Radium Engineering Sound Symposer Block-Off
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Radium Engineering Sound Symposer Block-Off - Ford Focus ST (LW / LZ)
This Radium Engineering block-off kit (SKU 20-0356) removes the factory sound symposer from the Ford Focus ST – the system that pipes engine noise into the cabin. Once intake and exhaust modifications are made the symposer quickly becomes redundant, and removing it frees up space in the engine bay.
The block-off installs in minutes with a couple of spanners and reuses the high-temperature, chemical-resistant OEM Ford gasket. Fittings are supplied so the machined 1/8" NPT port can either be plugged or used as a vacuum reference for auxiliary components.
Note: On the Focus ST, the Radium 20-0315-FL PCV catch can kit requires this (or another) symposer delete to be fitted for clearance. Installation by a professional is recommended.
Features
- Replaces the OEM sound symposer system
- No cutting or drilling required
- Installs with basic hand tools
- Reuses the factory Ford gasket
- Machined 1/8" NPT port – plug it or use it as a vacuum reference
- Fittings for both options included
Pairs Well With
- Radium Engineering Fluid Lock Dual Catch Can Kit - Ford Focus ST (LZ)
- Radium Engineering Coolant Tank Kit - Ford Focus ST / RS (LW / LZ)
- Radium Engineering PCV Baffle (With Fittings) - Ford EcoBoost / Mazda MZR
- Radium Engineering Fuel Surge Tank Install Kit - Ford Focus ST / RS (LW / LZ)
Need help confirming fitment? Contact our team at sales@chicaneaustralia.com.au.
Vehicle Compatibility
| Make | Model | Chassis | Years | Engine / Notes |
|---|---|---|---|---|
| Ford | Focus ST | LW | 2011-2014 | 2.0L EcoBoost |
| Ford | Focus ST | LZ | 2015-2018 | 2.0L EcoBoost |
Product
- Brand
- Radium Engineering
- Part number(s)
- 20-0356
Details
- Product
- Sound symposer block-off kit
- Auxiliary port
- 1/8" NPT (plug or vacuum reference)
- Gasket
- Reuses OEM Ford gasket
- Modifications
- None – no cutting or drilling
Contents
Billet aluminum block-off plate (black anodized)
1/8" NPT billet aluminum elbow fitting
1/8" NPT billet aluminum plug
Panel locking plug (to close firewall opening)
Stainless steel hardware
Zip tie for hose management

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