Spectra Premium C551M4 Ignition Coil

• Unit is designed to Original Equipment (OE) fit, form and function requirements accomplished by leveraging Spectra Premium's OE engine management systems design expertise

• 100% copper base in both primary and secondary windings

• Windings insulated by high voltage enamel coating

• Unit is tested for durability through long-cycle thermal shock test (-50 to 300°F), ensuring reliabilty against extreme vibrations

• Each new coil is road tested to ensure real world performance and to verify that each design meets Spectra Premium's high standards for quality