Spark Plug (Pack of 4) - Autolite AR3924

• This 4 pack Autolite Racing AR3924 Spark Plug replaces Jeep 71, Jeep 7373, parts and is perfect for replacement or a performance upgrade. ULTIMATE RACING PERFORMANCE: Autolite Racing Hi-Performance Spark Plugs are actual racing spark plugs used by many professional car drivers. Packed with innovative technology, the Yttrium-Enhanced Alloy enables up to 8% reduction in sidewire temperature for colder heat ranges designed to enable performance modifications and handle intense conditions HIGHEST QUALITY COMPONENTS: Each Autolite Racing Spark Plug includes a cut back ground electrode for better ignitability of the flame kernel, and nickel plating to prevent rusting (better than black oxide). All Racing Spark Plugs are designed specifically for racing applications RELY ON RELIABLE, HIGH-QUALITY SPARK PLUGS: Autolite produces exceptional, quality spark plugs for foreign and domestic vehicles, no matter the make or model. From iridium performance to long-lasting platinum and double platinum to premium small engine plugs, Autolite Spark Plugs provide optimal durability, ignitability, and fuel efficiency TRUST IN AUTOLITE: Autolite started in 1911 as a buggy lamp manufacturer, but by the 30s, had found its niche in the manufacturing of spark plugs. Their expertise can be seen in the sheer number of plugs made, which in 2007 was over 10 billion spark plugs. Ever innovative and committed to their customers, Autolite continues to find new designs to exceed expectations and deliver on the challenging requirements of modern engines and emissions standards