Size Chart
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Restore reliable combustion with an NGK spark plug configuration selected around the engine's required heat range, thread, reach, seat, electrode design, and gap. Confirm every application and specification for the exact part before ordering.
Key Features
Fitment
| Years | Make | Model | Application |
|---|---|---|---|
| 1979 | Honda | Accord | Confirm engine, required quantity, heat range, thread, reach, seat, and gap |
| 1979-1980 | Honda | Prelude | Confirm engine, required quantity, heat range, thread, reach, seat, and gap |
| 1959 | MG | MGA | Confirm engine, required quantity, heat range, thread, reach, seat, and gap |
| 1965-1967 | Porsche | 911 | Confirm engine, required quantity, heat range, thread, reach, seat, and gap |
| 1973 | Porsche | 911 | Confirm engine, required quantity, heat range, thread, reach, seat, and gap |
Specifications
| Brand | NGK |
|---|---|
| Manufacturer Part Number | 6664 |
| NGK Designation | BR7EIX |
| Product Type | Spark Plugs |
| Fitment Type | Vehicle Specific |
| Package Quantity | 4 |
| Condition | New |
| GTIN | 087295166642 |
What's Included
One new NGK spark plug listing in the package quantity shown above. Only components expressly identified for this exact manufacturer part number are included.
About NGK
NGK develops OE-style and performance ignition components, wire sets, coils, and vehicle sensors with application-specific electrical and mechanical specifications.
Related NGK Products
Frequently Asked Questions
Will NGK 6664 fit a 1979 Honda Accord?
That year, make, and model range appears in the exact application data. Confirm engine, required quantity, heat range, thread, reach, seat, and gap before ordering because trim and engine details are intentionally kept outside the YMM tag.
Should I check the gap on NGK 6664 before installation?
Yes. Verify the engine manufacturer's required gap before installation and use a suitable tool that will not damage a fine-wire electrode.
How many spark plugs are included with NGK 6664?
This listing includes 4 spark plugs. Confirm the engine's total required quantity before ordering.
Installation
Work on a cool engine with the battery isolated when required. Follow the vehicle and NGK procedures for part number 6664, compare the removed component before installation, use specified torque values, route wiring away from heat and moving parts, and verify normal operation before driving.
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