NGK Spark Plug P/N:90656
NGK 4764 spark plug for the 1986-1991 Mazda RX-7 1.3L fires the spark that lights the air-fuel mixture in the rotary engine. It is one of the NGK spark plugs made specifically for rotary engines.
Hard starting, a rough idle or a misfire can mean the plugs are worn. A weak ignition coil or a dirty fuel injector can also sit behind those symptoms, so pin down the cause before you buy new plugs.
It fits the 1986-1991 and the 1993-1995 Mazda RX-7 1.3L, and the 1.3L takes two plugs.
Fit and size
Build and materials
Interchange: 0000-18-N3A2 · B6S8-18-10XA · N3A2-18-110
1765255 · BUR7EQP
This part cross-references / interchanges with the following part numbers:
Are these RX-7 spark plugs right for the 1986-1991 Mazda RX-7 1.3L?
Yes. The NGK 4764 fits the 1986-1991 Mazda RX-7 1.3L, and that engine takes two plugs.
What thread size does the NGK 4764 spark plug have?
The NGK 4764 has an M14 - 1.25 thread. Its center electrode is single platinum alloy.
Is this Laser Platinum plug a rotary-engine design?
Yes. This plug has a recessed center electrode and a surface discharge design made specifically for rotary engines.
What signs can show these Laser Platinum plugs are worn?
Trouble starting, an uneven idle or a misfire can be signs of a worn plug. A shop can test the ignition system if you are unsure.
Does the NGK 4764 replace the BUR7EQP plug?
Yes. BUR7EQP is NGK's other number for this plug, and the 4764 also replaces 0000-18-N3A2 and N3A2-18-110.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.