Find answers to common questions about WOWLTZ Engine Park Plugs Explore our FAQs for help with products, services, and partnership inquiries.

Following the recommendations of the vehicle manufacturer. WOWLTZ spark plugs should be replaced at least as often as the vehicle manufacturer recommended change interval. We always recommend that you replace WOWLTZ spark plugs with the same metallurgy as your OE plug or upgrade to iridium. We suggest you refer to your vehicle owner’s manual, local vehicle dealer, or refer to a reputable automotive service facility for information on appropriate mileage service intervals.

Spark plug installation may require the removal of engine components and may require that specific vehicle manufacturer procedures be followed to ensure proper service and safety. It is recommended that you follow the instructions listed in the vehicle service manual or as instructed by your local vehicle dealer or a reputable mechanic for specific spark plug service and replacement.

  • The WOWLTZ brand recommends that do-it-yourselfers follow manufacturer’s recommendations on spark plug change intervals. It is good maintenance procedure to change all the plugs simultaneously.
  • Always be sure the engine is cool before beginning and gather all essential tools and products needed for the change, including replacement plugs, spark plug socket & ratchet, and mechanics gloves.
  • Rotate boots 90-180 degrees before attempting to pull them off. This helps break the boots loose without tearing. Do not pull on the wire.
  • Before removing the old spark plugs, clean debris from the side of the plug area by using air pressure (use a shop vacuum). This helps prevent any debris from falling into the cylinder and causing engine damage.
  • Look at the old spark plug tips to see if the engine has a problem that needs correcting.
  • When gapping new plugs, use a round, or loop, feeler gauge. It will give you a more accurate reading and will also help extend the life of the spark plug.
  • If having a hard time installing plugs, installers should use a piece of hose to extend their reach.
  • After final assembly, visually look to make sure all wires are properly routed so that they are not lying on the hot manifold or in the way of other objects that can cause damage.

If you have any questions regarding your WOWLTZ spark plugs, reach out to WOWLTZ’s Customer Service to consult with one of our technicians. You can also submit an inquiry through our Technical Support chat form located on the contact page.

The spark plug is an integral part of the ignition system with its primary function is to generate a spark from the C.E. (center electrode) to the G.E. (ground electrode).

This spark is used to create heat to ignite the air/fuel mixture within the cylinder creating the combustion to force the piston downward causing the crankshaft to turn and create torque and power ultimately turning the wheels.

Spark plugs must endure severe temperatures, pressure, high voltage, and other factors that demand a lot from a plug to perform at a high level constantly over a long period of time.

Spark plugs are available in different metallurgies, designs, and specifications. The variations are required to match engine requirements and provide alternative performance benefits. Since the 2000’s OE’s have primarily used iridium plugs to meet their performance needs. It is important to understand the needs of your vehicle when identifying replacement spark plugs.

It is very important to properly tighten spark plugs during installation. Too little torque can cause the spark plug to leak combustion gases and poor heat transfer of the plug seat to the cylinder head. Over-torque can damage both the spark plug and the threads in the engine head. Both can cause extensive engine damage. Your WOWLTZ Catalog lists the proper torque specs for various spark plug sizes.

Spark plug lifespan varies depending on a variety of factors from metallurgy, engine & plug design, and driving habits. There are advantages to using precious metals and center & ground electrode enhancements and designs. Use in some engines this will provide superior performance and in others provide the performance needed for your engine to perform as designed. Using plugs with lower quality materials or standard designs will impact performance and life. Always check your vehicles owner’s manual to make sure you are using the right parts and replacing them at the right frequency to ensure engine health. 

Spark plug tips, either the electrodes or the ceramic insulator, can be damaged in a variety of ways. Damage such as cracked ceramic or bent electrodes can be the result of shipping and handling, from mishandling and improper adjustments, or from mechanical damage within an engine. If an incorrect spark plug is used, it could come into contact with a piston or valve within the engine. Spark plugs can also be damaged by detonation or pre-ignition while in service.

Spark plugs can become “fouled” by excessive fuel, oil or combustion deposits in the combustion chamber. Essentially what this means is that the spark plug insulator tip has become coated or covered by deposits which can conduct electricity. The spark plug has become “short circuited”. In other words, the electrical current will now flow from the center wire over the insulator’s deposits, to ground at the steel shell. It will not be able to produce a spark at the electrodes.

We use what is called a “rating engine” to match up plugs. The process begins by buying the OE spark plugs and carefully measuring them. Our engineers then match the physical qualities with several WOWLTZ plugs. Then we run the OE spark plug in our rating engine. The data from this engine tells us the heat range of the OE spark plug. We use this information to precisely match an WOWLTZ spark plug to both the heat range and dimensions of the Original Equipment plug.

  • Iridium finewire designs are engineered to offer improved ignitability and durability over a standard designs or other metallurgies.
  • More focused ignition to prevent fouling than standard plug
  • More horsepower and better fuel efficiency than standard plug
  • Larger flame kernel for more complete burn, faster starts and better performance & fuel efficiency
  • Optimum Performance
  • Less firing voltage for more coil dwell time

No, diesel engines do not have spark plugs.  Diesel engines use glow plugs which create ignition using temperature instead of creating a spark. It is always important to reference your owner’s manual or parts specialist to ensure you are using the proper equipment for your vehicle.

No, spark plugs, and glow plugs are not universal. They must match your vehicle’s specific engine requirements. There are many technical specifications that make plugs unique to certain applications to ensure proper fit, form, & function. Always refer to your owner’s manual or consult a parts specialist to find the correct spark plugs for your car.