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Eclipse Cat-back exhaust Install Guide

Your Eclipse

Pick your year to see what fits.

+3–10 whp (est.)
Hard$380–$8002–3 hrs
All Eclipse 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

    • Soak the bolts and unbolt the old system.
    Watch this step (on a 1999 Eclipse) (3:59–8:29)

  2. Install the new exhaust

    • Hang the new system and start the bolts.
    Watch this step (8:29–12:10)

  3. Finish the fit

    • Line it up and tighten everything.
    Watch this step (12:10–14:23)

  4. Remove the old exhaust

    • Soak the bolts and unbolt the old system.
    Watch this step (on a 1999 Eclipse) (3:59–8:29)

  5. Install the new exhaust

    • Hang the new system and start the bolts.
    Watch this step (8:29–12:10)

  6. Finish the fit

    • Line it up and tighten everything.
    Watch this step (12:10–14:23)

  7. Remove the old exhaust

    • Unbolt the old system.
    Watch this step (HKS on a 2G GSX) (2:34–4:25)

  8. Install the new exhaust

    • Hang the new system and tighten it.
    Watch this step (4:25–6:01)

  9. Remove the stock exhaust

    • Unbolt the old system.
    Watch this step (Megan on a 3G Eclipse) (0:52–5:07)

  10. Test fit

    • Hang the new system and line it up.
    Watch this step (5:07–7:13)

  11. Install the pipes

    • Tighten the pipes.
    Watch this step (7:13–10:30)

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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