

CTS Turbo O2 Pipe 1.8T (Transverse FWD)
The CTS Turbo O2 pipe is built for big-turbo VW/Audi 1.8T transverse 20V builds running a T31-style T3-flanged turbine housing (T3 2.5" 4-bolt) and the CTS Turbo tubular cast exhaust manifold. It accepts all T31-flanged turbos plus a 38mm TiAL or 39mm PTE external wastegate.
Paired with the CTS Turbo manifold and a stock-placement downpipe, it acts as the intermediary pipe that links your existing stock or aftermarket K03 turbo-back exhaust to your new big turbo. The turbo flange is T31 (2.5") and the piping flares to 3" just past the connection (see product photos), giving maximum flow with minimal install effort.
Details
- T31-style T3 flange (T3 2.5" 4-bolt) flaring to 3"
- Accepts all T31-flanged turbos
- Fits 38mm TiAL or 39mm PTE external wastegate
- Designed for use with the CTS Turbo top-mount exhaust manifold
Fitment
- VW/Audi 1.8T transverse 20V engine, LHD vehicles only
Made-to-order part; production time is 20 business days. A CTS Turbo top-mount exhaust manifold must be used.
Emissions disclaimer: This product is intended for off-road, race, or closed-course competition use only and is not legal for use on pollution-controlled vehicles operated on public roads in most states and provinces. You are responsible for compliance with all applicable emissions laws. Please check your local laws before purchase and installation.
Ships from our Vancouver shop — KORE SPEED is proudly Canadian-owned, with no surprise cross-border duties for Canadian buyers. Questions on fitment? Email support@korespeed.com.
Pairs well with

CTS Turbo O2 Pipe 1.8T (Transverse FWD)
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