• Turbo Oil Drain Hose Kit Holden Commodore VL RB30ET with Garrett GT28R GT30R GT35R
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Holden Commodore VL RB30ET + Garrett GT28R GT30R GT35R Turbo Oil Drain Hose Kit

Holden Commodore VL RB30ET + Garrett GT28R GT30R GT35R Turbo Oil Drain Hose Kit

$89.86 USD
$0.00 USD $89.86 USD
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Technical Description

Oil Drain System for RB30ET Upgrading to GT28R / GT30R / GT35R Turbos

Upgrading the Holden VL RB30ET to a Garrett GT28R, GT30R, or GT35R turbo is one of the most common performance paths for improved boost response and higher power levels.

These GT-series turbos use a different drain flange compared to the OEM RB30ET turbo, meaning the factory oil return line cannot be reused.

This Gryphontek turbo oil drain hose kit includes a CNC-machined GT-series drain flange, a heat-resistant NBR oil drain hose, mild-steel fittings, a 1 mm non-asbestos gasket, and high-tensile bolts.

Whether the turbo is installed in a stock-mount position or upgraded to a top-mount manifold, the kit ensures stable, unrestricted oil return under boost and elevated temperature.

Key Features

‣ Application: Holden Commodore VL RB30ET turbo engines
‣ Turbo Compatibility: Garrett GT28R / GT30R / GT35R 
‣ Upgrade Requirement: OEM oil drain cannot be reused due to GT-series flange and drain geometry differences
‣ Hose Construction: High-temperature NBR oil drain hose rated for continuous thermal load
‣ Flange Material: 6061-T6 CNC-machined aluminum GT28R/GT30R/GT35R 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 clamps + class 8.8 bolts
‣ Mounting Flexibility: Compatible with stock-mount and top-mount GT-series turbo positions
‣ Performance Benefit: Provides smooth oil evacuation during extended RPM, high boost, and elevated CHRA temperature
‣ Custom Length Option: Hose length can be customized for different manifold layouts and turbo heights

Kit Includes

  • NBR turbo oil drain hose
  • 6061-T6 CNC-machined GT-series drain flange
  • 1 mm Interface N-8092 gasket
  • Mild-steel oil drain fittings
  • High-tensile bolts
  • Hose clamps

A Proper Oil Drain System for GT-Series RB30ET Turbo Upgrades

Garrett’s GT28R, GT30R, and GT35R turbos require the correct drain flange and routing for stable CHRA oil evacuation.
This Gryphontek kit ensures the proper fitment, flow, and reliability needed for upgraded RB30ET builds.

⚙️ Equip your RB30ET with an oil drain system engineered specifically for GT28R / GT30R / GT35R turbo upgrades.

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Limited Lifetime Warranty: Covers manufacturing defects. (Excludes racing misuse).

GryphonTek Engineering — Precision Fitment. Global Delivery.