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72mm Pressure Bleeder Cap for MX-5 NA & NB

Suits: Mazda MX-5 NA, NB brake master cylinders (72mm x 3mm reservoir thread)

Bleed your brakes on your own. A pressure bleeder cap that screws straight onto the MX-5 NA and NB brake master reservoir.

  • 72mm x 3mm thread
  • Schrader valve for air or a pressure bleeder
  • Suits Mazda MX-5 NA and NB brake masters
  • Swaps in for the reservoir lid while you bleed

$25.95 AUD

In Stock · Ships Monday

Overview

What it’s for

The cap replaces your reservoir lid while you bleed the brakes, so one person can do the job. It has a Schrader valve you can use two ways:

  • Compressed air: pressurise the reservoir through the valve.
  • Pressure bleeder: remove the valve insert and connect the hose from a pressure unit filled with fluid.

With the system under pressure, open each bleeder in sequence until no air is left in the system.

Will it fit?

It suits Mazda MX-5 NA and NB brake masters. Other masters with the same 72mm x 3mm reservoir thread may also suit. Check your reservoir thread before ordering. Running a Nissan BM series master? You need the 75mm x 3mm bleeder cap.

Specifications

Thread 72mm x 3mm
Valve Schrader
Use with Compressed air or a fluid pressure bleeder
Suits Mazda MX-5 NA, NB brake master reservoirs (72mm x 3mm thread)
  • One-Person Brake Bleeding
  • Clear Tubing = Easy Monitoring
  • May Suit Other Models with 72 x3mm Caps
Free AU shipping over $250
In-stock orders dispatched within 24 hours from Melbourne.
Lifetime warranty
Cylinder body covered for life for the original purchaser. No time limit, no argument.
30-day returns
Faulty part? Free return, full refund. Changed your mind? Full store credit, no fees deducted.
Ships worldwide
International shipping available to most countries. Rates calculated at checkout.
In the box

What's Included

  • 1× 72mm x 3mm pressure bleeder cap
Community

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Product Information

Will it fit your car?

Find your car in the list below and add it to your garage. Every part page then checks it for you.

Fits 2 vehicles across 1 model
Mazda MX-52
NA, NA6CE, NA8C
Mazda MX-5 NA B6-ZE · BP-ZE · 1989–1998
1989–1998
NB
Mazda MX-5 NB B6-ZE · BP-4W · BP-Z3 · BP-4W turbo · 1998–2005
1998–2005
We have only confirmed fitment for the vehicles mentioned under compatibility. If your vehicle is not listed, then we don't know if it fits.
It suits the Mazda MX-5 NA and NB brake master, and other masters with a 72mm x 3mm reservoir thread. Nissan BM series masters (BM44, BM50, BM57) need the 75mm x 3mm cap.
Yes. Remove the Schrader valve insert and connect the hose from your pressure unit filled with fluid.

Our Story

We weren't always HFM.Parts; we were Holford Motors. Our brand's identity was forged not in an office, but on the local circuits in the high-stress world of competitive drifting. Our ultimate testbed was our Nissan S14 Drift car, driven by champion Luke Fink. Pushing that car to its limits exposed a crucial truth: achieving genuine, repeatable performance meant relying on components that simply weren't available affordably on the market.

The HFM.Parts brand was born

We made the commitment to design and manufacture the uncompromising, high-quality performance parts that we, as competitive racers, demanded ourselves. Every component you see is a solution conceived, tested, and proven by us. When you choose HFM.Parts, you are investing in components engineered by racers, for racers, ensuring your vehicle delivers its maximum performance potential.

From Our Customers

Be the first to review this product. Here's what other customers have been saying about our range:

  1. Barry Callanan ✓ Verified
    Sep 22, 2026
    Fits ok.
  2. Sam
    Feb 24, 2025
    Fit perfectly on my S13, with just a little bit of trimming of the knuckle and caliper. Used a set of Infiniti Q60/Q70 rear calipers, exactly the same as 370Z and more readily available. Any of the Akebono calipers with 4101 casting number should work.
  3. Lachlan Reed
    Oct 6, 2024
    Bought this conversion kit for my RWD Stagea running 32GTR sumitomo callipers, everything fit perfectly and as it should, very happy with the quality of the items received.
  4. Tom ✓ Verified
    Aug 12, 2024
    I recently upgraded my Nissan S15 with these brake rotors and caliper adapters, and I am thoroughly impressed with their products and service. The materials used are high-quality, and the fitment and precision of their product was perfect! Originally I just wanted to enhance the aesthetics of the car with bigger brake rotors! But after the install of their front and rear rotor upgrade kits along with fresh brake pads, I noticed a significant improvement in braking power moving from old worn disks to theirs, not to mention better an overall driving experience. The installation instructions provided were clear and easy to follow. Even if you're not a seasoned mechanic like me, you should be able to install these with minimal hassle using their installation video’s! They are great value for money, I highly recommend HFM part’s to anyone looking to upgrade their braking system for better looks and performance!
  5. Blake
    Mar 6, 2024
    This master cylinder did exactly what they said. Direct bolt on. And just works. We tested it in our Endurance v35 and had performed spot on. If your looking for an upgrade for your 25mm master I highly recommend this for a firmer pedal feel.
  6. Blake Morgan ✓ Verified
    Dec 21, 2023
    We are currently running the 2 piece brake discs on our endurance race car and they are doing a great job. The weight saving, cooling, reduced replacement cost and the look are all great points as to us returning for more. The team at HFM are knowledgeable on there product and are commited to working through the intricacies of racing with us. GREAT JOB!!

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HFM.Parts 72mm x 3mm Pressure Bleeder Cap for Mazda MX-5 NA / NB Brake Master Cylinders
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Modifying vehicles is a specialist task and requires the knowledge and experience of competent individuals to be conducted safely.
We recommend this product be installed by a competent person. Instructions are given with every order where available, however, If you would like a copy prior to ordering, you're welcome to contact us

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