This procedure covers removal and replacement of the rear exhaust pipe section on a 2014-2019 Toyota Corolla 1.8L, from the mid-pipe flange to the rear muffler.

Warnings

Tools required

Parts

• Rear exhaust pipe section × 1 — Use OEM specification
• Exhaust flange gasket × 1 — Use OEM specification
• Exhaust flange bolts and nuts × 1 — Use OEM specification
• Exhaust rubber hangers (if damaged) × 1 — Use OEM specification

Preparation

1. Ensure engine and exhaust system are completely cold to the touch
2. Park vehicle on level, solid ground and apply parking brake firmly
3. Place wheel chocks behind front wheels
4. Apply penetrating oil to all exhaust flange bolts and allow to soak for 15-30 minutes
5. Raise rear of vehicle using floor jack at designated rear jacking point
6. Support vehicle securely on jack stands placed at manufacturer-specified lift points on the chassis
7. Visually inspect exhaust routing and hanger locations to plan removal sequence

Procedure

1. 1

   Remove heat shield (if equipped)
   Locate any heat shields covering the rear exhaust section. Remove heat shield mounting bolts using a 12mm socket. Set heat shield and bolts aside for reinstallation. Inspect heat shield for damage and replace if severely corroded or bent.
   Torque spec

   Heat Shield Bolts10 Nm (7 lb-ft)
2. 2

   Disconnect mid-pipe flange connection
   Locate the two-bolt flange connection where the rear exhaust pipe connects to the mid-pipe (approximately under the rear seat area). Using a 14mm socket on the bolt heads and 14mm wrench on the nuts, remove both flange bolts. Support the rear pipe weight with one hand while removing the second bolt to prevent it from dropping. If bolts are seized, apply additional penetrating oil and allow to soak, or carefully apply heat with a torch if safe to do so.
   ⚠Flange bolts are prone to seizing and may break during removal. Have replacement bolts available if originals are heavily corroded.
   Torque spec

   Exhaust Flange Bolts45 Nm (33 lb-ft)
3. 3

   Separate flange connection
   Once bolts are removed, carefully pull the rear pipe rearward to separate the flange connection. The flange gasket may be stuck; gently pry with a flat blade screwdriver if needed. Remove and discard the old flange gasket. Inspect the mid-pipe flange face for damage or warping.
4. 4

   Remove rear exhaust hangers
   Locate the rubber exhaust hangers supporting the rear pipe section (typically 2-3 hangers between the flange and muffler). Using a pry bar or by hand, carefully pry the exhaust pipe hooks out of the rubber hanger insulators. Work from front to rear, relieving tension gradually. Inspect rubber hangers for cracks or deterioration and replace if damaged.
   ⚠Rubber hangers are under tension. Control the exhaust pipe carefully as you remove each hanger to prevent it from dropping suddenly.
5. 5

   Lower and remove rear exhaust section
   Once all hangers are disconnected, carefully lower the rear exhaust pipe section and remove it from under the vehicle. Maneuver carefully to avoid damage to fuel lines, brake lines, or body panels. Set the old pipe aside on a protected surface.
6. 6

   Clean flange surface and inspect components
   Using a wire brush, thoroughly clean the mid-pipe flange surface to remove all old gasket material, rust, and carbon deposits. The flange face must be completely clean for proper sealing. Inspect the mid-pipe flange for cracks, warping, or damage. Inspect all rubber exhaust hangers for tears, hardening, or deterioration and replace as necessary.
7. 7

   Prepare new exhaust pipe
   Position the new rear exhaust pipe section near the installation area. Apply a thin, even coat of anti-seize compound to the threads of the new flange bolts (or cleaned original bolts if reusing). Do not apply anti-seize to bolt heads or flange faces. Verify the new pipe matches the original in length, bend angles, and hanger hook positions.
8. 8

   Install exhaust hangers
   Lift the new rear exhaust pipe into approximate position under the vehicle. Beginning at the rear, insert each exhaust pipe hook into its corresponding rubber hanger insulator. Use a pry bar or lubricate the rubber slightly with soapy water if needed to ease installation. Ensure all hooks are fully seated in the hangers before proceeding.
9. 9

   Connect flange with new gasket
   Position the new flange gasket between the mid-pipe flange and the new rear pipe flange. Align the bolt holes carefully. Support the rear pipe weight while aligning. Insert both flange bolts through the flanges and gasket, then hand-thread the nuts onto the bolts. Do not tighten yet.
10. 10

    Align exhaust system
    With flange bolts hand-tight, check the entire rear exhaust section alignment. Ensure adequate clearance from fuel tank, suspension components, chassis, and body panels (minimum 25mm clearance recommended). Adjust pipe position by loosening hangers slightly if needed. Rock the pipe gently to verify it hangs freely without binding.
11. 11

    Torque flange bolts
    Using a torque wrench, tighten the flange bolts in a cross pattern (alternate between bolts) to the specified torque of 45 Nm (33 lb-ft). Tighten gradually in stages: first to 20 Nm, then to final torque. This ensures even gasket compression and prevents flange warping.
    Torque spec

    Exhaust Flange Bolts45 Nm (33 lb-ft)
12. 12

    Reinstall heat shield
    If heat shield was removed, position it back in place over the exhaust pipe. Install and tighten heat shield mounting bolts to 10 Nm (7 lb-ft) using a torque wrench. Ensure heat shield does not contact the exhaust pipe and has proper clearance.
    Torque spec

    Heat Shield Bolts10 Nm (7 lb-ft)
13. 13

    Final inspection and lower vehicle
    Perform a final visual inspection of all connections, clearances, and hanger engagement. Verify no tools or parts were left under the vehicle. Carefully raise the vehicle slightly using the floor jack to unload the jack stands, remove the stands, then lower the vehicle completely to the ground.

Reassembly

1. Verify all flange bolts are torqued to specification and anti-seize was applied during installation
2. Confirm all exhaust hangers are properly engaged and exhaust system has proper clearance from chassis and body
3. If heat shield was removed, ensure it is reinstalled and properly secured

Verification

• Start the engine and allow it to idle. Listen carefully for any exhaust leaks at the flange connection (hissing or ticking sounds indicate a leak)
• With engine running, visually inspect the flange connection for any visible exhaust gas leakage
• Rev engine to 2500-3000 RPM while listening for abnormal exhaust noise or rattling against body/chassis
• After engine reaches operating temperature, perform a final visual inspection for leaks and verify no contact between exhaust and surrounding components
• Test drive vehicle and listen for any rattles, vibrations, or exhaust drone that would indicate improper installation or alignment

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