NGK SILZKR8E8G Spark Plug – Laser Iridium, Heat Range 8 The NGK SILZKR8E8G is a long-reach, fine-wire iridium spark plug designed for clean, stable ignition under load. It uses an iridium centre electrode and a platinum ground pad for consistent spark and long life. The NGK heat range 8 is a colder grade than many OE plugs, helping control combustion temperatures in hard-driven or lightly tuned engines. It can improve throttle response, reduce misfire under boost, and keep performance stable on repeated pulls. Do not expect a power increase on its own, but do expect more reliable ignition and smoother running when matched to the engine’s needs. Always confirm fitment using the site’s vehicle lookup or the Vehicle Fitment tab. Key points Laser Iridium design for strong, consistent spark and durability Colder NGK heat range 8 for performance use where specified 12 mm thread, long 26.5 mm reach, 14 mm hex, tapered seat Pre-set 0.8 mm gap for OE-style install (check and adjust if your ECU/tune requires) Part Number SILZKR8E8G NGK Stock Number 94595 Part Category 686 – Spark Plug GTIN 87295945957 Thread Size M12 x 1.25 Reach 26.5 mm Hex Size 14 mm Seat Type Tapered Heat Range 8 (colder) Resistor Yes Centre Electrode Iridium fine wire Ground Electrode Platinum pad Factory Gap 0.8 mm Tip Projection Projected Terminal Type Solid Installation guidance – Fit to a cold engine. Use a torque wrench and follow the vehicle manufacturer’s torque spec. Do not use anti-seize on plated NGK threads. – Check gap only if your build or tune specifies it. Adjust carefully to avoid damaging the fine-wire tip. – For tuned use, shorter service intervals may be sensible. Regularly inspect and replace if fouled or worn. The price displayed is for a single plug, please add the desired amount to your basket. Additional Information Weight 0.05 kg Dimensions 10 × 3 × 3 cm Brand NGK
