Below is a list of British and European cars that are compatible with the NGK HB6AIX-11P / 5703 Spark Plug HB6AIX11P Iridium IX Replaces VKA20 and NGK HB6AIX-11P / HB6AIX11P / 5703 Iridium IX Spark Plug Replaces VKA20 (5703):

- Austin-Healey 3000 1965-1972
- Austin-Healey Sprite 1965-1971
- Jaguar E-Type 1961-1974
- Jaguar Mk II 1960-1967
- Jaguar XK150 1957-1961
- MG MGB 1962-1980
- MG Midget 1967-1974
- Triumph GT6 1966-1973
- Triumph Spitfire 1962-1980
- Triumph TR4A 1965-1967
- Triumph TR6 1969-1976
- Triumph TR7 1975-1981
- Alfa Romeo Spider 1966-1993
- Alfa Romeo Giulia 1962-1978
- Alfa Romeo GTV 1969-1976
- Fiat 124 Spider 1966-1985
- Fiat 500 1966-1975
- Fiat 850 1964-1973
- Lancia Fulvia 1963-1976
- Lancia Stratos 1972-1974
- Lotus Elan 1962-1974
- Lotus Europa 1966-1975
- Lotus Esprit 1976-1980
- Morgan Plus 4 1955-1969
- Morgan 4/4 1964-1974
- TVR Griffith 1963-1967
- TVR Tuscan 1967-1971
- TVR Vixen 1966-1973

NGK

- Part Name: NGK HB6AIX-11P / 5703 Spark Plug HB6AIX11P Iridium IX
- Replaces OEM Part Number(s): VKA20
- Designation: Iridium IX
- Features: Extreme ignitability, improved throttle response, superior anti-fouling, fine iridium tip, high durability, consistently stable spark, high melting point, trivalent metal plating, superior anti-corrosion and anti-seizing properties, outstanding acceleration, high fuel efficiency, ultimate design, technology, and performance
- Compatibility:
- NGK HB6AIX-11P / HB6AIX11P / 5703 Iridium IX Spark Plug Replaces VKA20 (5703)
- Cross Reference Table (if unsure about compatibility):
- Please contact us for assistance.

Standard shipping with tracking via Royal Mail or Evri for heavier parts:
- £4.99 per order for standard 2-day delivery
- £5.99 per order for Next Day delivery

Most orders are shipped the same business day if ordered before 2pm. We ship Monday through Friday.

If we unexpectedly run out of stock we may have to order your part which can take up to 1 week. We will be in touch in the rare circumstance that there is a delay to your shipment.

We want you to be completely happy with your purchase but please do not hesitate to contact us immediately if you have a problem with your order. Please ensure that you consider all the points described on our profile page accessible by clicking our name above the product title.

It is especially important that you take due care to ensure that the part you selected is compatible with your car. If in doubt, we'd prefer that you get in touch via our profile page so we can help you.