![Iridium Spark Plug Set [Mk8 Fiesta ST | Puma ST | Focus 1.5 | Kuga 1.5]](http://cdn.shopify.com/s/files/1/0367/2621/products/2709-ISP-AA_2048x.png?v=1619090807)
2709-ISP-AA
£37.08 GBP
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.
Increased wear is typically seen in the form of increased spark plug gap and degradation of the electrode. Using spark plugs that are optimised for increased power ensures maximum performance.
Extensive in-market validation at extreme boost / cylinder pressures was undertaken to ensure optimal performance was achieved, whilst also making sure reliability and drivability wasn't compromised in colder ambients.
Each set is supplied pre-gapped by mountune to optimise the setting and allow for easier end-user installation.
The NGK LTR71X-II is one step colder than the original spark plug.
Applications:
Features:
Please note: Supplied in a pack of 3 plugs.
United KingdomEasy to install on the MK4 Focus and very well made. As stated, acceleration is smoother especially in the lower revs and the engine feels more responsive. It must be said that it was installed along with the Mountune High-Flow throttle body elbow, so I'm very pleased about the overall results.
United KingdomA must have if you’re going to improve the performance of your engine.
United KingdomGreat service, having the plugs come pre-gapped saves lots of hassle. Fitting due to M235/M260 install and a no-brainer to fit these at this cost.