• Turbo Water Line Kit Mazda MX5 Miata MK1 with BorgWarner EFR Series
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Mazda MX-5 Miata NA/NB BorgWarner EFR Turbo Water Line Kit

Mazda MX-5 Miata NA/NB BorgWarner EFR Turbo Water Line Kit

$90.65 USD
$90.65 USD
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Technical Description

Complete turbo coolant line kit for Mazda MX-5 Miata NA and NB models being converted from naturally aspirated to turbo with a BorgWarner EFR 6258 or EFR 6758 turbocharger.

The kit connects the Miata thermostat case and mixing manifold coolant connections to the water cooled EFR bearing housing. Application specific reinforced NBR hoses are supplied to match the 8 mm coolant connections used by NA models or the 10 mm connections used by NB models.

Key Features

  • EFR Specific Water Port Fittings: Configured for the coolant ports used by BorgWarner EFR 6258 and 6758 bearing housings.
  • Application Specific Hose Size: Choose the 8 mm / 5/16-inch NA kit or the 10 mm / 3/8-inch NB kit to match the vehicle side coolant connections.
  • Reinforced NBR Coolant Hoses: Flexible hoses simplify routing between the engine cooling circuit and turbocharger while accommodating normal engine movement.
  • Required Connection Hardware: Includes coolant barb adapters, copper sealing washers, hose clamps, and the related installation hardware.

View the Mazda Miata NA/NB Turbo Oil & Water Line Fitment Guide →

Specifications & Data

Kit Included +

• Reinforced NBR coolant hoses
• BorgWarner EFR specific water fittings
• Vehicle side coolant barb adapters
• Copper sealing washers
• Hose clamps
• Installation hardware

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

Product Specifications +

• System Type: Turbocharger coolant / water line kit
• Hose Material: Reinforced NBR
• Fitting Material: Mild steel with anti corrosion finish
• NA Hose Size: 8 mm / 5/16"
• NB Hose Size: 10 mm / 3/8"
• Turbo Side Sealing Method: Copper crush washers
• Vehicle Side Connections: Thermostat case and mixing manifold

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.