SECTION 303-01A: Engine — 3.7L
2014 Mustang Workshop Manual
IN-VEHICLE REPAIR
Procedure revision date: 01/07/2013

Exhaust Manifold — RH


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


Item Part Number Description
1 — Heated Oxygen Sensor (HO2S) electrical connector (part of 12C508) (2 required)
2 W714265 Catalytic converter-to-exhaust manifold nuts (4 required)
3 5F250 Catalytic converter assembly (Y-pipe)



Item Part Number Description
1 W714133 RH exhaust manifold heat shield bolt (2 required)
2 9A462 RH exhaust manifold heat shield
3 W712679 Heater tube bolt
4 W701706 RH exhaust manifold nut (6 required)
5 9430 RH exhaust manifold
6 9448 RH exhaust manifold gasket
7 W712244 RH exhaust manifold stud (6 required)

Removal

  1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to Section 100-02 .

  1. NOTE: LH shown, RH similar.

    If equipped, remove the 4 nuts (2 shown) and the strut tower cross brace.
  1. Detach and disconnect the RH and LH Heated Oxygen Sensor (HO2S) electrical connectors.
  1. Remove and discard the LH and RH catalytic converter-to-exhaust manifold nuts and lower the catalytic converter assembly.
  1. Remove the 2 bolts and the RH exhaust manifold heat shield.
  1. Remove the heater tube bolt.
  1. Remove the 6 nuts and the RH exhaust manifold.
  1. Clean and inspect the RH exhaust manifold. For additional information, refer to Section 303-00 .
  1. Remove and discard the 6 RH exhaust manifold studs.

  1. NOTICE: Do not use metal scrapers, wire brushes, power abrasive discs or other abrasive means to clean the sealing surfaces. These may cause scratches and gouges resulting in 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.

Installation

  1. Install 6 new RH exhaust manifold studs.

  1. NOTICE: Failure to tighten the exhaust manifold nuts to specification a second time will cause the exhaust manifold to develop an exhaust leak.

    Using a new gasket, install the RH exhaust manifold and 6 new nuts. Tighten in 2 stages in the sequence shown:
  1. Install the heater tube bolt.
  1. Install the RH exhaust manifold heat shield and the 2 bolts.
  1. Raise the catalytic converter and install the new LH and RH catalytic converter-to-exhaust manifold nuts.
  1. Connect and attach the RH and LH HO2S electrical connectors.

  1. NOTE: LH shown, RH similar.

    If equipped, install the strut tower cross brace and the 4 nuts (2 shown).