For 97-01 Honda CRV Civic AC449 2H1121 36450P0D004 IAC Idle Air Control Valve

Idle Air Control Valve for Honda

This idle air control valve manages idle speed by regulating the air that bypasses the throttle plate, and it cross-references OEM part numbers 36450P0D004 and AC449.

Overview

This idle air control valve is a direct-fit replacement for a failed or clogged factory unit on older Honda models. The valve stabilizes idle speed whether the engine is cold or warm, preventing stalling and rough running. It suits DIY mechanics and shops servicing 1997 through 2001 Honda CRV and Civic vehicles.

Built For Performance

• Direct-fit replacement for the factory idle air control valve
• Cross-references OEM numbers 36450P0D004, AC449, and 2H1121
• Controls bypass air to hold steady idle speed
• Resists carbon buildup for consistent long-term operation
• Plug-in electrical connector matches the original harness

Fits These Machines

• for Honda CRV 1997-2001
• for Honda Civic 1997-2001

On-The-Job Use

• Replacing a valve that causes fluctuating or surging idle
• Fixing stalls that occur when the engine is cold
• Routine maintenance on high-mileage Honda engines
• Restoring smooth idle after a check engine light diagnosis

Specs At A Glance

Good To Know

Q: How do I know the idle air control valve needs replacing? A: Common signs include a surging or hunting idle, stalling at stops, and a check engine light. These symptoms often point to a sticking or carbon-fouled valve.

Q: Does this valve need any programming after install? A: No, it is a mechanical-electrical replacement that bolts on and plugs in. An idle relearn procedure may still be recommended on some models.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.