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Keep Your Z Car Firing on All Cylinders
This wire set is engineered to restore crisp, reliable spark delivery on aging 300ZX ignition systems. Silicone insulation and a magnetic suppression core help the engine run smoother while resisting the heat and vibration common under the hood of a performance oriented Z car.
Key Features
- Variable pitch resistor cable delivers uniform resistance and strong conductivity
- EPDM and silicone outer jacket resists heat, oil, and moisture intrusion
- Magnetic core suppresses EMI and RFI interference across the frequency spectrum
- Silicone sealed boots create a watertight connection at the spark plug
- Stainless steel terminals with up to 3 serrated crimps for maximum retention strength
- Locking C shaped spring clip ensures a secure, corrosion resistant terminal connection
Fitment Table
| Year Range | Make | Model |
|---|---|---|
| 1984-1989 | Nissan | 300ZX |
Specifications
| Detail | Value |
|---|---|
| Insulation Material | Silicone |
| Core Type | Magnetic, variable pitch |
| Terminal Type | Stainless steel, serrated crimp |
| Boot Seal | Silicone sealed, watertight |
| Noise Suppression | EMI/RFI resistant magnetic core |
What's Included
- Complete set of spark plug wires for all cylinders
- Pre installed boots on each wire end
About NGK
NGK is a global leader in ignition technology, supplying wire sets and spark plugs to major vehicle manufacturers as original equipment for decades. Its engineering standards for materials, resistance, and durability carry directly into the aftermarket parts sold under the NGK name.
FAQ
What is the NGK 9056?The NGK 9056 is a spark plug wire set engineered for the 1984-1989 Nissan 300ZX. It replaces the factory ignition cables with OE style resistor wires designed to maintain proper voltage delivery and reduce electrical interference.
Which 300ZX model years fit this wire set?This wire set fits 1984 through 1989 Nissan 300ZX models, including 2+2, Base, and Turbo trims with the original factory ignition system.
Why replace factory spark plug wires on a 300ZX?Aging wires develop cracked insulation and rising resistance, which can cause misfires, rough idle, and reduced power. A fresh wire set restores consistent voltage delivery to each cylinder.
What makes NGK wire sets resistant to interference?The variable pitch magnetic core produces the impedance needed to suppress interference throughout the frequency spectrum, protecting sensitive electronics from EMI and RFI noise.
Are the boots on this wire set waterproof?The spark plug boots are glued to the cable with a silicone sealer, creating a watertight seal that helps prevent moisture related misfires.
How do I know if my 300ZX wire set needs replacement?Common signs include rough idle, misfires, hesitation during acceleration, and visible cracking or fraying on the wire insulation.
Is professional installation required?Most owners can install this wire set with basic hand tools by replacing one wire at a time to avoid cylinder mix ups.
Install Instructions
- Confirm the vehicle is off and the engine has cooled
- Remove and replace one wire at a time to keep firing order correct
- Disconnect the old wire from the distributor cap and spark plug
- Route the new wire along the same path as the original
- Seat the boot fully onto the spark plug and distributor terminal
- Repeat for each cylinder, then verify all connections before starting the engine
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