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Mazda MX-5 Miata (NA/NB) Garrett T25 T28 Turbo Oil Feed Line Kit | 1.8mm Restrictor

Mazda MX-5 Miata (NA/NB) Garrett T25 T28 Turbo Oil Feed Line Kit | 1.8mm Restrictor

Regular price $84.73 USD
Regular price Sale price $84.73 USD
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JUNE HOLIDAY SHIPPING UPDATE

Please be advised that June 17 is our final shipping date before the upcoming national holiday break.

June 17 Last Dispatch
June 18-21 No Shipping
June 22 Regular Resumes

Technical support remains active during the holiday period.

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Technical Description

Precision oil control for the classic T-Series conversion. Upgrading your naturally aspirated Miata to a Garrett T25 or T28 journal-bearing turbo is a proven path to reliable power, but managing oil pressure is the single most important factor for turbo longevity. This GryphonTek Signature Series Kit eliminates the sourcing nightmare by providing the exact year-specific block adapter and the calibrated 1.8mm restrictor required to protect your journal bearings from high-pressure blow-by.

[!] Selection Guide: Match Your Chassis Year

Selection

Year / Engine

Oil Feed Source

Included Hardware

Early NA (MK1)

1989–1993 (1.6L)

Exhaust-Side Port

Direct-Fit M10 Adapter

Late NA (MK1)

1994–1997 (1.8L)

Pressure Sensor Port

Precision 1/8 BSPT Sensor Tee

NB (MK2 / MK2.5)

1998–2005 (1.8L)

Pressure Sensor Port

Precision 1/8 BSPT Sensor Tee

  • Precision 1.8mm Metering: Calibrated restrictor prevents journal-bearing flooding, safeguarding internal seals from oil blow-by and the common "Blue Smoke" issues in DIY builds.
  • Anti-Strip Year Integration: Precision adapters bridge factory oil sources to Garrett threads, eliminating sourcing guesswork and preventing permanent block thread damage.
  • Extreme Thermal Resilience: Motorsport-grade PTFE braided stainless steel survives the intense radiant heat of the Miata's "Hot Side" without hardening.
  • Harmonic Defense: Flexible -4AN architecture absorbs B6/BP engine vibrations, eliminating the fatigue cracks common in rigid factory pipes.

Specifications & Data

Kit Included +

• -4AN High-Temp PTFE Braided Oil Feed Line (Stainless Steel Braid)
• Precision T25/T28 Specific 1.8mm Restrictor Fitting
• Year-Specific Block Adapter (M10 or 1/8 BSPT Tee)

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: Garrett T25, T28 Journal Bearing

Product Specifications +

• Line Material: PTFE (Teflon) Core with 304 Stainless Steel Braid
• Restrictor Size: 1.8mm (Optimized for T25/T28 Journal Bearing)
• Benefit: Prevents turbo flooding and eliminates sourcing frustration
• Installation: 100% Bolt-on to specified Miata block and Garrett inlet

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 +

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: 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.