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Looking for a middle silencer for your Opel Vectra C 1.8 estate or a Signum?
This is the one you need.
It’s a brand new, straight oval muffler from Edex or Polmo, designed to absorb sound and keep your exhaust note in check.
It mounts underneath the car and is clamped on, so installation is pretty straightforward if you’ve got basic tools.

The part numbers to look for are 17.349 EX and 17.75 PO, and it replaces a bunch of OEM numbers like 13113874, 5852236, and 284-383 from Bosal.

It’s made of coated steel with a matte silver finish, so it’s built to last and resists rust decently.

The length is 175mm, and it’s specifically made for this model—not a universal fit.

This silencer is all about reducing noise and keeping your exhaust flowing right.

It’s a quality part made in Poland, and it comes with a warranty.

If your old silencer is rusted out or just too loud, swapping this in will quiet things down and pass inspection.

Great for keeping your Opel running smooth and legal.

4.5 out of 5