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2709-ISP-AA

Iridium Spark Plug Set [Mk8 Fiesta ST | Puma ST | Focus 1.5 | Kuga 1.5]

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:

  • Fiesta ST 2017-current
  • Puma ST 2020-current
  • Focus 1.5 (3-cylinder, 150PS / 180PS) 2018-current
  • Kuga 1.5 (3-cylinder, 150PS) 2019-current

Features:

  • Smoother acceleration
  • Perfect for high boost applications
  • Supplied pre-gapped by mountune

Please note: Supplied in a pack of 3 plugs.

Customer Reviews
4.9 Based on 17 Reviews
5 ★
94% 
16
4 ★
6% 
1
3 ★
0% 
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2 ★
0% 
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1 ★
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Filter Reviews:
    TS
    30/01/2023
    Trevor S.
    United Kingdom United Kingdom

    A must for best performance.

    Not particularly cheap but essential for continuing to get the best out of my other Mountune goodies.

    DG
    14/11/2022
    Daniel G.
    Spain Spain

    Iridium Spark Plug

    Quality parts. Good performance!

    J
    25/10/2022
    Joe
    United Kingdom United Kingdom

    As expected

    Received as expected, and glad they are pre gapped saved some time on install