SMP Improves on OE Spark Plug Insulator for Import Wire Sets SMP’s wire & cable division is the first to market with a dual direction locking terminal that matches the OE, but eliminates the original equipment terminal pull-off problem. Engineered with stainless steel terminals, this advanced design has a “locking” feature that ensures perfect service. Primarily used on import applications, this terminal is a component of almost every overhead cam engine. Most original designs do not have a locking mechanism but require a complex installation procedure for proper fit. When removal is required, the original design typically cannot be re-installed properly. The SMP terminal solves this OEM problem with key benefits for the technician. SMP’s unique locking feature eliminates terminal pull-off, a flaw in the original design. The SMP dual lock terminal will not back out making installation and removal flawless. The SMP innovation has improved on the OE without increasing manufacturing costs. Count on SMP for innovative solutions to complex automotive problems.