Section 03-04A: Fuel Charging and Controls, 4.9L Engine | 1996 Vehicles Equipped with 4.9L SFI Engines Workshop Manual |
The intake manifold (9424) is a two-piece (upper and lower) aluminum casting. Runner lengths are tuned to optimize engine torque and power output. The intake manifold provides mounting flanges for the throttle body (9E926), fuel injection supply manifold (9D280) and accelerator control bracketry and the EGR valve and supply tube. Vacuum taps are provided to support various engine accessories. Pockets for the fuel injectors (9F593) are machined to prevent both air and fuel leakage. The pockets in which the fuel injectors are mounted are placed to direct the injector fuel spray immediately in front of each engine intake valve (6507).
| Item | Part Number | Description |
|---|---|---|
| 1 | 9424 | Intake Manifold, Upper |
| 2 | 9H486 | Intake Manifold Upper Gasket |
| 3 | 12A697 | Intake Air Temperature Sensor |
| 4 | 390715 | Stud (7 Req'd.) 5/16-18 x 2.505 |
| 5 | 9424 | Intake Manifold |
| 6 | 390659-S100 | PCV Connector |
| 7 | 9A474 | Intake Manifold Vacuum Outlet Fitting and Cap |
| A | — | Tighten to 16-24 Nm (12-18 Lb-Ft) |