Electrical

IAG Performance carries OEM replacement and high-performance engine electrical parts for your 2002–2023 Subaru WRX, STI, Legacy GT, Forester XT, and BRZ. Whether you're replacing worn factory components or upgrading your vehicle’s electrical system, we offer a wide selection of reliable parts to keep your Subaru running at its best. Our selection includes Alternators, Battery Mounts, Performance Batteries, Battery Chargers, Ignition System Components, Wiring Connectors, Electrical Harnesses, and more. IAG Performance carries trusted brands such as AEM, Antigravity, CTEK, GrimmSpeed, HKS, IAG Performance, Kartboy, Mishimoto, NGK, Subaru, and more to ensure dependable electrical performance and reliability.

Alternators & Mounts

Photo collage if IAG V2 alternator relocation kit.

Alternators & Mounts

Enhance your Subaru’s performance and engine bay layout with Alternators and Alternator Mounts from IAG Performance. Whether you're replacing a worn factory alternator or upgrading your setup for a performance build, we offer high-quality solutions designed specifically for Subaru engines. IAG Performance provides reliable alternator components and mounting solutions, including our popular IAG V Alternator Relocation Kit for Subaru, which helps improve engine bay clearance and accessory drive configuration for high-performance builds.

Batteries

Power your Subaru with Antigravity Batteries, known for their high-performance lithium battery technology and reliable starting power. Available at IAG Performance, these advanced automotive batteries provide lightweight construction, strong cranking power, and long-lasting energy storage. Antigravity batteries are a great upgrade for Subaru WRX, STI, BRZ, Legacy GT, and Forester XT owners looking to improve their vehicle’s electrical system performance while reducing weight.

Battery Accessories

Enhance your Subaru’s battery performance with high-quality battery accessories from Antigravity Batteries, CTEK, GrimmSpeed, and OCD. Available at IAG Performance, these accessories help ensure reliable starting power, proper battery mounting, and long-term electrical system performance. Our selection includes battery chargers, battery mounting kits, tie-downs, and other battery system components designed to keep your automotive battery secure, properly maintained, and operating at peak performance.

Ignition Systems

Photo collage of spark plugs and ignition coils.

Ignition Systems

IAG Performance carries OEM and aftermarket ignition system parts for your 2002–2023 Subaru WRX, STI, Legacy GT, Forester XT, and BRZ. A properly functioning ignition system is essential for reliable starting, smooth engine operation, and optimal performance. Our selection includes Ignition Coils, Spark Plugs, Plug Wires, and other ignition components designed to keep your Subaru running efficiently. We carry trusted brands including APR Performance, COBB, Cusco, GReddy, GrimmSpeed, Hella, IAG Performance, Kartboy, Perrin, Subaru, Versus Engineering, and more.

Wiring Connectors

IAG Performance carries OEM and aftermarket wiring connectors for your 2002–2023 Subaru WRX, STI, Legacy GT, Forester XT, and BRZ. Whether you're repairing damaged wiring, completing an engine build, or installing aftermarket components, we offer high-quality connectors designed for reliable electrical connections and proper fitment. Our selection includes electrical connectors, wiring pigtails, harness connectors, and other wiring components to help keep your Subaru’s electrical system operating properly. Here are just a few of the brands we carry: COBB, Cusco, GReddy, GrimmSpeed, Hella, IAG Performance, Kartboy, Perrin, Subaru, Versus Engineering, and more.

Wiring Harnesses

Shop aftermarket wiring harnesses for Subaru WRX, STI, BRZ, and other performance vehicles at IAG Performance. We carry high-quality harnesses from trusted brands like AEM, HKS, and TurboXS designed to support ECU upgrades, gauges, sensors, and other performance electronics while ensuring reliable electrical connections for street, track, and custom builds.