NGK 7189 spark plug for the 1967 Dodge Charger V8 5.2L, the 1967-1969 Charger V8 7.2L, the 1967-1971 Charger V8 6.3L, the 1972-1976 Charger V8 6.6L and other vehicles ignites the air-fuel mixture in the cylinder. As one of the NGK spark plugs aimed at the performance enthusiast, the Iridium IX has a fine-wire iridium tip.
- NGK Iridium IX line with a single iridium tip
- Fine wire 0.6 millimeter iridium tip center electrode for durability and a stable spark
- Tapered cut ground electrode with a reduced quenching design for ignitability, acceleration and throttle response
- Solid copper core, 98% pure copper, for heat dissipation and conductivity
- Trivalent metal plating for anti-corrosion and anti-seizing properties, which eases installation and removal
- Recommended for modified or high performance applications
Quick facts
- Part: NGK 7189 spark plug
- Fits: the 1967 Dodge Charger V8 5.2L, the 1967-1969 Charger V8 7.2L, the 1967-1971 Charger V8 6.3L, the 1972-1976 Charger V8 6.6L and other vehicles
- Condition: New
A misfire, hard starting, a rough idle or poorer fuel economy can mean worn plugs. Before you replace them, rule out the ignition coils or wires, the fuel delivery and any vacuum leak, since each of those can also make an engine run rough.
Fits
Besides the cars named in the first line, it fits the 1959-1967 Chevrolet Impala V8 4.6L and the 1966 Chrysler Town & Country V8 7.2L. A V8 takes eight of these plugs.
Specifications
Fit and size
- Quantity per vehicle: 8 on V8 engines, 6 on 6-cylinder engines
- Thread size: M14 - 1.25
- Hex size: 13/16"
Build and materials
- Center electrode: single iridium, 0.6 mm fine wire
- Ground electrode: taper cut
- Core: solid copper
- Plating: trivalent metal
- NGK part number: XR4IX
- Condition: New
Interchange: AP86 · 4236 · W10FC · WR9FP · XR4IX
This part cross-references / interchanges with the following part numbers:
AP86, 4236, W10FC, WR9FP, 7189, XR4IX
Frequently Asked Questions
Is this the right Dodge Charger spark plug for a 1967-1971 Dodge Charger V8 6.3L?
Yes. NGK 7189 fits the 1967-1971 Dodge Charger V8 6.3L, which takes eight plugs. If your car is not named here, look it up in the "Vehicles it fits" section.
Will this NGK 7189 work as a Chevy Impala spark plug on a 1959-1967 Impala V8 4.6L?
Yes. NGK 7189 is listed for the 1959-1967 Chevrolet Impala V8 4.6L, and a V8 takes eight plugs.
What thread and hex size does the NGK 7189 plug have?
The NGK 7189 has an M14 - 1.25 thread and a 13/16" hex.
What engines is the NGK Iridium IX spark plug recommended for?
Modified or high performance applications, or as an upgrade to OE nickel alloy spark plugs. Its fine wire iridium tip is 0.6 millimeter.
What signs can mean NGK iridium spark plugs are wearing out?
A misfire, hard starting or a rough idle can point to worn plugs, though other ignition or fuel problems can show the same signs. A shop can test the ignition system if you are unsure.
