2004 Subaru Impreza Spark Plug Boots

CARQUEST Premium coil on plug boots are engineered to restore ignition boot reliability and performance. We have OE design providing an exact direct fit for your application and the performance and durability meet or exceed OE requirements. It offers excellent heat resistance as well as maximum protection against spark loss. With durable silicone compound for resistance to high heat or abrasion.

Product Features:

• Provides excellent heat resistance as well as maximum protection against spark loss.
• Durable silicone compound for resistance to high heat or abrasion
• Spring included with the coil boot
• Design for direct compatibility
• OE design provides an exact fit for your application
• Multipack provides one time replace all COP for better deal

NGK Resistor Spark Plug Wire Sets utilize a construction method known as variable pitch wire winding to create resistance to radio frequency interference. The variable pitch winding (loose/tight/loose) provides suppression throughout a very wide range by scrambling and breaking up the electrical waves radiated by the firing of the spark plugs. A ferrite magnetic layer consisting of a mixture of rubber, plastic and powdered ferrite magnetic materials, offers uniform resistance and unsurpassed conductivity. NGK wires have a lower resistance than conventional carbon core wires (8k ohm/meter versus 16k ohm/meter). This comparison is important to remember when you consider that many manufacturers recommend wires be replaced when the resistance exceeds 20k ohm/meter. This does not leave much margin for wear when the wire may only meet original standards at the very early stages of its life.

Product Features:

• OE-Equivalent.
• OEM style connectors for easy Installation.
• Superior Firing and Fuel Savings
• Outstanding Durability and Performance
• Excellent Noise Suppression
• Numbered for easy cylinder identification.
• High quality EPDM and Silicone coverings.

Prenco Coil on Plug Boots provide the best protection possible for your ignition system versus the harsh environment created by the modem day engine. Prenco Coil on Plug Boots are constructed using the finest quality materials and compounds, and produced with superior quality tooling that exactly matches the Original Equipment Boot.

Product Features:

• Prenco Coil on Plug Boots are produced using precise computer designed tooling and premium quality materials/compounds that are formulated to perform in extreme temperatures.
• Prenco Coil on Plug Boots are designed as a direct replacement for the OE Boot. Springs, grommets and ferrite resistors are provided for all applications where applicable.
• Inspect and replace Coil on Plug Boots every 50,000 miles and/or with every spark plug change to ensure optimum engine efficiency and performance.
• Replacing Coil and Plug Boots at regular intervals will prevent/correct misfires and will help to minimize further costly damage to Ignition Coils, Sensors, Catalytic Convertors, and ECUs.