Aston Martin DB4 1958-1963
Aston Martin DB5 1963-1965
Aston Martin DB6 1965-1970
Aston Martin DBS 1967-1972
Aston Martin Vantage 1972-1973
Aston Martin V8 1972-1989
Austin-Healey 100 1953-1956
Austin-Healey 3000 1965-1972
Bentley S1 1955-1959
Bentley S2 1959-1962
Bentley S3 1962-1965
Bentley T1 1965-1977
Bentley T2 1977-1980
Bentley Turbo R 1985-1997
Bentley Continental 1991-2003
Bristol 405 1954-1958
Bristol 406 1958-1961
Bristol 407 1961-1963
Bristol 408 1963-1965
Bristol 409 1965-1967
Bristol 410 1967-1969
Bristol 411 1969-1976
Bristol 412 1976-1982
Bristol Beaufighter 1980-1987
Bristol Brigand 1982-1993
Bristol Britannia 1983-1993
Bristol Blenheim 1993-2011
Jaguar MK II 1959-1967
Jaguar E-Type 1961-1975
Jaguar XJ6 1968-1986
Jaguar XJ12 1972-1992
Jaguar XJS 1975-1996
Jaguar XJ6 Series III 1979-1992
Jaguar XJ12 Series III 1979-1992
Jaguar XJ40 1986-1994
Jaguar XJ-S 1986-1996
Lotus Elite 1957-1963
Lotus Elan 1962-1973
Lotus Elan Plus 2 1967-1975
Lotus Europa 1966-1975
Lotus Seven 1957-1973
Mercedes-Benz 300SL 1954-1963
Mercedes-Benz 190SL 1955-1963
Mercedes-Benz 220SE 1958-1965
Mercedes-Benz 230SL 1963-1967
Mercedes-Benz 250SL 1967-1968
Mercedes-Benz 280SL 1967-1971
Mercedes-Benz 280SE 1968-1971
MG MGA 1955-1962
MG MGB 1962-1980
MG MGC 1967-1969
MG Midget 1961-1979
Rolls-Royce Silver Cloud 1955-1966
Rolls-Royce Silver Shadow 1965-1976
Rolls-Royce Silver Wraith 1946-1959
Rolls-Royce Silver Spirit 1980-1997
Triumph TR3 1955-1962
Triumph TR4 1961-1965
Triumph TR4A 1965-1967
Triumph TR5 1967-1968
Triumph TR6 1969-1976
Triumph TR7 1975-1981
Triumph TR8 1978-1981
Triumph Spitfire 1962-1980
Triumph GT6 1966-1973
TVR Grantura 1958-1967
TVR Griffith 1963-1967
TVR Vixen 1967-1973
TVR Cerbera 1996-2006
TVR Chimaera 1992-2003
TVR Tuscan 1999-2006

NGK

- Product Name: NGK GR4IX / 97382 Iridium IX Spark Plug Replaces IW16
- Product Type: Spark Plug
- Part Number: GR4IX / 97382
- Replaces OEM Part Number(s): IW16
- Designed for: Performance Enthusiasts
- Benefits: Extreme Ignitability, Improved Throttle Response, Superior Anti-Fouling
- Tip Material: Iridium
- Tip Shape: Fine
- Durability: High
- Spark Stability: Consistently Stable
- Iridium Alloy: Yes
- Melting Point: Extremely High
- Trivalent Metal Plating: Yes
- Anti-Corrosion Properties: Superior
- Anti-Seizing Properties: Superior
- Acceleration: Outstanding
- Fuel Efficiency: High
- Durability: High
- Design: Ultimate
- Technology: High-Tech
- Performance: Superior
- Box Dimensions (mm): Height - 84, Width - 24, Length - 21
- Compatibility: Please use cross reference table or contact us for verification.
- OEM Part Number(s): See cross reference table
- Equivalent Part Number(s): See cross reference table

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.