This ACDelco Professional spark plug, model 41-801, is a vital component for any ignition system. Measuring 4.19 inches in length, it is designed for precision and consistency in sparking, ensuring smooth and efficient engine operation. The brand is known for its quality and reliability, making it a top choice for mechanics and DIY enthusiasts alike. The spark plug is suitable for use in a variety of vehicles and is compatible with the manufacturer part number 41-801. Whether you're replacing a worn-out spark plug or upgrading to a more reliable option, this ACDelco Professional spark plug is an excellent choice.