NGK Spark plug GR8DI-12 90908 Iridium
NGK Spark plug GR8DI-12 90908 Iridium
NGK Spark plug GR8DI-12 Iridium NGK iridium spark plugs currently represent the highest-quality technological solution. They feature an iridium-alloy on the middle electrode welded on in a special process using laser. One of the world’s hardest metals, the precious metal iridium starts melting at a temperature of 2450°C and is therefore very resistant to spark erosion. By using it, the service life is doubled on average in comparison to standard nickel spark plugs.
Disclaimer: We have taken every care is taken in putting together lists of suitable vehicle compatibilities and component cross references, they are given for general guidance only, and they do not constitute any contractual term, representation or warranty and as such the supplier (Diy Car Service Parts) do not accept any responsibility in respect of any claim whatsoever and howsoever caused arising from the publication of this listing. It remains the responsibility of you (the customer) to check the specification of this component and carefully compare to your original before ordering/installing.
Couldn't load pickup availability
Authenticity Guaranteed
Satisfaction Guarantee
Secure Payments
Model Compatibility
Model Compatibility
Abarth 1000 1966-1969
AC Ace 1953-1963
AC Cobra 1962-1967
Alfa Romeo 4C 2013-2020
Alfa Romeo Giulia 1962-1978
Alfa Romeo Giulietta 1954-1965
Alfa Romeo Spider 1966-1993
Alpine A110 1961-1977
Aston Martin DB4 1958-1963
Aston Martin DB5 1963-1965
Aston Martin DB6 1965-1970
Aston Martin DBS 1967-1972
Audi 100 1968-1982
Audi 80 1972-1996
Audi A1 2010-2020
Austin-Healey 100-6 1956-1959
Austin-Healey 3000 1959-1968
Bentley S1 1955-1959
Bentley S2 1959-1962
Bentley S3 1962-1965
BMW 1500 1962-1964
BMW 2002 1968-1976
BMW 3 Series 1975-2020
BMW 5 Series 1972-2020
BMW 7 Series 1977-2020
Bristol 411 1969-1976
Citroen 2CV 1948-1990
Citroen DS 1955-1975
Daimler Dart 1959-1964
Datsun 240Z 1970-1973
Ferrari 250 GTO 1962-1964
Ferrari 275 1964-1968
Ferrari 308 GTB 1975-1985
Fiat 124 Spider 1966-1985
Fiat 500 1957-1975
Ford Capri 1969-1987
Ford Cortina 1962-1982
Ford Escort 1968-2002
Ford Mustang 1964-1973
Hillman Imp 1963-1976
Jaguar E-Type 1961-1975
Jaguar Mk II 1959-1967
Jaguar XJ6 1968-1997
Lamborghini Countach 1974-1990
Lamborghini Miura 1966-1973
Lancia Fulvia 1963-1976
Lancia Stratos 1973-1978
Lotus Elan 1962-1973
Lotus Esprit 1976-2004
Maserati Ghibli 1966-1973
Maserati Quattroporte 1963-1974
Mazda MX-5 1989-2020
Mercedes-Benz 300 SL 1954-1963
Mercedes-Benz 600 1963-1981
MG MGB 1962-1980
MG Midget 1961-1980
Mini Cooper 1961-2000
Morris Marina 1971-1980
Porsche 911 1963-2020
Renault Alpine A310 1971-1985
Rolls-Royce Silver Shadow 1965-1980
Rover P5 1958-1973
Saab 96 1960-1980
Skoda Octavia 1964-1996
Triumph Spitfire 1962-1980
Triumph TR6 1969-1976
Vauxhall Viva 1963-1979
Volkswagen Beetle 1945-2003
Volkswagen Golf 1974-2020
Volkswagen Karmann Ghia 1955-1974
Volvo P1800 1961-1973
Part Number
Part Number
1. Product Name: NGK Spark plug GR8DI-12 90908 Iridium
2. Material: Iridium alloy on middle electrode
3. Manufacturing Process: Laser welding
4. Iridium Melting Temperature: 2450°C
5. Resistance to Spark Erosion: Very high
6. Average Service Life: Doubled in comparison to standard nickel spark plugs
7. Diameter: M14
8. Spanner Size: 14 Bi-Hex
9. Electrode Configuration: Earthed (1 electrode)
10. Thread Size: 19
11. Disclaimer: General guidance only, not a contractual term, representation or warranty.
12. Supplier: Diy Car Service Parts
13. Responsibility: The supplier (Diy Car Service Parts) does not accept any responsibility for claims arising from the publication of this listing.
14. Customer Responsibility: It is the customer's responsibility to check the specification of the component and compare it to the original before ordering/installing.
15. OEM Part Number: Not specified
16. Equivalent Part Number: Not specified
Shipping Information
Shipping Information
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.
Returns Policy
Returns Policy
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.