Exhaust Hangers

This procedure covers the replacement of worn or damaged exhaust rubber hangers on the 2014-2019 Toyota Corolla 1.8L I4, which support the exhaust system and isolate it from the chassis.

Warnings

Tools required

Parts

• Exhaust rubber hanger (rear) × 1 — Use OEM specification or equivalent
• Exhaust rubber hanger (mid-pipe) × 1 — Use OEM specification or equivalent

Preparation

1. Park vehicle on level, solid ground and engage parking brake
2. Place wheel chocks behind rear wheels
3. Ensure exhaust system is completely cool to the touch
4. Raise front of vehicle with floor jack and support securely on jack stands at factory lift points
5. Inspect all exhaust hangers from underneath to identify which require replacement - look for cracks, tears, or excessive stretching in the rubber

Procedure

1. 1

   Locate exhaust hangers
   Identify the exhaust hanger locations on your Corolla. The 1.8L exhaust system typically has 4-5 rubber hangers: one near the catalytic converter/front pipe junction, one or two on the mid-pipe section, and one or two at the rear muffler section. The hangers consist of rubber insulators with metal hooks that connect the exhaust pipe brackets to chassis-mounted hangers.
2. 2

   Apply penetrating oil
   Spray penetrating oil on the metal hook portions of the hangers you plan to replace and allow 5-10 minutes of soak time. Focus on the interface where the exhaust bracket hooks insert into the rubber hanger. This is especially important on older vehicles where corrosion may have bonded rubber to metal.
3. 3

   Support exhaust system
   Before removing any hangers, ensure the exhaust system has adequate support. If replacing multiple hangers, use a floor jack with a block of wood under the muffler or mid-pipe section to prevent the exhaust from dropping or shifting position when hangers are disconnected. Position the jack to just barely touch the exhaust without applying upward pressure.
4. 4

   Remove damaged rear hanger
   Starting with the rearmost hanger near the muffler, use a pry bar or large flathead screwdriver to lever the metal hook on the exhaust bracket out of the rubber hanger. Insert the pry bar between the exhaust bracket and the rubber, then twist and pry to pop the hook free. You may need to apply force in multiple directions. The rubber hanger itself remains bolted to the chassis mount.
5. 5

   Remove chassis-mounted rubber hanger
   Once the exhaust bracket is free, remove the rubber hanger from its chassis mounting point. On most Corolla models, the rubber hanger is retained by a single bolt or stud with a nut. Use a 10mm or 14mm socket to remove the fastener, then pull the old rubber hanger off the chassis bracket. Note the orientation for installation of the new hanger.
   Torque spec

   Hanger Bolts19 Nm (14 lb-ft)
6. 6

   Inspect exhaust bracket
   With the hanger removed, inspect the metal hook on the exhaust pipe bracket for damage, excessive rust, or bending. Use a wire brush to clean the hook surface. If the bracket is severely corroded or bent, it should be replaced to ensure proper hanger engagement. Minor surface rust is acceptable.
7. 7

   Install new rubber hanger to chassis
   Position the new rubber hanger onto the chassis mounting bracket in the same orientation as the original. The rubber portion should face downward toward the exhaust bracket hook. Install the retaining bolt or nut finger-tight first to ensure proper alignment, then torque to specification.
   Torque spec

   Hanger Bolts19 Nm (14 lb-ft)
8. 8

   Connect exhaust bracket to new hanger
   Apply silicone spray lubricant to the metal hook on the exhaust bracket and the inside of the new rubber hanger opening. This makes installation significantly easier. Using a pry bar for leverage, align the exhaust bracket hook with the rubber hanger opening and pry/push the hook into the rubber until it seats fully. You should feel and hear a definitive 'pop' when properly engaged. Verify the hook is completely through the rubber and cannot be easily pulled free.
9. 9

   Replace mid-pipe hanger if needed
   Repeat steps 4-8 for the mid-pipe hanger(s). The mid-section hanger(s) are located approximately under the driver's seat area. Access may be slightly more restricted. Ensure the exhaust pipe sits in its natural position without binding or tension before fully engaging the hanger. You may need to adjust the support jack position to align the bracket with the new rubber hanger.
10. 10

    Verify exhaust alignment
    Remove any jack support from under the exhaust system and allow it to hang naturally on the new hangers. Visually inspect the entire exhaust routing from underneath. The exhaust should have approximately 1-2 inches of clearance from the chassis, fuel lines, and brake lines at all points. The tailpipe should be centered in the rear bumper cutout and not touching the bumper. Rock the exhaust system gently side-to-side - it should move slightly but return to center without contacting any vehicle components.
11. 11

    Check heat shield clearance
    Verify that all heat shields remain properly positioned and secured after hanger replacement. Check that heat shields have not shifted and are not touching the exhaust pipe or creating rattles. If any heat shield bolts were loosened during access, re-torque them to specification.
    Torque spec

    Heat Shield Bolts10 Nm (7 lb-ft)

Reassembly

1. Lower vehicle from jack stands carefully
2. Remove wheel chocks
3. Start engine and verify no abnormal exhaust sounds or rattles
4. Test drive vehicle and listen for any exhaust contact points or vibrations transmitted to the cabin

Verification

• With engine running, there should be no exhaust leaks, unusual vibrations, or rattling sounds
• Exhaust system should hang evenly with proper ground clearance at all points
• Rock the exhaust system manually - rubber hangers should flex but hold the exhaust securely in position
• Tailpipe should remain centered in bumper cutout and not contact any body panels
• After test drive, re-inspect hangers for proper seating and verify no components have shifted

More procedures for this vehicle