Keep your small-engine equipment firing with the Autolite spark plug 458, a copper-core plug cataloged for a huge range of Briggs & Stratton, Kohler, and Tecumseh-powered machines — aerators, air compressors, blowers, augers, and more. See the "Vehicles it fits" section for the full list of listed applications.
- Copper-core center electrode: the copper core aids in thermal control and helps improve resistance to fouling.
- High-nickel-alloy electrodes: the nickel-tipped center and ground electrodes are designed for extended service life.
- High-alumina multi-rib ceramic insulator: provides thermal conductivity and insulation for added strength.
- Nickel-plated shell: a corrosion-resistant finish for added durability.
Key specs: M14 - 1.25 thread, 14 mm thread diameter, 0.374 in (9 mm) reach, flat seat, 13/16 in hex, and a non-removable terminal nut. It ships pre-gapped at 0.03 in (0.8 mm) with a flat washer included, and is a non-resistor plug (1 ohm) at Manufacturer Heat Range 2. Always confirm the correct plug, gap, and heat range for your specific engine before installing. Backed by a 2-year limited warranty. Country of origin: China.
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
What is the pre-gap and seat type on the Autolite 458?
It ships pre-gapped at 0.03 in (0.8 mm) with a flat seat and an included flat washer. Verify and set the gap to your engine's specification before installing.
What are the thread and reach specifications?
The 458 uses an M14 - 1.25 thread with a 14 mm thread diameter, 0.374 in (9 mm) reach, a 13/16 in hex, and a non-removable terminal nut.
Is the Autolite 458 a resistor spark plug?
No. The Resistor Type attribute is listed as No, with a stated resistance of 1 ohm and Manufacturer Heat Range 2.
What is the center electrode made of?
It has a copper-core center electrode with a nickel tip. The copper core aids thermal control and helps improve resistance to fouling, and the electrodes use a high-nickel alloy for extended life.
What equipment does the Autolite 458 fit?
It is cataloged for thousands of small-engine applications, including many Briggs & Stratton, Kohler, and Tecumseh powered blowers, augers, aerators, and air compressors. See the "Vehicles it fits" section for the full list.
