AC Schnitzer silencer for BMW 4 series G22/G23 420i (18123221229)

for 4 series G22 Coupé
without Otto particle filter
for 420i with engine B48C only in conjunction with adapter listed below
for vehicles with M aerodynamic package SA-715
Please indicate the complete chassis number (VIN) when ordering !
Important consumer notice: This article is not intended for use in the public road traffic permitted. In Germany applies: Use only for racing purposes!
Scope of Delivery:
- rear silencer made of stainless steel
- exhaust trap fixed
- four "Sport black" endpipes
- rear skirt insert "Dark Shadow" B51129854828
- Heckschürzeneinsatz "Dark Shadow" B51128078907
- underbody panneling
- isolation

Philosophy / Technology
The original AC Schnitzer High Performance stainless steel silencers with the various AC Schnitzer tailpipe versions offer a sporty, effective overall package – especially when combined with an AC Schnitzer performance upgrade. A sonorous sound (on gasoline-powered vehicles) and a sporty look are always included. The certificates of authenticity for the original AC Schnitzer silencers and the original AC Schnitzer tailpipes guarantee you the highest level of safety and the best quality.

Greater agility
With original AC Schnitzer silencers specifically tuned for your engine, improved and more direct response is achieved, as exhaust gases are evacuated particularly quickly, allowing the engine to develop its full power freely. Improved exhaust gas evacuation allows your vehicle's engine to operate more efficiently and breathe more freely, which can positively impact engine performance.

Increased driving pleasure
Even at low engine speeds, the distinctive, sporty, sonorous sound is clearly audible.

Increased security
Extremely long service life and optimal resistance to heat, vibration and corrosion of the silencers.

Four development criteria in AC Schnitzer silencer development

1. Sound Engineering
Each vehicle undergoes its own sound development in the sound lab, before the exhaust systems are tested at all possible rev ranges, both indoors and outdoors, and during a drive-by. The extensive test drives take place on racetracks and in public transport.

2. Accuracy of fit
For all vehicle types and engine variants, the floorpan is analyzed for its installation space. The sound box is then precisely defined with all standard mounting points. It is important to ensure reduced exhaust backpressure while simultaneously determining the optimal flow path to achieve the best performance in terms of torque and horsepower. Last but not least, the aerodynamic development in the rear apron area is optimally adapted to the exhaust systems and tailpipe variants, if necessary.

3. Diversity
The exhaust variants offered by AC Schnitzer start with tailpipes and extend through silencers and twin silencers to complete exhaust systems and downpipes including sports catalysts.

4. Material/Quality
Only high-quality stainless steel materials are used in our exhaust systems.

EC type-approval
The approval of AC Schnitzer special parts for road use is a key goal for us when developing new components. This is also crucial when developing new exhaust systems, mufflers, and sound pipes. Most AC Schnitzer sports rear silencers have an EC type approval. An entry in the vehicle documents is not required if the EC type approval is present.

Scope of delivery:
- Silencer made of V2A stainless steel
- Exhaust flap
- Four exhaust tailpipes in "Sport black" design

Uniqueness of the AC Schnitzer silencers
- Stainless steel silencer
- Exhaust tailpipes in "Sport" design
- Various tailpipe versions available
- Acoustic and visual calling card of the car
- Sonorous sound
- Improved exhaust passage
- better "breathing" of the engine

Stock Availability

Due to the amount of bespoke orders it is not always possible for us to keep every item in stock at all times. If you require the item urgently please contact us to check stock before purchase.

Call on 01933 685840

Wheels & Tyres

All wheel & tyre packages are special order and cannot be cancelled or returned once purchased.

All in stock wheel & tyre packages come from Germany and have a 2-3 week lead time which includes tyre fitting.

Can I have these parts fitted?

We offer fitting on all our parts.

If you would like your parts fitting please contact us at 

info@ac-schnitzer.co.uk before you order online.

UK Next Day Delivery

We offer UK next working day delivery on all IN STOCK products. Please note all stock coming from Germany can be subject to 2-3 week lead time. Once in the UK these will be shipped UK next working day.

Any lead times longer than this and we will contact you to let you know.