The story
Part No.: 11830-RSR46
Application
Function & Overview
The NISMO Oil Separator is engineered to intercept blow-by gases—oils that escape past the piston rings and can contaminate the intake system, intercooler, and air flow meter. It effectively separates oil from these gases and returns the oil directly to the oil pan, reducing internal deposits and preserving engine efficiency. Meanwhile, the cleansed gases are rerouted back into the intake, ensuring emissions compliance and maintaining system integrity.
Key Specifications
-
Pipe Diameter: 50 mm round piping provides stable flow and pressure resilience.
-
Kit Includes: Oil separator unit, 50 mm pipe, and attachment bracket.
Benefits
-
Prevents oil buildup in the intercooler, intake plenum, and airflow meter.
-
Helps reduce overall oil consumption by returning separated oil to the pan.
-
Supports factory-compliant crankcase ventilation—no venting to atmosphere.
Availability
-
Status: Discontinued from most official channels, making it rare and sought-after by enthusiasts and restorers.
Summary Table
| Feature | Details |
|---|---|
| Part No. | 11830-RSR46 |
| Fitment | Skyline GT-R R33 / R34 (RB26DETT) |
| Dimensions | 50 mm round pipe (includes bracket) |
| Function | Separates oil from blow-by gases; returns oil to pan |
| Benefits | Cleaner intake, reduced oil consumption, emissions-friendly |
| Status | Discontinued; limited availability |