Mazda Mx5 MK1 NA 1.8 Silicone Coolant & Breather Hose Kit

£83.95 - £116.95 (Inc. VAT)
£69.96 - £97.46 (Ex. VAT)
*** International customers (incl. Channel Islands) will only pay the ex. VAT price, but customs charges may be payable to your country on import. Click here for more info.
(6 reviews) Write a Review
1.64 KGS

Note: Some types of coolant are not compatible with silicone hoses. Please click here to download our Important Fitting Notes before buying and fitting silicone hoses.

This high quality reinforced silicone hose kit replaces 14 coolant and breather hoses in the engine bay listed below. The hoses fit all Mx5 MK1 1.8 models.

  1. Upper Radiator Inlet Hose
  2. Lower Radiator Outlet to Hard Pipe Hose
  3. Lower Radiator Hard Pipe to Block Hose
  4. Heater Matrix Inlet Hose
  5. Heater Matrix Outlet Hose
  6. Thermostat Bypass Hose
  7. Thermostat Housing to Throttle Body Hose
  8. Radiator to Expansion Tank Hose
  9. Expansion Tank Overflow Hose
  10. Cam Cover to Intake Breather Hose*
  11. PCV to Inlet Manifold Breather Hose
  12. IACV Breather Hose
  13. Oil Cooler Coolant Hose
  14. Oil Cooler Coolant Return Hose

* The kit includes the one piece cam cover to intake breather hose found on later models. If you have the earlier model with two hoses and a metal breather pipe running across the front of the engine you can either unbolt the metal pipe and use the longer hose, or cut a section out of the middle of the hose to give you the two shorter hoses and keep the metal pipe. The hose can be cut easily with a stanley knife using a new blade, ensuring you leave enough overlap to clamp the hoses to the metal breather pipe. The optional clamp kit includes two additional clamps for this purpose.

Hose Clamps:

The kit is available with a full set of hose clamps using the options above. The three types of clamp we offer are shown below, but not all options will appear for some kits due to size limitations:

Stoney Racing Stainless Steel Worm-Drive Clamps, Black Coated Spring Clamps and Stainless Steel T-Bolt Clamps

Spring clamps are the most commonly used type by vehicle manufacturers. They provide excellent evenly distributed clamping force and are generally the best option for clamping coolant hoses, but they can be fiddly to fit/remove, and being mild steel they are more prone to surface rust over time. Whilst this won't affect the performance or lifespan of the clamp some customers prefer our stainless steel options below which tend to look better and still perform as they should.

Worm-Drive clamps have slightly less evenly distributed clamping force as the Spring type clamps, but they are still a good quality clamp and usually easier to fit/remove in the tight confines of an engine bay. Being 100% stainless steel they do not rust, so we recommend this type of clamp if you are concerned about the appearance of your engine bay.

T-Bolt clamps are the most heavy duty clamps we supply, and are also 100% stainless steel to prevent rust. However they are much more expensive and, like the Worm-Drive clamps provide a slightly less evenly distributed clamping force than the Spring clamps. For this reason we recommend using them for Turbo applications (intercooler/intake hoses) where high boost can cause hose blow-off's and the additional clamping force is useful. Some customers like to use T-Bolt clamps for all hoses on their vehicle however so we offer them as an option for most of our kits.

For some vehicles the original clamps can be reused so we also offer our kits without clamps, but please be aware our silicone hoses are slightly thicker than the standard hoses so in some cases the original clamps may be too small.


  • Application: Mazda Mx5/Miata/Eunos NA (MK1) Chassis '94-'98 | 1.8 BP-ZE Engine | Manual & Automatic Transmissions | RHD & LHD Models
  • Construction: ~4.5mm 4-ply silicone with 3-ply polyester reinforcing
  • Max Operating Pressure: >7bar
  • Burst Pressure: >10bar
  • Operating Temperature range: -50°c to 180°c
  • Warranty: 3 Years (UK based)

6 Reviews Hide Reviews Show Reviews

  • 5
    Matte Black Hoses & Worm Drive Clamps

    Posted by Oliver Burden on 23rd Jan 2024

    Very impressed with these, understated and classy option for those of us that want a more subtle set of hoses. The matt black variant also has no logos.
    All hoses fit well and didn't need any trimming.

    Worm drive clamps are of good quality and tightened up well without jumping teeth.
    Good product by Stoney.

  • 5

    Posted by Unknown on 6th Jan 2024

    I’m so chuffed with these! They are such high quality, look amazing and are a steal for the price :)

  • 5

    Posted by Ben Richardson on 10th Feb 2022

    A very good quality kit of hoses with good instructions. Swiftly delivered. Highly recommended.

  • 5
    NA mx5 1.8 silicone hose kit

    Posted by Nathan Davies on 2nd Feb 2021

    Whilst I haven't had a chance to fit the hose kit yet (the rest of the car is still in pieces!) I can recommend stoney racing based on their customer service alone!
    I'd been waiting for a kit to turn up for ages so was pleased when I got an email notification saying kits were back in stock, ordered that day and the kit turned up within 2 days, it doesn't get much better than that!

  • 5
    Mazda MK1 1.8 Coolant and Vacuum Hose Set

    Posted by Lee on 2nd Sep 2020

    Very good quality hoses and look the part (I went for the Matt black ones very subtle)
    Also opted for the stainless tbolt clamps which are definitely worth the extra price and will outperform and outlast the regular clamps