• GryphonTek Turbo Oil Feed Inlet Fitting for Subaru EJ20 EJ25 - 4AN Flare with Precision 1.0mm/1.8mm Restrictor for DIY PTFE Line Upgrade.
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Subaru EJ20 EJ25 Turbo Oil Feed Inlet Fitting | -4AN | TD04L TD05H VF-Series

Subaru EJ20 EJ25 Turbo Oil Feed Inlet Fitting | -4AN | TD04L TD05H VF-Series

$59.15 USD
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Technical Description

Precision oil control starts at the inlet. The Subaru EJ20 and EJ25 engines produce high oil pressure that can easily overwhelm internal turbo seals if not properly regulated. This GryphonTek Signature Series Fitting is the professional solution to convert your factory turbo oil inlet to a secure -4AN Flare, while providing the exact restrictor sizing required to safeguard your turbocharger's longevity.

[!] Selection Guide: Match Your Turbo Bearing Type

Turbo Configuration

Restrictor Size

Compatible Models

Journal Bearing

1.8mm Orifice

Mitsubishi: TD04L, TD05H, TF035

IHI RHF5H/RHF55: VF30, VF35, VF37, VF39, VF40, VF43, VF48, VF52.

Ball Bearing

1.0mm Orifice

IHI RHF5HB: VF22, VF23, VF24, VF28, VF29, VF34, VF36.

GryphonTek Signature Engineering

  • DIY Braided Line Essential: The mandatory foundation for any enthusiast upgrading to -4AN braided PTFE oil lines. This fitting bridges the gap between the factory turbocharger port and high-performance motorsport plumbing.
  • Precision Pressure Regulation: Features an integrated restrictor (1.0mm or 1.8mm) specifically calibrated to prevent oil blow-by and the resulting Blue Smoke, while ensuring optimal bearing lubrication.
  • -4AN Conversion Foundation: Replaces the restrictive and leak-prone factory banjo bolt setup with a secure -4AN flare (JIC 37°), enabling a seamless, professional-grade system layout.
  • Zero-Leak Sealing: Each kit includes copper crush washers, ensuring a professional, high-pressure seal that survives extreme heat cycles.

Specifications & Data

Vehicle Compatibility +

• Make: Subaru
• Engine: 2.0L / 2.5L EJ20, EJ25 (EJ205, EJ207, EJ255, EJ257)
• Models: WRX, STI, Forester XT, Liberty GT, Legacy GT

Kit Included +

• -4AN Restrictor Fitting (Choice of Adapter or Banjo Bolt)
• Banjo Eye (If Banjo option selected)
• Copper Crush Washers

Product Specifications +

• Material: Electroplated Mild Steel (Anti-Corrosion)
• Outlet Size: -4AN Male Flare (7/16-20 JIC)
• Function: Regulates turbo oil flow and enables PTFE line conversion
• Benefit: Essential for DIY upgrades; prevents seal blow-by
• Installation: Direct bolt-on to turbocharger oil inlet port

Why Upgrade / Why Choose +

The Subaru Boxer engine is notorious for its high-vibration and high-heat environment. Transitioning from failure-prone rigid factory pipes to a Flexible Braided PTFE system is the single most effective reliability upgrade for the EJ platform. However, this conversion requires a precise interface point.

The GryphonTek Precision Fitting is that interface. By providing a standardized -4AN male flare, it allows DIYers and professional builders to bypass the limitations of OEM hardware. Whether you are solving a "blue smoke" issue caused by over-oiling or building a high-performance track car, this fitting ensures your turbo receives the exact flow management it demands. It is the "Missing Link" for any professional EJ oiling system upgrade.

Support & Logistics

Shipping & Global Export +

Proudly exported to 75+ countries. All orders are dispatched via DHL Express, FedEx, or EMS from our Taiwan hub.

  • AU / USA: 3-5 Business Days.
  • Rest of World: 5-12 Business Days.
  • Tracking: End-to-end tracking number provided within 24H.
Import Duties & Taxes +

We’ve optimized our tax process for core markets to ensure zero hidden fees:

USA MARKET

All-inclusive pricing. No hidden duties or extra fees at delivery.

AUSTRALIA

Orders under AUD 1,000 are typically tax-free. No GST surprises.

*Other Countries: Import duties are determined by local customs and are the buyer's responsibility.

30-Day Returns & Warranty +

30-Day Returns: Return or exchange within 30 days of delivery. (Shipping at buyer's expense).

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

GryphonTek Engineering — Precision Fitment. Global Delivery.