Sealey Double End Spark Plug Box Spanner

The 18mm x 21mm Sealey Double End Spark Plug Box Spanner (Model MS161) is designed for larger capacity engines and commercial vehicle applications. This variant provides the two most popular sizes for bigger engines, including many trucks, vans, and larger displacement cars. The 18mm and 21mm configuration makes it indispensable for workshops servicing a diverse fleet or mechanics working on heavier vehicles. Constructed in the traditional long reach style, this spanner excels in accessing spark plugs positioned deep within engine compartments, a common challenge with moder