Spark Plug Leads

Why Upgrade to Quality Spark Leads?

Factory leads often struggle under high heat and heavy use. They can break down quickly, causing misfires, hesitation, or a drop in performance. Upgrading to premium spark leads ensures a stronger electrical connection, less resistance, and better combustion. This means smoother starts, a more stable idle, and improved throttle response. Our sets are designed for durability, with reinforced insulation and high-performance cores that keep delivering long after stock parts fail.

High-quality leads also help reduce radio frequency interference and crossfire, which protects sensitive electronic systems in modern vehicles. Your engine operates more efficiently and consistently by improving spark energy and ensuring each cylinder fires as it should.

Benefits of LS Spark Plug Leads

• Improved ignition performance for more efficient combustion
• Greater durability under heat and stress
• Reduced misfires and smoother running
• Easy installation designed to suit LS engines
• A cost-effective upgrade that supports long-term performance
• Consistent spark energy, even under load
• Protection against premature wear of ignition coils

LS Spark Plug Leads

Our LS spark plug leads are customised for Holden and Chevrolet LS engines. By using a 9mm core, they deliver strong spark energy while resisting wear from heat and vibration. These leads are the perfect companion for engine upgrades, camshaft packages, or high-compression builds that need reliable ignition. The larger diameter reduces resistance, allowing for maximum spark transfer to each cylinder.

Owners of LS1, LS2, and LS3 engines often find that a reliable set of leads is the first step in unlocking consistent performance. Whether your car is used as a daily driver, weekend cruiser, or track machine, our leads offer strength and consistency where it matters most.

Spark Leads Built for Performance

Australia Speed offers ignition components that are tested by enthusiasts who race and tune LS engines. Our spark plug leads are performance engine parts designed for consistent spark delivery even under load. We make sure each set is engineered to meet the expectations of drivers chasing real-world gains. By using materials designed to withstand extreme heat cycles, they stay reliable even in high-performance builds that push engines to their limits.

When combined with quality spark plugs, the improvement in throttle response and engine smoothness is noticeable. This is why many of our customers pair new leads with additional upgrades like camshaft kits or CNC-machined heads.

Installation and Support

Every set of leads is designed for direct fitment, making installation simple. The boots and terminals are made to lock securely in place, preventing arcing or accidental disconnections. Melbourne customers can book workshop fitting and dyno tuning services, while we ship nationwide for drivers across Australia. With expert advice and tested products, you can be confident that your ignition system is set up for success.

We also provide guidance on lead routing and plug selection to help maximise performance. Choosing the right setup can extend your ignition system's lifespan and improve your build's overall reliability.

Power You Can Trust

From street builds to track-ready projects, our spark plug leads offer strength, durability, and tested reliability. They have been developed to perform in Australian conditions where high heat, long drives, and demanding loads are common. Pair them with our other performance engine parts like camshaft kits, CNC heads, and exhaust upgrades to complete your build with the right parts.

When choosing Australia Speed, you buy from a family-owned, motorsport-driven team that tests everything we sell. That means you can trust our spark leads to deliver the consistency and power you need, backed by people who live and breathe performance cars.