The HKS GT Extension Kit increases airflow by replacing the restrictive factory O2 Housing with a Stainless Steel free flowing unit. On certain applications, this replacement O2 Housing will also include an integrated downpipe for maximum performance.
Part Number: 1418-RN005
Fits the following vehicles/engines
* Nissan Skyline/ RB26DETT
HKS Extension Kit RB26DETT (1418-RN005)
- Piping: 60.5mm x2 Main / 38mm x2 Bypass