Nissan RB20DET RB25DET RB30 + BorgWarner S200 S300 S400 Turbo Oil Drain Hose Kit

High-Flow Oil Drain System for RB Engines Running BorgWarner S200 / S300 / S400 Top-Mount Turbos

BorgWarner’s S200, S300, and S400 turbos are widely used in high-horsepower RB builds, offering exceptional turbine efficiency, robust construction, and massive flow capacity for drag and high-boost street setups.

Because these SX-E turbos use a large journal-bearing CHRA and sit much higher in top-mount configurations, they circulate substantially more oil than factory RB turbos.
This makes a proper high-flow oil drain system essential to prevent CHRA flooding, oil pooling, or smoking.

This Gryphontek turbo oil drain hose kit includes a CNC-machined BorgWarner S-Series drain flange with an enlarged bottom port, a large-diameter high-temperature NBR drain hose, steel fittings, a 1 mm non-asbestos gasket, and high-tensile hardware.

Designed specifically for RB top-mount S-Series applications, it maintains unrestricted oil evacuation even under extreme exhaust temperature and high boost.

Key Features

‣ Application: Nissan RB20DET / RB25DET / RB30 — Skyline R32 / R33 / R34 (top-mount turbo setups)
‣ Turbo Compatibility: BorgWarner S200 / S300 / S400 SX-E turbos
‣ High-Flow Drain Geometry: Enlarged outlet + oversized hose for high-volume S-Series oil return
‣ Hose Construction: Large-diameter high-temp NBR oil drain hose suitable for continuous thermal load
‣ Flange Material: 6061-T6 CNC-machined aluminum S-Series drain flange
‣ Fittings: Mild-steel drain fittings engineered for secure sealing with RB engine vibration
‣ Gasket: Interface N-8092 1 mm non-asbestos gasket
‣ Hardware: Stainless clamps + class 8.8 high-tensile bolts
‣ Performance Benefit: Prevents CHRA oil pooling during long pulls, anti-lag use, and high-EGT operation
‣ Custom Length Option: Hose length can be customized for various manifold layouts and turbo heights

Kit Includes

• Large-diameter high-flow NBR turbo oil drain hose
• 6061-T6 CNC-machined BorgWarner S-Series drain flange（enlarged bottom port）
• 1 mm Interface N-8092 gasket
• Mild-steel drain fittings
• High-tensile bolts
• Hose clamps

High-Flow Oil Return for BorgWarner AirWerks Series RB Top-Mount Turbo Builds

BorgWarner AirWerks Series turbos move a significant volume of oil and require an unrestricted drain path—especially in top-mount RB installations.
This Gryphontek kit delivers the correct enlarged flange, oversized hose, and high-temperature hardware required for reliable drainage on S200/S300/S400 builds.

⚙️ Support your high-power RB setup with an oil drain system engineered for BorgWarner AirWerks Series turbos.