Eight Nine 6AN Return Fuel Line Kit for Mazda MX-5 NB 01-05

From: £233.15 inc. VAT

  • 6AN 8mm Steel Fuel Line Quick Connect Adapter Black × 3

    £16.86 inc. VAT each

    11 in stock

  • 6AN Teflon Stainless Braided Fuel Hose 1m × 3

    £11.23 inc. VAT each
  • Gates Submersible 8mm SAE 30R10 Fuel Hose 30cm

    £29.46 inc. VAT

    2 in stock

  • 6AN Fuel Rail Adapter for Mazda MX-5 × 2

    £17.98 inc. VAT each

    Only 1 left in stock

  • 6AN 90 Degree Teflon Hose Fitting Black × 4

    £14.05 inc. VAT each

    4 in stock

  • 6AN 90 Degree Forged Teflon Hose Fitting Black

    £14.05 inc. VAT

    6 in stock

  • 6AN Straight to 8mm 5/16" Barbed Fitting Black

    £5.34 inc. VAT

    9 in stock

  • 6AN Straight Teflon Hose Fitting Black

    £7.86 inc. VAT

    3 in stock

  • Lisle 5/16in Fuel Line Quick Disconnect Tool

Eight Nine 6AN Return Fuel Line Kit for Mazda MX-5 NB 01-05

The 01-05 Mazda MX-5 has a returnless dead-head style fuel system with a damper on the end of the fuel rail instead of a pressure regulator—which would usually bleed excess fuel off into the tank. Whilst the 01-05 NB has a base fuel pressure of 4.0 Bar, due to the lack of a regulator at the fuel rail each PSI of boost reduces the fuel pressure by the same amount. This means that it is only really possible to run 1.0 Bar or 14.5 PSI of boost pressure before the fuel system should be upgraded to a return style system.

We’ve developed this kit to replace the vent tube that runs from the tank to the charcoal canister which allows us to utilise the connection on the top of the fuel hat to return the excess fuel to the tank. All fuel hose is E10/E85 compatible to ensure it will last the lifetime of the vehicle.

The standard damper is replaced with a 6AN adapter to allow a return line to be taken straight from the end of the rail to the tank. We strongly recommend replacing the whole hard line with 6AN hose. Whilst the hard-line can cope with returning the appropriate amount of fuel at full throttle, it is not large enough to return the required volume of excess fuel at idle, which can cause poor running.

Simply add the fuel pump and fuel pressure regulator—with 6AN barb fittings—of your choice to unlock the horsepower potential of your setup.

Instructions

Kit contents

  • 3 x 6AN to 8mm OEM quick connects
  • 3m 6AN Teflon braided stainless steel
  • 30cm Gates submersible fuel hose
  • 2 x 6AN fuel rail adapter
  • 4 x 6AN 90-degree fittings
  • 1 x 6AN 90-degree forged fitting
  • 1 x 6AN straight fitting
  • 1 x 6AN to 8mm hose barb

Additional information

Brand

Eight Nine

Model

Mk2 (98-05)

6AN 8mm Steel Fuel Line Quick Connect Adapter Black

Weight 0.05 kg
Dimensions 4 × 3 × 2 cm
Brand

BOFI Racing

Model

Mk1 (89-98), Mk2 (98-05), Mk3 (05-15), Mk4 (15-24)

6AN Teflon Stainless Braided Fuel Hose 1m

Weight 0.05 kg
Dimensions 15 × 15 × 5 cm
Brand

BOFI Racing

Gates Submersible 8mm SAE 30R10 Fuel Hose 30cm

Weight 0.060 kg
Dimensions 15 × 12 × 1.5 cm
Brand

Gates

Model

Mk1 (89-98), Mk2 (98-05), Mk3 (05-15), Mk4 (15-24)

6AN Fuel Rail Adapter for Mazda MX-5

Weight 0.05 kg
Dimensions 4 × 3 × 2 cm
Brand

BOFI Racing

Model

Mk1 (89-98), Mk2 (98-05), Mk3 (05-15), Mk4 (15-24)

6AN 90 Degree Teflon Hose Fitting Black

Weight 0.05 kg
Dimensions 4 × 3 × 2 cm
Brand

BOFI Racing

Model

Mk1 (89-98), Mk2 (98-05), Mk3 (05-15), Mk4 (15-24)

6AN 90 Degree Forged Teflon Hose Fitting Black

Weight 0.05 kg
Dimensions 4 × 3 × 2 cm
Brand

BOFI Racing

Model

Mk1 (89-98), Mk2 (98-05), Mk3 (05-15), Mk4 (15-24)

6AN Straight to 8mm 5/16" Barbed Fitting Black

Weight 0.01 kg
Dimensions 4 × 2 × 2 cm
Brand

BOFI Racing

Model

Mk1 (89-98), Mk2 (98-05), Mk3 (05-15), Mk4 (15-24)

6AN Straight Teflon Hose Fitting Black

Weight 0.05 kg
Dimensions 4 × 3 × 2 cm
Brand

BOFI Racing

Model

Mk1 (89-98), Mk2 (98-05), Mk3 (05-15), Mk4 (15-24)

Lisle 5/16in Fuel Line Quick Disconnect Tool

Weight 0.01 kg
Dimensions 16 × 8 × 3 cm
Brand

Lisle

Model

Mk2 (98-05), Mk3 (05-15), Mk4 (15-24)

Warranty information

Warranties cover defects in materials and workmanship only. Warranty is for replacement of a similar product, repair of the original product or refund of the purchase value only and excludes all labour and incurred charges including towing, fitting, inconvenience, and purchases of other manufacturer's products. The warranty is good for the period stated in the additional info tab from the date of purchase. Mileage warranties are for road use only and proof of mileage is required. Products must be installed by an independent experienced professional mechanic and the suspected defect must be present at the outset. The warranty does not cover damage caused by incorrect installation, failure to comply with the maintenance requirements of the vehicle, processing or otherwise changing the product, ordinary wear and tear, or any other external influences. Warranties are invalid if the product is used for racing, rallying, drifting, track days or any other form of motorsport or competition. Please refer to the manufacturer's own warranty documentation for more information.

Making a warranty claim

Proof of purchase receipt showing the date of purchase, proof of mileage at installation, proof of current mileage and invoice of the work undertaken by an independent experienced professional mechanic must be supplied along with the returned products for a warranty claim to be considered. If your vehicle needs to be used whilst your warranty claim is considered replacement parts from the same manufacturer should be purchased through BOFI Racing. In the event of a successful warranty claim, we will refund the card that was originally used to purchase the replacement parts, in full or in part depending on the nature of the claim. BOFI Racing reserves the right to make full or partial compensation at its sole discretion depending on the condition and mileage use of the returned suspect parts. For example, if you have used the part for several thousand miles before a defect is noticed, only partial compensation may be offered.

Make Model Year
Mazda MX-5 II (NB) 2001 - 2005

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