• Turbo Oil Drain Hose Kit Nissan RB20 RB25 RB30 with Garrett GT37R GT40R GT42R GT45R GT47R GT50R GT55R
1 3

Nissan RB20DET RB25DET RB30 + Garrett GT37R GT40R GT42R GT45R GT47R Turbo Oil Drain Hose Kit

Nissan RB20DET RB25DET RB30 + Garrett GT37R GT40R GT42R GT45R GT47R Turbo Oil Drain Hose Kit

$73.85 USD
$0.00 USD $73.85 USD
Sale Sold out
Shipping calculated at checkout.

High-Flow Oil Drain System for RB Engines Running Large-Frame GT-Series Top-Mount Turbos

Garrett’s large-frame GT37R / GT40R / GT42R / GT45R / GT47R turbos are designed for high-power RB builds, providing massive airflow capacity for drag, street/strip, and high-boost applications.

Due to their elevated mounting position and significantly larger CHRA oil volume, a dedicated high-flow oil drain system is essential to prevent oil backup, smoking, and CHRA flooding—common issues when large-frame turbos are paired with undersized OE-style drains.

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

Engineered specifically for top-mount GT-R series turbos, it ensures clean, unrestricted oil evacuation even under extreme boost and high exhaust temperature.

Key Features

‣ Application: Nissan RB20DET / RB25DET / RB30 — Skyline R32 / R33 / R34 (top-mount turbo setups)
‣ Turbo Compatibility: Garrett GT37R / GT40R / GT42R / GT45R / GT47R (large-frame high-flow turbos)
‣ High-Flow Drain Geometry: Enlarged outlet + oversized hose to prevent oil pooling in large-frame CHRAs
‣ Hose Construction: Large-diameter high-temperature NBR oil drain hose suitable for extreme heat and high oil volume
‣ Flange Material: 6061-T6 CNC-machined aluminum GT large-frame drain flange
‣ Fittings: Heavy-duty mild-steel drain fittings for high-vibration RB inline-six operation
‣ Gasket: Interface N-8092 1 mm non-asbestos gasket
‣ Hardware: Stainless clamps + class 8.8 high-tensile bolts
‣ Performance Benefit: Maintains free-flowing oil evacuation during high boost, long pulls, and elevated CHRA temperature
‣ Custom Length Option: Hose length can be tailored for different manifold layouts and turbo heights

Kit Includes

  • Large-diameter high-flow NBR turbo oil drain hose
  • 6061-T6 CNC-machined GT37R/GT40R/GT42R/GT45R/GT47R 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 Large-Frame GT-Series RB Top-Mount Turbo Builds

Large-frame Garrett GT turbos move substantial oil volume and require a properly sized, unrestricted drain path—especially in top-mount configurations.
This Gryphontek kit delivers the correct flange, oversized hose, and high-temperature components demanded by GT37R–GT47R RB builds.

⚙️ Support your high-horsepower RB build with a high-flow oil drain system engineered for GT37R, GT40R, GT42R, GT45R, and GT47R turbos.

  • Worldwide Shipping
  • 30 days returns
  • Custom Solutions
View full details

Customer Reviews

No reviews yet
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)

IN CASE YOU'RE WONDERING

DUTIES & TAXES NOTICE

All duties, tariffs, and import taxes are not included in the product price.

Any additional charges are imposed by Customs and vary by country.

For accurate information, please contact your local customs office or tax authority.

DELIVERY TIMEFRAMES

Our transit times based on deliveries to major cities and are quoted in working days. Please note deliveries to remote areas may take longer.

Most parcels are arriving on time, but delays may be experienced because of the global reduction of flights and extreme weather conditions. Thanks so much for your patience!

SHIPPING POLICY

We are based in Taiwan and ship to worldwide. Our shipping services include standard and express options with tracking numbers. International customers are responsible for any and all taxes, duties, or other additional fees associated with the delivery.

Depending on the country, the shipping methods may vary.

Standard shipping is handled by EMS, USPS, Australia Post, and MyTeamGE, while express shipping is done through DHL Express and FedEx Express.

The items are shipped within 1 business days from confirmation of your order. Business days do not include Saturday, Sunday or International holidays. The shipping time is 3 to 12 days depending on the delivery location. Goods are might shipped from different warehouses at different locations to make it the most convenient for customers.

Please note that once you have placed an order, it is no longer possible to modify your shipping address. All orders are processed automatically and we are unable to expedite or delay shipping times.

REFUND POLICY

Returns
Our policy lasts 30 days. If 30 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange.

To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.

To complete your return, we require a receipt or proof of purchase.
Please do not send your purchase back to the manufacturer.

There are certain situations where only partial refunds are granted
- Any item not in its original condition, is damaged or missing parts for reasons not due to our error
- Any item that is returned more than 30 days after delivery

Refunds
Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.
If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days.

Late or missing refunds
If you haven’t received a refund yet, first check your bank account again. Then contact your credit card company, it may take some time before your refund is officially posted. Next contact your bank. There is often some processing time before a refund is posted. If you’ve done all of this and you still have not received your refund yet, please contact us at gryphon@gryphontek.com.

Exchanges
We only replace items if they are defective or damaged. If you need to exchange it for the same item, send us an email at gryphon@gryphontek.com

Shipping
To return your product, you will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of return shipping will be deducted from your refund.

Depending on where you live, the time it may take for your exchanged product to reach you, may vary.

If you are shipping an item over $75, you should consider using a trackable shipping service or purchasing shipping insurance. We don’t guarantee that we will receive your returned item.