- Austin-Healey 100/4 1953-1956
- Austin-Healey 100/6 1956-1959
- Austin-Healey 3000 MKI 1959-1961
- Austin-Healey 3000 MKII 1961-1962
- Austin-Healey 3000 MKIII 1964-1967
- Austin-Healey Sprite MKI 1958-1961
- Austin-Healey Sprite MKII 1961-1964
- Austin-Healey Sprite MKIII 1964-1966
- Austin-Healey Sprite MKIV 1966-1970
- Jaguar E-Type Series 1 1961-1968
- Jaguar E-Type Series 2 1968-1971
- Jaguar E-Type Series 3 1971-1974
- Jaguar MK2 1959-1967
- Jaguar MKX 1961-1970
- Jaguar S-Type 1963-1968
- Jaguar XJ Series 1 1968-1973
- Jaguar XJ Series 2 1973-1979
- Jaguar XJ Series 3 1979-1992
- Jaguar XK120 1948-1954
- Jaguar XK140 1954-1957
- Jaguar XK150 1957-1961
- MG MGA 1955-1962
- MG MGB MKI 1962-1967
- MG MGB MKII 1967-1969
- MG MGB MKIII 1969-1974
- MG MGC 1967-1969
- MG Midget MKI 1961-1964
- MG Midget MKII 1964-1966
- MG Midget MKIII 1966-1974
- Morris Minor 1948-1971
- Sunbeam Alpine MKI 1953-1955
- Sunbeam Alpine MKII 1955-1956
- Sunbeam Alpine MKIII 1956-1962
- Sunbeam Alpine MKIV 1962-1964
- Sunbeam Tiger MKI 1964-1966
- Triumph GT6 MKI 1966-1968
- Triumph GT6 MKII 1968-1970
- Triumph GT6 MKIII 1970-1973
- Triumph Spitfire MKI 1962-1964
- Triumph Spitfire MKII 1964-1967
- Triumph Spitfire MKIII 1967-1970
- Triumph Spitfire MKIV 1970-1974
- Triumph TR2 1953-1955
- Triumph TR3 1955-1957
- Triumph TR3A 1957-1962
- Triumph TR4 1961-1965
- Triumph TR4A 1965-1967
- Triumph TR5 1967-1968
- Triumph TR6 1969-1976
- Triumph TR7 1975-1981
- Triumph TR8 1978-1981
- TVR Griffith 1963-1967
- TVR Griffith 1991-2002
- TVR Vixen S1 1967-1968
- TVR Vixen S2 1967-1972
- TVR Vixen S3 1972-1979
- TVR Vixen S4 1972-1979
- TVR Tuscan 1967-1971
- TVR Tuscan MKII 1971-1972
- TVR Tuscan MKIII 1972-1977
- TVR Tuscan V6 1969-1971
- TVR Tuscan V8 1969-1971

Possible output for the Unipart Spark Plug GSP550:
- OEM part number: GSP550
- Equivalent: NGK BR8ES, Champion RN9YC, Denso W22ES-U

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.