Genuine Subaru Laser Platinum Spark Plug 22401AA570 NGK-PFR5B-11 (4pcs)

The genuine Subaru 22401AA570 (NGK PFR5B-11) is a high-grade factory standard laser platinum plug designed explicitly for legendary boxer engines. Co-developed by Fuji Heavy Industries Ltd. and NGK, this component features a highly durable platinum tip welded on the center electrode along with a platinum pad embedded onto the ground electrode. This advanced composition ensures a slow wear rate, highly stable electrical conduction, and up to twice the operational lifespan compared to regular copper options. Built with corrugated ribs to prevent spark flashover and a pure alumina ceramic insulator for excellent thermal dissipation, this part is vital to mitigating common issues such as engine misfires, rough acceleration, and dropping fuel economy.Technical Specifications:OEM Factory Part Number: 22401AA570 (Supersedes older variants)NGK Production Code: PFR5B-11 (Stock No. 2300)Electrode Material: Premium Laser PlatinumManufacturing Origin: Authentic Made in Japan

🚗 Verified Vehicle Compatibility & Fitment:
This original ignition component is primarily engineered for vintage and modern configurations of 2.5L and 2.0L naturally aspirated/turbocharged

Subaru Boxer Engines. It fits the following model platforms:
Subaru Forester (1996 – 2005 onwards, 2.5L / 2.0L variants)
Subaru Impreza / WRX (1993 – 2005, EJ20 / EJ25 engine lines)
Subaru Legacy / Liberty (1996 – 2004, 2.5L platforms)
Subaru Outback (1996 – 2004, 2.5L 4-Cylinder blocks)