Holden Commodore VL RB30ET + Holset HX30 HX35 HX40 Turbo Oil Drain Hose Kit

High-Flow Oil Drain Solution for RB30ET Holset HX-Series Turbo Upgrades

When upgrading the Holden Commodore VL RB30ET to a Holset HX30, HX35, or HX40, a new oil drain solution is required to support the higher oil flow demands of these high-output turbos.

Holset HX-series turbos rely on a free-flowing oil return, and restrictive drain designs can lead to oil backup, smoking, or premature turbo damage.

This Gryphontek turbo oil drain hose kit is engineered specifically for Holset HX-series applications, featuring a CNC-machined drain flange with an enlarged bottom drain port, a large-diameter high-temperature NBR hose, mild-steel fittings, a 1 mm non-asbestos gasket, and high-tensile hardware.

It provides a clean, unrestricted oil return path suitable for RB30ET top-mount Holset HX30 / HX35 / HX40 builds.

Key Features

‣ Application: Holden Commodore VL RB30ET turbo engine
‣ Turbo Compatibility: Holset HX30 / HX35 / HX40
‣ Mounting Type: Top-mount turbo setups
‣ High-Flow Drain Design: Enlarged bottom drain port to prevent oil restriction and CHRA oil backup
‣ Hose Construction: Large-diameter high-temperature NBR oil drain hose designed for continuous heat exposure
‣ Flange Material: 6061-T6 CNC-machined aluminum Holset HX-series drain flange
‣ Fittings: Mild-steel oil drain fittings for secure sealing under RB30ET vibration
‣ Gasket: Interface N-8092 1 mm non-asbestos gasket
‣ Hardware: Stainless hose clamps + class 8.8 high-tensile bolts
‣ Reliability Benefit: Reduces smoking risk and protects the turbo from oil pooling caused by restrictive drain designs
‣ Custom Length Option: Hose length can be customized to suit different top-mount manifold layouts and turbo heights

Kit Includes

• High-flow NBR turbo oil drain hose
• 6061-T6 CNC-machined Holset HX30 / HX35 / HX40 drain flange (enlarged bottom port)
• 1 mm Interface N-8092 oil drain gasket
• Mild-steel oil drain fittings
• High-tensile bolts
• Hose clamps

Protect Your Holset HX-Series Turbo With a Proper High-Flow Oil Drain

Holset HX-series turbos demand a high-flow oil return system to operate safely—especially on top-mount RB30ET setups.
This Gryphontek oil drain kit eliminates the restriction issues found in undersized aftermarket flanges and provides the flow capacity required for serious boost and power.

⚙️ Upgrade your RB30ET with a high-flow oil drain system engineered specifically for Holset HX30, HX35, and HX40 turbo applications.