Arai

About Arai Performance Fuel and Ignition Parts

Arai is a performance-focused brand covering electronic fuel injection, ignition, and fuel delivery hardware for classic carbureted engines and modern LS-style builds. The product range, which includes Killshot throttle body kits, Wild Card sequential kits, Jackpot LS top end kits, and Black Jack ignition components, is aimed at hot rodders, restorers, and weekend racers who want modern drivability without abandoning a classic small block or big block.

Engine Control and EFI Kits

The heart of any EFI conversion is the ECU, and Arai's engine control module offerings are typically sold as part of complete master kits. Killshot-style 4-barrel throttle body systems are designed to bolt to a standard 4150-style flange, replacing a carburetor with injectors, sensors, and a self-learning controller that adapts to stock-to-mild builds while remaining fully tunable for more aggressive combinations. Handheld displays let you monitor and adjust settings without a laptop. Sequential port-injection Wild Card kits and Jackpot LS Lite kits extend the same plug-and-play approach to classic multiport and LS1/LS2/LS6 applications.

Fuel Delivery and Pressure Control

EFI demands steady, regulated fuel pressure, which is why a quality fuel injection system component matters as much as the controller. Arai's fuel pressure regulators are machined from billet aluminum with a black anodized finish, and some versions include a gauge so you can confirm pressure at a glance. When shopping, match the regulator and fuel kit to your injector size, target horsepower, and whether the engine is naturally aspirated or boosted.

Ignition: Distributors and Plug Wires

Precise timing control is only useful if the spark arrives intact. Arai's Black Jack Pro Series magnetic pickup distributors are built for SBC and BBC engines and can run with mechanical advance or be locked out so the ECU manages timing. Paired with spark plug wire sets that use 180-degree ceramic boots, they help keep high-energy spark away from hot headers and exhaust manifolds, a common failure point in tight engine bays.

Choosing the Right Arai Kit

• Confirm your engine family, flange type, and target horsepower before selecting a master or top end kit.
• Make sure your fuel pump, lines, and filter are rated for EFI pressure.
• Decide whether you want the ECU to control timing; this affects distributor and coil choice.
• Check wire length and boot angle for your specific engine and header setup.

Whether you are modernizing a small block Chevy or building a streetable LS swap, Arai offers a coordinated set of parts that work together as a system.