STANDARD AC551 Idle Air Control Valve 707390980515 RX-7 1.3L-R2

( Brand: Standard ), ( Manufacturer Warranty: 1 Year ), ( Manufacturer Part Number: AC551 ), ( Type: Idle Air Control Valve ), ( UPC: 707390980515 )

Review STANDARD Idle Air Control Valve Mazda Rx-7 1.3l-r2 fits 1986–1988

The Mazda RX-7 1.3L-R2 Idle Air Control Valve, part number AC551, is a crucial component of the engine's fuel delivery and idling system. This specific valve was used in Mazda RX-7 models manufactured between 1986 and 1988.

The Idle Air Control Valve (IACV) regulates the amount of air entering the engine during idling, ensuring a consistent engine speed and stable idle. It is an essential component in maintaining proper engine performance and fuel efficiency.

The AC551 Idle Air Control Valve is a mechanically-controlled, diaphragm-actuated component. Its housing is typically made of aluminum alloy, which provides both durability and lightweight construction. The valve features a rubber diaphragm that moves in response to engine vacuum, controlling the amount of air that flows into the engine through the throttle body.

The valve's stem incorporates a spring that applies pressure on the diaphragm when the engine is idling. This spring tension determines the idle speed of the engine. When the engine needs more air due to increased load or cooler temperatures, the vacuum decreases, allowing the diaphragm to move and increase the airflow, resulting in a higher engine speed.

The AC551 Idle Air Control Valve is designed to provide reliable and consistent performance. However, it may wear out or malfunction over time, leading to problems such as rough idling, stalling, or poor fuel efficiency. When this occurs, it is essential to replace the valve with a new one to restore proper engine operation.

Installing the new AC551 Idle Air Control Valve is typically a straightforward process. It involves removing the old valve, cleaning the area, and installing the new one. However, it is always recommended to follow the manufacturer's instructions or consult a professional technician to ensure proper installation and prevent any potential damage to the engine.

In summary, the Mazda RX-7 1.3L-R2 AC551 Idle Air Control Valve is a vital part of the engine's fuel delivery and idling system. Its primary function is to regulate the amount of air entering the engine during idling, ensuring consistent engine speed, and stable idle. The valve's durable design, coupled with its essential role in engine performance, makes it a worthwhile investment for any Mazda RX-7 owner.

Buying a standard AC551 idle air control valve for Mazda RX-7 models between 1986 and 1988, 1.3L-R2 engine, involves weighing the potential benefits against the possible drawbacks. Here's a discussion of the pros and cons.

1. Improved Idle Stability: A faulty idle air control valve can cause unstable idling, which leads to poor engine performance and increased fuel consumption. Replacing the valve with a new one can help restore stable idling, improving overall engine performance and fuel efficiency.

2. Smoother Engine Operation: A new idle air control valve can make the engine run more smoothly, reducing vibrations and roughness, especially during idle and low-speed driving.

3. Reduced Emissions: A malfunctioning idle air control valve can cause increased emissions, as the engine may be running richer than it should be. Replacing the valve can help reduce emissions and improve the vehicle's overall environmental friendliness.

1. Cost: A new AC551 idle air control valve can be an expensive replacement, especially when considering labor costs for installation. The price may vary depending on the supplier and market conditions.

2. Time Investment: Installing a new idle air control valve can require a significant amount of time, especially for those who are not mechanically inclined and choose to have the work done by a professional mechanic.

3. Availability: Finding a new AC551 idle air control valve for older Mazda RX-7 models may not be an easy task. Some auto parts stores may not stock them, and online retailers may charge high prices or have long shipping times.

Deciding to buy a new standard AC551 idle air control valve for your 1986-1988 Mazda RX-7, 1.3L-R2 engine, involves balancing the potential benefits of improved engine performance, smoother operation, and reduced emissions against the costs and time investment. If you prioritize these improvements and have the budget and time to spare, a new idle air control valve could be a worthwhile investment. However, if the cost and time are significant concerns, consider exploring alternative options, such as rebuilding the existing valve or searching for a used, reconditioned part.

part # ac551 prices

• $1258.26-$1622.69

specifications injectiopug:

• for makes: Mazda
• for years: 1986-1988
• brand: Standard
• manufacturer warranty: 1 Year
• manufacturer part number: AC551
• type: Idle Air Control Valve
• upc: 707390980515

payments injectiopug:

• credit card: Visa
• other
• wallet: Apple-pay

general injectiopug:

• Air Fuel Delivery > Fuel Injection Parts > Additional Fuel Injection Parts
• condition: New

offer injectiopug:

• sold: 0
• quantity: 1
• started: August 22, 2025
• availability: In Stock
• options: Ship-to-home

returns injectiopug:

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

shipping injectiopug:

• cost: $0.00
• class: Standard
• type: Fixed
• service: Standard
• transit: 4-11 Days

seller injectiopug:

• # reviews: 6042
• rating: 100.0%

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