- Dispatched in 1–2 business days
- Delivery from £4.99
- Free 14-day returns
- Fitment checked by reg or VIN




NGK 6664 Spark plug
Article Number: 6664
Product Specifications
Compatibility
OE Numbers
Delivery & returns
Spanner Size
20,8 mm
Thread Size
M14 x 1,25
Thread Length (mm)
19
Spark Plug
with gasket seat
Spark Plug
Unscrewable SAE connector
Spark Plug
Iridium Middle Electrode
Spark Plug
1 - Earthed Electrode
Spark Plug
Interference Suppression 5 kOhm
Fuel Type
CNG/LPG
Spark Position (mm)
1
Electrode Gap (mm)
0.7
ALFA ROMEO
ALFA ROMEO 164 (164_) 01.1987 - 10.1998
ALFA ROMEO GIULIETTA (116_) - ...
ALFA ROMEO SPIDER (105_) 03.1966 - 12.1977
ALFA ROMEO SPIDER (115_) 01.1971 - 12.1993
AUDI
AUDI 72 (613, 615) 08.1965 - 08.1968
AUDI 72 Variant (613, 615) 04.1966 - 08.1968
AUDI 80 (613) 09.1966 - 08.1968
BMW
BMW 501 07.1952 - 01.1959
BMW V8 Coupe (502) 09.1954 - 07.1966
FIAT
FIAT 850 (100_) 07.1964 - 10.1972
HONDA
HONDA ACCORD I (SJ, SY, SM) 05.1976 - 09.1983
MITSUBISHI
MITSUBISHI CORDIA (A21_A, AB, AC) 10.1982 - 07.1989
MITSUBISHI GALANT Mk II (A16_) 09.1980 - 05.1984
MITSUBISHI GALANT Mk III (E1_A) 10.1983 - 12.1990
MITSUBISHI SAPPORO Mk II (A16_A) 08.1980 - 09.1984
MITSUBISHI STARION (A18_A) 05.1982 - 06.1990
MITSUBISHI TREDIA (A21_) 09.1982 - 03.1988
NISSAN
NISSAN 280ZX,ZXT (HGS130) 07.1978 - 05.1984
NSU
NSU 1200 09.1969 - 11.1971
Returns & Refunds
Free 14-day returns
Return an unused part in its original packaging within 14 days of receiving your order. Once we receive your request, we'll send you further instructions, including a prepaid return label where applicable.
£10.94
Includes VAT · Price per item
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Questions about this part
How do I know it fits my car?
The Compatibility tab lists the cars this part fits. You can also leave your VIN or registration number at checkout and our team will verify the fitment for you. If you have already paid for your order and the part does not fit your vehicle, we will issue you an instant refund.
When will I get it?
Orders are dispatched in 1–2 business days, and the parcel is delivered within 3–5 working days after dispatch. You'll see the exact delivery date and price at checkout, and you can follow your order on the Order status page.
Can I return it?
Yes, returns are free within 14 days of receiving your order, as long as the part is unused and in its original packaging. Fill in the Return a part form and we'll send you further instructions, including a prepaid return label where applicable.
Can't find the part you need?
Our team will help you find the right part for your car. E-mail us at [email protected] with your VIN or registration number and the name of the part.
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