Idle Air Control Valve IAC 803149 3843750 3843751 3857696 for MerCruiser Volvo Penta 4.3L-7.4L MPI
Idle Air Control Valve IAC 803149 3843750 3843751 3857696 for MerCruiser Volvo Penta 4.3L-7.4L MPI
Product Overview
Idle air control valve (IAC / IACV) — a direct replacement part for Mercury MerCruiser and Volvo Penta petrol sterndrives that fits GM MPI marine engines from 4.3 L to 7.4 L. It replaces MerCruiser 803149 and Volvo Penta 3843750, 3843751 and 3857696. Applications include MerCruiser sterndrive and inboard engines and Volvo Penta 4.3, 5.0 and 5.7 litre petrol sterndrives, plus the 6.2 L MX and 7.4 L MPI big-block. The valve meters bypass air around the throttle plate so the ECM can hold a stable idle.
A tired IAC is one of the most common causes of a rough or hunting idle on these engines. Typical symptoms:
- Rough or erratic idle
- Idle speed that fluctuates up and down
- Engine stalls when coming down from full throttle
- Hard starting
- High rpm on start-up
Specifications & Attributes
| Specification | Detail |
|---|---|
| Condition | New / New with tags |
| Type | Idle Air Control Valve (IAC / IACV) |
| Engine Type | GM marine petrol MPI, 4.3 L to 7.4 L V6 / V8 |
| Fits | MerCruiser sterndrive and inboard, Volvo Penta petrol sterndrive |
| Fuel System | Multi-port fuel injection (MPI) |
| Reference OE | 803149 (MerCruiser), 3843750 / 3843751 / 3857696 (Volvo Penta) |
| UPC | Does not apply |
OEM Cross Reference
| Brand | OEM Part Numbers |
|---|---|
| MerCruiser | 803149 |
| Volvo Penta | 3843750, 3843751, 3857696 |
| GM Marine | Replaces the OEM idle air control valve fitted to GM 4.3 L to 7.4 L MPI marine engines |
Compatible Engines
Fits the following MerCruiser models:
| Model | Notes |
|---|---|
| 350 MAG MPI (MCM / MIE) | 5.7 L V8 MPI |
| MX 6.2L MPI | 6.2 L V8 MPI |
| 7.4L MPI (L29) | 7.4 L V8 MPI big block |
| Black Scorpion Ski | 5.7 L V8 MPI inboard |
| 377 Scorpion MCM & Ski | 6.2 L V8 MPI inboard |
| 575 SCi | 8.2 L V8 supercharged |
Fits the following Volvo Penta petrol sterndrive models, by engine family:
| Displacement | Models |
|---|---|
| 3.0 L / V6 base | 3GXi-P, 4.3GXi-Q, 4.3GXi-225-R, 4.3Gi-200-R, V6-200-A, V6-225-A |
| 4.3 L V6 | 4.3GXi-B, 4.3GXi-BF, 4.3OSi-B, 4.3OSi-BF, 4.3GXi-C, 4.3GXi-CF, 4.3GXi-D, 4.3GXi-DF, 4.3OSi-C, 4.3OSi-CF, 4.3OSi-D, 4.3OSi-DF, 4.3GXi-E, 4.3GXi-EF, 4.3OSi-E, 4.3OSi-EF, 4.3GXi-F, 4.3GXi-FF, 4.3OSi-F, 4.3OSi-FF, 4.3GXi-G, 4.3GXi-GF, 4.3OSi-G, 4.3OSi-GF, 4.3GXi-J, 4.3GXi-JF, 4.3OSi-J, 4.3OSi-JF |
| 5.0 L V8 | 5.0GXi-B, 5.0GXi-BF, 5.0OSi-B, 5.0OSi-BF, 5.0GXi-C, 5.0GXi-CF, 5.0GXi-D, 5.0GXi-DF, 5.0OSi-C, 5.0OSi-CF, 5.0OSi-D, 5.0OSi-DF, 5.0GXi-E, 5.0GXi-EF, 5.0OSi-E, 5.0OSi-EF, 5.0GXi-F, 5.0GXi-FF, 5.0OSi-F, 5.0OSi-FF, 5.0GXi-G, 5.0GXi-GF, 5.0OSi-G, 5.0OSi-GF, 5.0OSI-GF, 5.0GXi-J, 5.0GXi-JF, 5.0OSi-J, 5.0OSi-JF, 5.0GXi-N |
| 5.7 L V8 | 5.7Gi-B, 5.7Gi-BF, 5.7GXi-C, 5.7GXi-CF, 5.7GiI-B, 5.7GXiI-C, 5.7OSi-A, 5.7OSi-AF, 5.7OSXi-A, 5.7OSXi-AF, 5.7Gi-C, 5.7Gi-CF, 5.7Gi-D, 5.7Gi-DF, 5.7GiI-C, 5.7GiI-D, 5.7GXi-D, 5.7GXi-DF, 5.7GXi-E, 5.7GXi-EF, 5.7GXiI-D, 5.7GXiI-E, 5.7OSi-B, 5.7OSi-BF, 5.7OSi-C, 5.7OSi-CF, 5.7OSXi-B, 5.7OSXi-BF, 5.7OSXi-C, 5.7OSXi-CF, 5.7Gi-E, 5.7Gi-EF, 5.7GiI-E, 5.7GXi-F, 5.7GXi-FF, 5.7GXiI-F, 5.7OSi-D, 5.7OSi-DF, 5.7OSXi-D, 5.7OSXi-DF, 5.7Gi-F, 5.7Gi-FF, 5.7GXi-G, 5.7GXi-GF, 5.7OSi-E, 5.7OSi-EF, 5.7OSXi-E, 5.7OSXi-EF, 5.7GiI-F, 5.7GXiI-G, 5.7Gi-G, 5.7Gi-GF, 5.7GXi-H, 5.7GXi-HF, 5.7OSi-G, 5.7OSi-GF, 5.7OSXi-G, 5.7OSXi-GF, 5.7GiI-G, 5.7GXiI-H, 5.7Gi-300-J, 5.7Gi-300-JF, 5.7OSi-300-J, 5.7OSi-300-JF, 5.7GXi-J, 5.7GXi-JF, 5.7OSXi-J, 5.7OSXi-JF, 5.7Gi-300-N, 5.7GXi-N |
What's Included
| Component | Qty |
|---|---|
| Idle Air Control Valve (IAC) | 1 |
Condition & Warranty
| Item | Detail |
|---|---|
| Condition | New / New with tags |
| Warranty | Standard |
| Packaging | Sealed retail packaging |
Before You Buy
- Verify your engine model or serial number before ordering
- Fits GM MPI petrol marine engines 4.3 L to 7.4 L in MerCruiser and Volvo Penta applications
- Supplied as the valve only — gasket and mounting hardware are not included
- 30-Day Easy Returns
- Free Worldwide Shipping
- OEM Quality Without the Markup
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Boat Owners' Review
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