P43 Premium Iridium Spark Plugs from BRISK

P43 Premium Iridium spark plugs have high ability for ignition of air-fuel mixture in combustion chamber. Small diameter of center electrode tip made from iridium alloy and ground electrode from yttrium alloy with copper core, centered through cutting of centre electrode decreases demand on voltage supplied by ignition system. Iridium alloy has high value of melting point with high resistance to erosion. The shape of ground electrode does not impede flame front propagation in combustion chamber. Good access of mixture to electrodes increases functional properties of spark plugs, power and vehicle's acceleration.

P43 Premium Iridium Key Benefits and Applications :-

• Iridium is 6x / 8x Stronger /1200 Degrees Higher Melting Point than Platinum
• Power Focus - Spark Exactly in the Focal Point of the Reflector
• Lower Required Supplied Ignition Voltage
• Optimized Diameter Center and Cut Back Ground Electrode
• Less Quenching, Better A/F Mixture Access = More Power
• Ability to Ignite Lean Mixtures and Difficult to Ignite Fuels
• High Pressure, High Output Race Engines
• Turbo / Supercharged / Nitrous
• Good Resistance to Fouling and Easier Starts

PERFORMANCE FEATURES OF BRISK IRIDIUM RACING SPARK PLUG

Iridium is extremely durable material that extends the spark plug lifetime by reducing gap erosion. (Iridium/Yttrium series utilize Yttrium enriched ground electrode for increased durability – available in only some shell dimensions)

BRISK RACING IRIDIUM spark plug "Power Focus" – spark is exactly in the focal point of the reflector that helps direct air fuel mixture during the compression stroke to the center electrode and consequently, after ignition, the propagating flame front toward the center of the combustion chamber.

BRISK RACING IRIDIUM spark plug Lower Required Supplied Ignition Voltage – is achieved by utilization of optimized diameter spark plug center electrode, along with sharp edges of the cut back ground electrode. This spark plug feature is beneficial in applications where the stock ignition system is pushed to the limit in modified power applications and customer does not want to upgrade ignition system. Brisk Iridium Racing spark plug Lower Required Supplied Ignition Voltage is also beneficial for easier cold starts and operation under partially fouled spark plug condition caused by A/F management problems or oil consumption.

Optimized 1mm diameter Brisk Racing Iridium spark plug iridium center electrode is capable to displace more heat than smaller diameter tips. Brisk Racing Iridium spark plug Cut back ground electrode accumulates less heat, displaces heat more rapidly, and allows for better access of A/F mixture to the spark and easier (less restricted) spread of the flame front immediately after the ignition.

⚡ Upgrade to Colder Heat Range for Tuned Engines

Running Stage 1, Stage 2, or Stage 3 tune on your Turbo GDI engine?

The P43 is the OEM heat range - perfect for stock applications. However, if your vehicle is tuned for higher boost and power, you need a colder heat range spark plug to handle the increased cylinder temperatures and prevent pre-ignition.

👉 Upgrade to BRISK Silver QR08S - 1 Step Colder than P43

• Colder heat range (08 vs standard) - Dissipates heat faster for tuned engines
• Silver electrode - Superior thermal conductivity prevents overheating
• Handles higher boost pressure - Engineered for Stage 1/2/3 tuned TGDI engines
• Prevents fouling and pre-ignition - Critical for modified performance applications

When to choose QR08S over P43:

• ✅ Stage 1, 2, or 3 ECU tune installed
• ✅ Running higher boost pressure than stock
• ✅ Track use or spirited driving
• ✅ High octane or race fuel usage

→ Shop BRISK Silver QR08S Colder Spark Plugs

PS : 1 Set contains 4 pcs P43 Spark Plugs