








Korsh x COBB Tuning Engine-Back UEL Package for Subaru WRX 2011-2014 / STI 2011-2021 (Auto)
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Description
Korsh x COBB Tuning Engine-Back UEL Package — Subaru WRX Auto 2011–2014 / STI 2011–2021
Part Number: COB-EEB-UEL-11-AUTO | Fitment: Subaru WRX (Automatic) 2011–2014 & Subaru STI 2011–2021
The complete engine-back exhaust solution for your EJ-powered Subaru — with the iconic boxer rumble kept intact. This curated package pairs Korsh's unequal length headers and auto-specific downpipe with the COBB Tuning cat-back exhaust system — everything from the engine to the tip, engineered to work together for maximum flow, faster spool, and that unmistakable Subaru exhaust character. Bolt it on and feel the difference across the entire rev range.
Note: Unequal length headers retain the iconic Subaru boxer exhaust note.
Package Contents
| Component | Brand | Part Number |
|---|---|---|
| Unequal Length Headers | Korsh | KOR-EXH-UEL-001 |
| Downpipe (Auto) | Korsh | KOW-EXHDP-08-AUTO |
| Cat-Back Exhaust System | COBB Tuning | 515132 |
Vehicle Fitment
| Subaru WRX (Auto) | 2011–2014 (EJ engine) |
| Subaru STI | 2011–2021 (EJ engine) |
Package Highlights
- ✅ Complete engine-back solution — headers, downpipe, and cat-back in one package
- ✅ Korsh unequal length headers — retains the iconic Subaru boxer exhaust note
- ✅ Korsh downpipe — engineered specifically for automatic transmission fitment
- ✅ COBB Tuning cat-back exhaust — proven performance, refined tone
- ✅ All components designed to work together for optimal flow and fitment
- ✅ Direct bolt-on — all gaskets and hardware included
Fitment Notes
- ✅ Unequal length headers retain the iconic Subaru boxer exhaust sound
- Downpipe (KOW-EXHDP-08-AUTO) is specific to automatic transmission variants
- ECU tuning recommended for optimal performance
Available Part Numbers:
- KOR-MAN-ULH-001 — Korsh Unequal Length Headers
- KOW-EXHDP-08-AUTO — Korsh Downpipe (Auto)
- 515132 — COBB Tuning Cat-Back Exhaust System
If you're unsure whether this will fit your vehicle, contact our team of experts via email at hello@iilumolab.com and send through a few photos of the car for us to verify fitment.
Installation
We always recommend professional fitment for guaranteed satisfaction. If you're wanting a hassle-free installation, feel free to contact our friendly team as we offer installation services in-store at our Melbourne workshop. For more details, contact us here.
Note
Upon receiving the item, please ensure that the part is indeed the correct item you have ordered. This can be achieved by checking labels on the packaging. Please also ensure a proper test fit of the item is conducted prior to paint and/or installation. Returns/Warranty claims will be voided if the item has been tampered with, or is no longer in resalable/new condition.

