![Iridium Spark Plug Set [Mk3 Focus ST] - Fully Fitted Quick shift Silicone/bronze pin bushings provide a](https://cdn.shopify.com/s/files/1/0367/2621/products/isp-aa_a9966774-b0a8-4322-89ae-39295901ad43.png?v=1675767030)
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Silicone/bronze pin bushings provide a durable and low friction surface that remains dimensionally stable in high pressure and high RPM applications
- tested for turbochargers and catalytic converters
Almost twice as efficient as the OE cooler*
Direct replacement for factory part
Iridium Spark Plug Set [Mk3 Focus ST] - Fully Fitted Quick shift Silicone/bronze pin bushings provide aThe mountune Iridium Spark Plug Set is pre gapped by mountune to the optimised setting. EcoBoost engines running substantially higher boost pressure, or increased levels of tuning compared to the OE power output, can experience reduced spark plug life resulting in lower engine performance, misfires and rough idle. This product includes a fixed labour charge for installation at mountune HQ in Hutton, Essex. This is a comprehensive drive in, drive out
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