SECTION 303-01B: Engine — 5.0L (4V)
2014 Mustang Workshop Manual
IN-VEHICLE REPAIR
Procedure revision date: 01/07/2013

Exhaust Manifold — LH


Material
Item Specification
Motorcraft® Metal Surface Prep
ZC-31-A

LH Exhaust Manifold

Item Part Number Description
1 W714870 LH exhaust manifold nuts (8 required)
2 9431 LH exhaust manifold
3 9448 LH exhaust manifold gasket
4 W714869 LH exhaust manifold studs (8 required)

Removal

  1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to Section 100-02 .
  1. Disconnect the battery ground cable. For additional information, refer to Section 414-01 .
  1. Remove the 2 steering column dash boot nuts.
  1. NOTE: Use a steering wheel holding device (such as Hunter® 28-75-1 or equivalent).

    Using a suitable holding device, hold the steering wheel in the straight-ahead position.
  1. If equipped, remove the 4 nuts and the strut tower cross brace.
  1. NOTE: The engine appearance cover rubber grommets may remain on the cover. If so, remove the grommets from the cover and install them on the intake manifold before installing the cover.

    If equipped, remove the engine appearance cover.
  1. Disconnect the sound enhancement pipe from the Air Cleaner (ACL) outlet pipe and the ACL . For additional information, refer to the exploded view in Section 303-12 .
  1. Remove the LH catalytic converter. For additional information, refer to Section 309-00 .
  1. Disconnect the LH Heated Oxygen Sensor (HO2S) electrical connector.
  1. Remove the bolt and position the steering intermediate shaft aside.
  1. Remove the 8 nuts and the LH exhaust manifold.
  1. Clean and inspect the LH exhaust manifold. For additional information, refer to Section 303-00 .
  1. Remove and discard the 8 LH exhaust manifold studs.

Installation

  1. NOTICE: Do not use metal scrapers, wire brushes, power abrasive discs or other abrasive means to clean the sealing surfaces. These tools cause scratches and gouges which make leak paths. Use a plastic scraper to clean the sealing surfaces.

    Clean the exhaust manifold mating surface of the cylinder head with metal surface prep. Follow the directions on the packaging.
  1. Install 8 new LH exhaust manifold studs.
  1. Install new gaskets, the LH exhaust manifold and 8 new nuts.
  1. Position the steering intermediate shaft and install the bolt.
  1. Connect the LH HO2S electrical connector.
  1. Install the LH catalytic converter. For additional information, refer to Section 309-00 .
  1. Connect the sound enhancement pipe to the ACL outlet pipe and the ACL . For additional information, refer to the exploded view in Section 303-12 .
  1. NOTE: The engine appearance cover rubber grommets may remain on the cover. If so, remove the grommets from the cover and install them on the intake manifold before installing the cover.

    If equipped, install the engine appearance cover.
  1. If equipped, install the strut tower cross brace and the 4 nuts.
  1. Install the 2 steering column dash boot nuts.
  1. Connect the battery ground cable. For additional information, refer to Section 414-01 .