Get NAPA Belden plug wires, they have a engine lifetime warranty.
Quote:
Your new NAPA® Belden® spark plug wire set is warranted to you, the original customer to be free of defects in material and workmanship (as determined solely by NAPA® Belden®) for the entire life of the engine on which it was originally installed for as long as the engine is owned by the original purchaser of the spark plug wire set, subject to the limitations set forth below. NAPA® Belden® will repair or replace, at its option, the NAPA® Belden® product if it is proven defective under normal use and service. The NAPA® Belden® product must be shipped prepaid or delivered to a participating NAPA® store in the United States. Proof of the date of sale to the original customer may be required.
This warranty does not include labor or cover the cost of any other components or labor required to restore the motor vehicle to its proper operating condition.
This warranty does not apply to NAPA® Belden® products that have been: 1) altered; 2) improperly installed, maintained or repaired or installed on a second engine or motor vehicle; 3) damaged by accident, negligence or misuse; 4) used in commercial, fleet, heavy duty, off road, public or governmental vehicles; or 5) returned with missing components or parts that were originally included in the package.