Ignite reliable performance every time with the Autolite Copper Spark Plug 4123, engineered for precision and durability. Its copper-glass seal bonds the insulator, terminal post and center electrode together, ensuring a gas-tight, leak-proof connection that delivers full voltage at the spark gap for consistent ignition. The multi-rib insulator minimizes the risk of flash-over, while the one-piece terminal post adds strength and durability. A built-in resistor reduces radio frequency interference (RFI) and slows electrode wear, keeping your engine running smoothly and efficiently under all conditions.
Built with a full copper core electrode and cold-formed steel shell with precision-rolled threads, this spark plug guarantees reliable performance across a wide range of applications. Whether you’re tackling daily driving, high-performance tasks, or off-road adventures, the Autolite 4123 provides dependable starts, optimal fuel combustion and long-lasting durability. Ensure compatibility by verifying all cross-reference listings before purchase and experience the trusted performance Autolite is known for.
Features:
- Copper-glass seal bonds insulator, terminal post center electrode together; assures full required voltage at spark gap; gas-tight seal (100% leak proof)
- Multi-rib insulator reduces danger of ΓÇ£flash-overΓÇØ
- One-piece terminal post adds strength
- Resistor reduces radio frequency interference (RFI) and electrode erosion
- Cold-formed steel shell precision rolled threads
- Full copper core electrode provides better performance in all conditions
- Verify all cross reference listings before purchase
