Subaru EJ20 EJ25 Complete Turbo Oil Feed & Return Line Kit | TD04L TD05H VF-Series

This complete turbo oil feed and return line kit is designed for turbocharged Subaru EJ20 and EJ25 engines using stock-location TD04L, TD05H or supported IHI VF-Series turbochargers. It replaces both the pressurised turbo oil feed path and the gravity-return components in one matched kit.

Some factory Subaru turbo oil supply fittings contain a small mesh screen that may restrict oil flow if contaminated, while the original oil drain hose can harden, crack or seep after repeated heat cycles. This kit converts the feed side to a flexible -4AN PTFE braided line and replaces the return side with an electro-black steel drain pipe and reinforced NBR hose.

Choose the Correct Configuration

Select the engine-side oil feed configuration and turbo bearing type that match the installed engine and turbocharger:

• Non-AVCS: For engines using the corresponding direct turbo oil feed arrangement.
• AVCS: Includes the required T-fitting and secondary oil line for the applicable AVCS oil feed layout.
• TD04L / TD05H: Supplied with a 1.8 mm turbo-side restrictor fitting.
• IHI RHF5H / RHF55 Journal Bearing: Supplied with a 1.8 mm restrictor fitting.
• IHI RHF5HB Ball Bearing: Supplied with a 1.0 mm restrictor fitting.

Important: Select the turbo option by the exact turbo model and bearing system, not by EJ20 or EJ25 engine size alone. AVCS equipment can also vary by engine code, model year, market and engine conversion history.

Key Features

• Complete turbo oil feed and gravity-return replacement for supported stock-location installations
• -4AN PTFE oil feed line with stainless steel outer braid
• Electro-black steel drain pipe with reinforced oil-resistant NBR hose
• AVCS and Non-AVCS configurations with turbo-specific 1.0 mm or 1.8 mm restrictor fittings

Installation Notes

Inspect and clean the engine oil supply path before installation, especially when replacing a failed or rebuilt turbocharger. Keep the oil drain path free from sharp bends or collapsed hose sections, prime the turbo before the first start, and inspect every connection for leaks after the engine reaches operating temperature.

This kit is designed for supported stock-location TD04L, TD05H and IHI VF-Series installations. It is not intended for rotated turbo setups or Garrett GT28R / GT30R bolt-on conversions.

Need help confirming your engine and turbo configuration? View the Subaru EJ20 / EJ25 Turbo Oil Line Fitment Guide.