performance in demanding engine conditions.
- Fine Electrode Design: Uses a 0.016-inch iridium electrode to help reduce firing voltage and improve ignition performance.
- 360-Degree Laser Welding: Creates a secure electrode seal designed to resist wear and harsh operating conditions.
- Tapered Ground Electrode: Helps concentrate the spark and support efficient flame development.
- U-Groove Ground Design: Provides a larger flame-center area for stable combustion.
- Vehicle Fitment: Designed for compatible automotive applications; verify year, make, model, engine, and original equipment specifications before installation.
- Brand and Part Number: DENSO IK16, manufacturer and vendor part number 5303.