Rostra Precision Controls 60-0224 Engine Intake Manifold Heater Relay

The Rostra Precision Controls 60-0224 is a high-quality engine intake manifold heater relay designed to control the intake air heating system during cold weather starting conditions. This relay activates the intake manifold heater grid, which warms incoming air to ensure reliable engine starts in cold temperatures and reduce white smoke during startup.

Key Features:

• Direct replacement for OEM part number 13321749121
• Controls intake manifold heater operation for improved cold weather starting
• Reduces extended cranking times and hard-start conditions
• Helps minimize white smoke emissions during cold starts
• Precision-engineered for reliable performance and long service life

When the intake manifold heater relay fails, symptoms may include difficulty starting in cold weather, longer cranking times, increased white smoke during startup, and poor engine performance until warmed up. Replacing a faulty relay restores proper heater grid operation for quick, reliable cold-weather starts.