The Autolite XS4303 iridium-enhanced finewire spark plug is designed to provide focused ignition performance for compatible gasoline engines. Its 0.6 mm finewire center electrode and Sport V-trim ground electrode help improve ignitability while reducing the likelihood of spark plug fouling compared with a leading standard plug. This design supports dependable ignition performance in everyday driving and demanding operating conditions.
Feature: Iridium-enhanced electrode construction helps provide improved durability and consistent spark performance. The finewire design concentrates the ignition spark for more reliable combustion, while the Sport V-trim ground electrode is engineered to promote efficient ignition and long service life. Autolite specifies up to 26% quicker starts than a leading standard plug, along with the potential for increased horsepower and improved fuel efficiency compared with conventional spark plugs.
The Autolite XS4303 is manufactured to meet or exceed OEM design requirements and is intended as a direct replacement for applications that specify this part number. Verify vehicle fitment, engine application, heat range, reach, and gap requirements before installation. Manufacturer part number: XS4303. Vendor part number: XS4303. Install and gap the plug according to the vehicle manufacturer’s service specifications.
Features:
- Brand: Autolite
- Model: XS4303
- Manufacturer Part Number: XS4303
- Vendor Part Number: XS4303
- Electrode Design: Iridium-enhanced 0.6 mm finewire center electrode with Sport V-trim ground electrode
- Ignition Performance: Designed to provide more focused ignition and help reduce fouling compared with a leading standard plug
- Starting Performance: Up to 26% quicker starts than a leading standard plug
- Engine Performance: Designed to support increased horsepower and improved fuel efficiency compared with a standard spark plug
- Fitment: Direct replacement for compatible vehicle applications requiring Autolite XS4303; verify application specifications before installation
- Quality Standard: Meets or exceeds OEM design requirements