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Standard Ignition AC278 Idle Air Control Valve
| Brand | Standard Ignition AC278 |
|---|---|
| Connector Shape | Square |
| Gaskets Included | Yes |
| Hardware Included | Yes |
| Fits | INFINITI and Nissan · 11 vehicles |
Direct replacement. Idle air control valve with square connector and blade terminals.
Installation ready. Gaskets and hardware are included for a smoother install.
Precise airflow control. Helps regulate idle air for steady engine operation.
Cross-references Eastern Catalytic 50531, Hitachi Automotive ABV0039 and Standard Ignition AC278 for the same application. See all 15.
Idle Air Control Valve for Nissan and INFINITI
Standard Ignition AC278 is an idle air control valve for select Nissan and INFINITI applications. It is built with a square connector shape, 6 blade terminals, two hose connectors, and includes gaskets and hardware for service replacement work.
Key Features
- Idle Air Control Valve for fuel injection system service
- Square connector shape with 6 blade terminals
- Two hose connectors for the specified application
- Gaskets included for installation sealing
- Hardware included for replacement service
- Standard Ignition AC278 cross-references Hitachi Automotive ABV0039 and Walker Products 215-2064 for the same application
Application Details
Standard Ignition AC278 is used to regulate bypass air at idle so the engine can maintain a stable idle speed under changing load conditions. It is a direct-fit idle air control valve for 1999-2001 Nissan Maxima, 2000-2001 INFINITI I30, and 2002 INFINITI I35 applications. For buyers searching for a Nissan Maxima idle air control valve or an INFINITI I30 idle air control valve, AC278 matches the listed OE-style fitment and connector configuration.
Common Issues It May Address
- Rough or unstable idle speed
- Engine stalling when coming to a stop
- Idle speed that is too high or too low
- Idle fluctuation during accessory load changes
- Throttle response concerns related to idle air control
Installation Notes
Verify connector shape, terminal count, and hose connection layout before installation. Clean the throttle body and related air passages during service, and replace the included gaskets to help maintain a proper seal. Confirm vehicle fitment by year, make, and model before ordering, especially for 1999-2001 Nissan Maxima, 2000-2001 INFINITI I30, and 2002 INFINITI I35 applications.
Quality Assurance
Standard Ignition supplies replacement engine management components for fuel delivery and idle control service. AC278 is built to match the listed application requirements and connector specifications for direct replacement use.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2002 | INFINITI | I35 | 3.5L | V6 | N/A | Compatible with various car models. |
| 2001 | INFINITI | I30 | — | — | N/A | Primary application for specific vehicle models ~ Idle Air Control Valve |
| 2001 | INFINITI | I30 | 3.0L | V6 | N/A | Compatible with various car models. |
| 2001 | Nissan | Maxima | 3.0L | V6 | N/A | Primary application for specific vehicle models ~ Idle Air Control Valve |
| 2001 | Nissan | Maxima | 3.0L | V6 | N/A | Compatible with various car models. |
| 2000 | INFINITI | I30 | — | — | N/A | Primary application for specific vehicle models ~ Idle Air Control Valve |
| 2000 | INFINITI | I30 | 3.0L | V6 | N/A | Compatible with various car models. |
| 2000 | Nissan | Maxima | 3.0L | V6 | N/A | Primary application for specific vehicle models ~ Idle Air Control Valve |
| 2000 | Nissan | Maxima | 3.0L | V6 | N/A | Compatible with various car models. |
| 1999 | Nissan | Maxima | 3.0L | V6 | N/A | Primary application for specific vehicle models ~ Idle Air Control Valve |
| 1999 | Nissan | Maxima | 3.0L | V6 | N/A | Compatible with various car models. |
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