Description
Product Overview
The NIULPFZTK spark plug wire set is designed specifically for Harley‑Davidson Big Twin Dyna and Softail motorcycles. Crafted from high‑quality copper core with a durable nickel outer layer, the wires provide excellent electrical conductivity and resistance to corrosion. Each package contains two lengths—5.71 inches for front‑engine applications and 17.72 inches for rear‑engine setups—both featuring a 10.4mm rubber end for a secure, vehicle‑specific fit. Weatherproof construction ensures reliable performance in rain, heat, and cold.
![[Product front view showing all components]](https://www.uolvora.store/wp-content/uploads/2026/06/fbccb0edb45844e8b8453c2f31d253fb.jpg)
Usage
These wires are ideal for riders seeking dependable ignition on Harley‑Davidson models from 1999 to 2017, including Super Glide, Wide Glide, Low Rider, Springer, Slim, Deluxe, and Deuce. Install the appropriate length to match your bike’s configuration and enjoy consistent spark generation even in extreme temperatures. Perfect for both daily commuting and weekend rides.
Why Choose Us
NIULPFZTK combines precision engineering with rigorous quality testing to deliver spark plug wires that exceed OEM standards. Our nickel coating resists oxidation, while the copper core ensures low resistance for optimal spark energy. Each wire undergoes a weatherproof seal test, guaranteeing longevity and performance on the road. Backed by responsive customer support and a hassle‑free return policy, we stand behind every product.
Key Features
- Nickel‑coated outer layer provides superior corrosion resistance.
- Copper core ensures stable, low‑resistance electrical flow.
- Weatherproof design maintains performance in rain, heat, and cold.
- Two lengths (5.71″ and 17.72″) fit a wide range of Harley‑Davidson models.
- Dedicated customer service team offers expert installation help and easy returns.
FAQ
Will these wires fit my 2015 Harley Softail?
Yes, the 5.71″ and 17.72″ lengths are compatible with Softail models from 1999‑2017, including the 2015 year.
What makes the nickel coating important?
The nickel coating protects the wire from rust and corrosion, extending its lifespan and maintaining consistent conductivity.
Can I install the wires myself?
Installation is straightforward with basic tools; the rubber ends snap securely onto the spark plugs and ignition coil.
Are these wires weatherproof?
Yes, they are designed to resist moisture and temperature extremes, ensuring reliable ignition in all conditions.
What is the warranty?
NIULPFZTK offers a one‑year limited warranty covering manufacturing defects and provides full support for any installation questions.





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