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Mazda MX-5 Miata NA/NB IHI VJ35 Complete Turbo Oil Feed & Return Line Kit

Mazda MX-5 Miata NA/NB IHI VJ35 Complete Turbo Oil Feed & Return Line Kit

Regular price $112.25 USD
Regular price Sale price $112.25 USD
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Technical Description

This complete turbo oil feed and return line kit is designed for Mazda MX-5 Miata NA (MK1) and NB (MK2/MK2.5) models being converted from naturally aspirated to turbo using the IHI RHF5 VJ35 turbocharger. It combines the pressurized oil feed and gravity oil drain systems required to connect the VJ35 to the B6 or BP engine.

The -4AN PTFE stainless-braided oil feed line connects the engine oil source to a VJ35-specific fitting with a 1.8 mm restrictor. On the return side, a reinforced 3/4-inch NBR hose connects the billet VJ35 drain flange to the supplied oil-pan return fitting.

The oil drain operates by gravity and must maintain a continuous downward route from the turbo center housing to the oil pan. Installation requires modification of the oil pan for the supplied return fitting. Confirm the turbo orientation, manifold position, oil-pan fitting location, and available hose clearance before installation.

Key Features

  • Complete turbo oil plumbing: Includes both the pressurized oil feed and gravity oil return systems.
  • Application specific engine connection: Configured for Early NA 1.6L, Late NA 1.8L, or NB 1.8L oil-feed arrangements.
  • VJ35 specific oil feed: Uses a -4AN PTFE braided line with a supplied 1.8 mm turbo inlet restrictor.
  • High-flow gravity return: Uses a VJ35 specific billet drain flange and reinforced 3/4-inch NBR hose.

Not sure which application fits your build? View the Mazda Miata NA/NB Turbo Oil & Water Line Fitment Guide before ordering.

Specifications & Data

Kit Included +

• -4AN PTFE stainless-braided turbo oil feed line
• IHI VJ35 specific 1.8 mm oil inlet restrictor fitting
• Application specific engine side oil feed fitting
• Reinforced 3/4-inch NBR turbo oil drain hose
• IHI VJ35 specific 6061-T6 billet aluminum drain flange
• Interface N-8092 non-asbestos drain gasket
• Oil-pan return fitting
• Required hose clamps, mounting bolts, adapters, and sealing washers

Vehicle Compatibility +

• Make: Mazda
• Models: Miata / MX-5 MK1 (NA), MK2/MK2.5 (NB)
• Engines: 1.6L (B6) / 1.8L (BP) Naturally Aspirated to Turbo conversion
• Year: 1989–2005

Turbo Compatibility +

• Turbo: IHI RHF5 VJ35 (Mazdaspeed Miata Factory Turbo)

Product Specifications +

• Included Systems: Turbo oil feed and gravity oil return
• Oil Feed Line Size: -4AN
• Oil Feed Hose Material: PTFE core with 304 stainless steel braid
• Oil Restrictor Size: 1.8 mm
• Oil Drain Hose Size: 3/4 inch
• Oil Drain Hose Material: Reinforced oil-resistant NBR
• Drain Flange Material: 6061-T6 billet aluminum
• Drain Flange Application: IHI RHF5 VJ35
• Drain Gasket: Interface N-8092 non-asbestos gasket
• Engine Side Return Connection: Supplied oil-pan return fitting
• Installation Requirement: Oil-pan drilling and tapping required
• Drain Routing Requirement: Continuous downward path from the turbo to the oil pan

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 48H.
Import Duties & Taxes +

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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: All import duties and carrier processing fees 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.