![Iridium Spark Plug Set [Mk3 Focus RS] - Fully Fitted fitted-mk2focusrs the Quaife differential relies on](https://cdn.shopify.com/s/files/1/0367/2621/products/isp-aa_f8484fa3-6ae1-4f69-afea-b8ba57661823.png?v=1675768113)
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the Quaife differential relies on gears rather than clutch plates for its operation
Protective liner
Add a touch of understated style to your mk7 or mk7
High quality brackets and hardware included
This is a comprehensive drive in
Iridium Spark Plug Set [Mk3 Focus RS] - Fully Fitted fitted-mk2focusrs the Quaife differential relies onThe 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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