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  • Champion N9YC Copper Plus Spark Plug – fits MG Midget, Triumph Spitfire & Morris Minor – Part N9YC
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Champion N9YC Copper Plus Spark Plug – fits MG Midget, Triumph Spitfire & Morris Minor – Part N9YC
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Champion N9YC Copper Plus Spark Plug – fits MG Midget, Triumph Spitfire & Morris Minor – Part N9YC

CGO9748
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Champion N9YC Copper Plus Spark Plug – fits MG Midget, Triumph Spitfire & Morris Minor – Part N9YC
Description

The Champion N9YC Copper Plus spark plug delivers dependable ignition performance and corrosion resistance with its copper-core centre electrode and patented UltraSeal coated shell. Ideal for vintage vehicles and classic British models, it's built to withstand long service intervals and demanding conditions.

Designed for engines requiring a gasket seat, M14×1.25 thread, 19 mm reach, and a .74 mm gap, this spark plug suits classic applications. The copper core ensures fast heat transfer and strong spark, while the UltraSeal coating resists corrosion—perfect for Kiwi enthusiasts maintaining older MGs, Triumphs, or Morris Minors.

Features and Benefits:

  • Copper-core centre electrode for enhanced conductivity and longevity

  • UltraSeal coated shell for top-notch corrosion resistance

  • Nickel GE quality grade – reliable and consistent performance

  • Patent-pending SAC-9 resistor for reduced radio interference

  • Meets precise specs—.74 mm gap, M14×1.25 thread, 19 mm reach—for accurate fitment

Technical Specifications:

Specification Detail
Part Number N9YC
Brand Champion
Type Copper Plus Spark Plug
Seat Type Gasket
Thread M14 × 1.25
Reach 19 mm
Hex Size 20.8 mm
Resistor No
Gap 0.74 mm
Grade Nickel GE
Spark Position 3
Torque (tightening from) 25 Nm
Torque (tightening to) 30 Nm
Packaging Dimensions (cm) 8.65 × 2.45 × 2.45
Warranty Service Interval
Weight —

 

Vehicle Compatibility:

Make Model Years Application
MG Midget MkI–MkIV Classic small sports cars
Triumph Spitfire Mk3–MkIV (1967–76) Roadster ignition fitment
Morris Minor Series II–V 1952–72 Classic compact engine use

 

What’s Included:

  • 1 × Champion Copper Plus spark plug N9YC

  • Individually boxed with specification details

REVIEWS

TC

Ideal for my Triumph Spitfire rebuild. Great spark and it fits perfectly. No corrosion after a few drives—quality plug.

Tim C.

Auckland, NZ‑A

★★★★★
MB

Just right for my Morris Minor. Easy to gap and slot in. Engine runs smooth and steady. Very happy with this plug.

Margaret B.

Wellington, NZ‑W

★★★★★
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