VALUEGRADE 21738Z Fuel Injection Idle Air Control Valve Iac

( Brand: Valuegrade ), ( Part Type: Fuel Control Valve ), ( Manufacturer Part Number: 21738Z )

Review VALUEGRADE Fuel Injection Idle Air Control Valve Iac

The Value Grade 21738Z Fuel Injection Idle Air Control Valve (IAC) is a crucial component in ensuring optimal engine performance, particularly during idle conditions. This IAC valve is engineered and manufactured by a reputable automotive parts supplier, delivering reliable and efficient operation.

The 21738Z IAC valve is designed for use in gasoline direct injection (GDI) engines, where precise control of air intake is essential for stable idling, improved fuel economy, and reduced exhaust emissions. The valve features a robust and durable construction, with a zinc alloy housing that resists corrosion and wear.

The IAC valve operates by controlling the amount of air that enters the engine intake system during idle conditions. This is achieved through a diaphragm mechanism that responds to engine RPM and manifold pressure signals, adjusting the valve opening accordingly to maintain stable idling. The valve also features a built-in vacuum actuator that allows for electronic control of the valve position, ensuring precise and responsive adjustments.

The 21738Z IAC valve is designed to meet or exceed original equipment manufacturer (OEM) specifications, ensuring reliable and efficient operation for an extended period. The valve also undergoes rigorous testing and quality assurance procedures to ensure that it meets the highest industry standards for performance and durability.

Installing the 21738Z IAC valve is a straightforward process, with no major modifications required. The valve is compatible with a wide range of applications, making it a versatile and cost-effective solution for maintaining engine performance in various vehicles.

In summary, the Value Grade 21738Z Fuel Injection Idle Air Control Valve is an essential component for maintaining optimal engine performance and efficiency, particularly during idle conditions. With its robust and durable construction, precise control mechanism, and compatibility with a wide range of applications, this IAC valve is an excellent choice for both professional technicians and DIY enthusiasts looking to keep their vehicles running at their best.

The Valuegrade 21738Z Fuel Injection Idle Air Control Valve (IAC) is a crucial component in the fuel injection system that helps maintain a consistent engine idle. Here are some pros and cons of buying this particular IAC:

1. OEM Quality: The Valuegrade 21738Z IAC is an original equipment manufacturer (OEM) replacement part, meaning it is designed to be an exact fit and function identical to the original part.

2. Improved Idle Stability: A faulty IAC can cause engine idle instability, rough idling, or even stalling. Replacing the faulty IAC with a new one can result in improved idle stability and smoother engine performance.

3. Cost-Effective: Compared to other aftermarket brands, the Valuegrade 21738Z IAC is relatively affordable.

1. Limited Compatibility: The Valuegrade 21738Z IAC is specifically designed for certain engine models and years. Before making a purchase, it is essential to ensure that this IAC is compatible with your vehicle.

2. Potential for Delayed Shipping: As with any aftermarket part, there is a possibility of delayed shipping. It is recommended to check the seller's shipping policy and estimated delivery time before placing an order.

3. Installation Complexity: Installing an IAC can be a complex process, especially for those without mechanical experience. It may be necessary to seek professional assistance to ensure proper installation.

In conclusion, the Valuegrade 21738Z Fuel Injection Idle Air Control Valve is an OEM replacement part that offers improved idle stability and cost-effectiveness. However, it has limited compatibility, and installation can be complex. Before making a purchase, it is essential to ensure that this IAC is compatible with your vehicle and consider seeking professional assistance for installation.

Recommendation: If you are confident in your mechanical abilities and have determined that the Valuegrade 21738Z IAC is compatible with your vehicle, it can be a cost-effective solution to improve engine idle stability. However, if you are unsure about compatibility or installation, it may be best to consult a professional mechanic for advice.

part # 21738z price

• $13.45

specifications injectiopug:

• brand: Valuegrade
• part type: Fuel Control Valve
• manufacturer part number: 21738Z

shipping injectiopug:

• service: USPS Priority Mail
• class: Expedited
• carrier: USPS
• type: Fixed
• cost: $0.00
• transit: 3-8 Days

offer injectiopug:

• started: March 16, 2026
• sold: 0
• options: Ship-to-home
• quantity: 24
• availability: In Stock

seller injectiopug:

• rating: 99.7%
• # reviews: 274576

general injectiopug:

• Air Fuel Delivery > Fuel Injection Parts > Additional Fuel Injection Parts
• condition: New other see details

returns injectiopug:

• time: 30 Days
• policy: Returns Accepted
• paid by: Seller

payments injectiopug:

• wallet: Apple-pay
• other
• credit card: Diners-club

Valuegrade 21738Z Is Similar To:

• Valuegrade 31023z Fuel Injection Idle Air Control Valve Iac (93.2% similar) $13.46. (January 18th, 2026)