Spark Plug NGK R PFR 6 B Volvo S8

If you’re a proud owner of a Volvo S8, chances are you’ve come across the NGK R PFR6B spark plug in your maintenance manual or during a routine check-up. This tiny component might seem insignificant, but it plays a huge role in how your car performs. In this guide, we’ll break down what the PFR6B…