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Lexus IS Cat-back exhaust Install Guide

Your Lexus IS

Pick your year to see what fits.

This page covers the US IS sedan and SportCross. Not the convertible or IS F.

+2–8 whp (est.)
Hard$550–$1,0002–3 hrs
All Lexus IS mods

Why do it

Brings out the engine's sound.

Tools you'll need

Starting out? See our budget tool list.

Parts to buy

Double-check fitment before buying. We may earn a commission when you buy through these links, at no extra cost to you.

Steps

  1. Remove the old exhaust

    • Remove the old hardware and gasket.
    Watch this step (dnamotoring, on an IS300) (1:17–2:09)

  2. Hang the new exhaust

    • Fit it into the rubber hangers.
    Watch this step (2:09–2:28)

  3. Join the sections

    • Bolt it together with the new gasket.
    Watch this step (2:28–3:24)

  4. Remove the factory exhaust

    • Undo the bolts and hangers.
    Watch this step (JDee, on an IS250) (3:44–6:11)

  5. Get it ready

    • Lay out the new sections.
    Watch this step (6:11–8:09)

  6. Fit the new exhaust

    • Hang it and tighten it all.
    Watch this step (8:09–9:17)

How to know it worked

Did this guide work for you?

Safety first

  • Park on flat ground, set the parking brake and chock the wheels.
  • Never get under a car held up only by a jack. Use jack stands.
  • Let the engine and exhaust cool first.
  • Disconnect the battery before unplugging electrical parts.
  • Wear safety glasses.
  • If something doesn't match your car, stop and ask a shop.

Follow your part's instructions and your service manual's torque specs.

Cat-Back Exhaust install guides for other cars

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