• Turbo oil feed line kit for Mazda MX-5 Miata early MK1 with BorgWarner EFR 6258 / 6758 turbo conversion, 4AN PTFE Teflon braided stainless hose, direct oil feed design for EFR turbo.
  • PTFE Teflon stainless braided hose for turbo, heat-resistant and durable
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Mazda MX-5 Miata (NA/NB) BorgWarner EFR 6258 6758 Turbo Oil Feed Line Kit

Mazda MX-5 Miata (NA/NB) BorgWarner EFR 6258 6758 Turbo Oil Feed Line Kit

$82.78 USD
$82.78 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

The elite plumbing foundation for your EFR investment. The BorgWarner EFR series is the pinnacle of turbocharger response, but its unique integrated restrictor system demands a specific plumbing approach. This GryphonTek Signature Series Kit is the professional-grade solution, providing a high-flow, non-restricted path tailored to your Miata’s specific engine year to ensure your EFR ball-bearing cartridge receives the precise oil volume it was engineered to handle.

[!] 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 Adapters

Late NA (MK1)

1994–1997 (1.8L)

Pressure Sensor Port

Precision 1/8 BSPT Tee

NB (MK2 / MK2.5)

1998–2005 (1.8L)

Pressure Sensor Port

Precision 1/8 BSPT Tee
  • EFR Integrated Flow Logic: Features a full-flow -4AN inlet fitting to match the EFR's internal restrictor. This prevents "Double Restriction" (starvation) that occurs when using universal restricted fittings.
  • Year-Specific Integration: Precision adapters bridge factory oil sources to EFR threads, eliminating sourcing guesswork and preventing block thread damage.
  • Extreme Thermal Resilience: Motorsport-grade PTFE braided stainless steel survives the intense radiant heat of the Miata's "Hot Side" without becoming brittle.
  • Harmonic Defense: Flexible architecture absorbs B6/BP engine vibrations, preventing the fatigue cracks common in rigid custom pipes.

Specifications & Data

Kit Included +

• -4AN PTFE Braided Oil Feed Line (Stainless Steel Braid)
• Precision EFR-Specific Non-Restricted Inlet 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: BorgWarner EFR: 6258, 6758, 7163

Product Specifications +

• Line Material: PTFE (Teflon) Core with 304 Stainless Steel Braid
• Flow Logic: Non-Restricted (Optimized for EFR Internal Restrictors)
• Benefit: Ensures maximum bearing stability and eliminates procurement frustration
• Installation: 100% Bolt-on to specified Miata block and EFR 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.