HR7MEV Bosch Super 4 Spark Plugs x4

• Heavy-duty yttrium-enhanced copper core center electrode
• Superior reliability & durability for 50% longer performance life vs. even OE plugs
• Tapered, v-profile nickel chromium ground electrode
• Improved starting in cold weather and increased fuel ignitability
• Nickel-plated rolled threads
• Complete anti-seize and corrosion protection
• Metal glass fused resistor
• Maximum interference suppression
• Angular, five-ribbed insulator design
• Prevents misfire due to current leakage

Bosch Spark Plugs deliver quality performance based on technology that's proven on racetracks around the world in the most sophisticated racing engines. Testing has confirmed the durability of yttrium-enhanced centre electrodes. Now Bosch brings these benefits to you in Bosch Spark Plug range. The longest-lasting copper core spark plug on the market.