Karlyn-STI Spark Plug Wire Set; OE Type with Loom and Coil Wire | 12121722253
Make Sure It Fits
Spark plug wires carry high voltage from either an ignition distributor or an ignition coil to spark plugs to create the spark needed for engine combustion. Spark plug wires, sometimes referred to as ignition wires or high tension lead, are large gauge solid copper or carbon fiber wires. They contain a conduction suppressive insulator to prevent electrical arcing, a fiberglass braid coating to prevent breaking, a rubber or silicon outer jacket to protect the wire from engine heat and fray, and an electrical connection on each end covered with a boot, one for the spark plug and one for the connection to the distributor cap or ignition coil. Spark plug wires are manufactured at just the right length to reach the spark plug and no more to reduce potential resistance that can hinder voltage flow.
Spark plug wires are capable of carrying voltage as high as 50,000 volts. Carrying this much voltage in one direction causes the electrical terminals to wear down over time. Furthermore, the rubber or silicon jacket of the spark plug wires can wear allowing the inner insulator layer of the spark plug wire to become exposed and wear, causing the wire to arc voltage to the engine, weakening the spark created by the spark plug and lowering engine performance and fuel economy.Replacing Your BMW Spark Plug Wires
Spark plug wires should be replaced at regular intervals along with the spark plugs, and if equipped, with the distributor cap and distributor rotor. Spark plug wire replacement intervals vary based on the auto manufacturer and can range from 30,000 all the way to 100,000 miles.
Spark plug wires can be difficult to remove and replace depending on their position in the engine bay. Special spark plug wire removal tools are available to make it easier to reach and remove spark plug wires.
View more BMW Spark Plug Wires.
Frequently Viewed Together
We found 10 additional part(s) that are frequently viewed together.
- Pregapped for normal usage.$3.29Reg$3.43List$13.32$22.59Reg$23.53List$51.62
Why Buy OEM & Genuine Replacement Auto Parts from AutohausAZ?
Auto parts at wholesale prices is what you will find at AutohausAZ. Have you been searching the web for auto parts for your vehicle? You have come to the right place! Here at Autohaus, we strive to offer low prices on quality replacement parts and providing first rate customer service.
Flat-Rate Standard Shipping
AutohausAZ offers discounted flat-rate Standard shipping on any auto parts orders shipped within the Continental USA.Learn More About Our Shipping
EZ Parts Returns
Your auto parts purchases are protected by AutohausAZ's customer-friendly returns policy.Learn More About Our Returns Policy
3-Years/36-Months Auto Parts Warranty
AutohausAZ offers industry-leading 3-years/36-months warranty on all auto parts purchases.Learn More About Our Warranty
Faster One-Page Checkout
We streamlined our checkout process to get your order on the way faster.Learn More About Our Checkout Process
Discounted International Shipping
AutohausAZ offers 65% discount on UPS shipping options for our international customers.Learn More About Our International Shipping
Customers Love Us
Check out what customers have to say about AutohausAZ on Google.Read Our Reviews on Google
What This Karlyn-STI Spark Plug Wire Set Fits?
Application information below is for reference only and should not be used to determine the exact vehicle fitment. Please use the "Make Sure It Fits" vehicle selection box above to determine the exact fitment and review any application notes. If you need any help determining if this part works with your vehicle, please don't hesitate to contact us.