Airtex 1R1452 Multi-Purpose Relay 40 Amp 12V 4-Terminal (Cross RY349)

The Airtex 1R1452 is a multi-purpose 12-volt automotive relay designed to deliver OE-quality fit and reliable electrical switching performance. Cross-referencing Standard Motor Products RY349, this relay is rated at 40 amps and features a 4-terminal blade connector configuration, making it a direct plug-in replacement for a wide range of factory relay positions.

This relay is engineered to control high-current circuits throughout the vehicle's electrical system, providing clean, consistent switching action to protect downstream components from voltage spikes and overload conditions. A failed or intermittent relay can cause the controlled component to stop functioning entirely or operate erratically; replacing it with this OE-spec unit restores proper system operation.

Key Features:

• 40-amp, 12-volt DC design matches original equipment specifications
• 4-terminal blade connector for direct, no-modification installation
• Suitable for multi-purpose applications including headlight, cooling fan, horn, starter, HVAC blower motor, fuel injection, power window, ignition, fog light, daytime running light, and accessory power circuits
• Manufactured to ISO/TS 16949:2002 and ISO 14001 quality standards
• Cross-references Standard Motor Products RY349
• Sold individually

Airtex relays are built to meet or exceed original equipment performance standards, providing a cost-effective solution for restoring proper electrical system function.