Stoney Racing MX5NA-0014 Silicone Coolant & Breather Hose Kit – Mazda MX5 MK1 NA 1.8

The Stoney Racing MX5NA-0014 is a complete silicone replacement for the coolant and breather hoses on the Mazda MX5 MK1 (NA) 1.8, 1994–1998.

The kit replaces 14 hoses in the engine bay, covering the radiator, heater matrix, thermostat, expansion tank, oil cooler and breather system in one go. Each hose is built from 4-ply silicone with 3-ply polyester reinforcement, so it will not perish, swell or crack like ageing rubber hoses.

It is available in 9 colours and can be ordered with a full set of spring, stainless worm-drive or stainless T-bolt clamps, or without clamps if you plan to reuse your originals.

Key Features

• Direct-fit replacement for 14 coolant and breather hoses
• Fits all Mazda MX5 MK1 NA 1.8 models, 1994–1998
• Manual and automatic, RHD and LHD
• 4-ply silicone with 3-ply polyester reinforcement
• Working pressure over 7 bar, burst pressure over 10 bar
• Temperature range −50°C to 180°C
• Choice of 9 colours
• Optional full clamp kit in three styles
• 3-year manufacturer warranty

Specifications

Hoses Included

• Upper radiator inlet hose
• Lower radiator outlet to hard pipe hose
• Lower radiator hard pipe to block hose
• Heater matrix inlet hose
• Heater matrix outlet hose
• Thermostat bypass hose
• Thermostat housing to throttle body hose
• Radiator to expansion tank hose
• Expansion tank overflow hose
• Cam cover to intake breather hose
• PCV to inlet manifold breather hose
• IACV breather hose
• Oil cooler coolant feed hose
• Oil cooler coolant return hose

Clamp Options

Black Spring Clips are the type most manufacturers use. They give the most even clamping pressure and are generally the best choice for coolant hoses, although being mild steel they can show surface rust over time.

Stainless Worm-Drive clamps are fully stainless, so they will not rust, and they are easier to fit in tight spaces. A good choice if engine bay appearance matters.

Stainless T-Bolt clamps are the heaviest-duty option, ideal where maximum clamping force is wanted.

None lets you reuse your existing clamps. These hoses are slightly thicker than standard, so some original clamps may be too small.

Important Fitting Information

• Some coolants are not compatible with silicone hoses. Check your coolant before fitting.
• The kit includes the one-piece cam cover breather hose used on later cars. On earlier cars with two hoses and a metal crossover pipe, either remove the pipe and use the one-piece hose, or trim the hose into two and keep the pipe.
• Clamp kits include two extra clamps for the trimmed breather hose.
• Use washing-up liquid or a silicone-based lubricant when fitting. Do not use oil-based lubricants.

What's in the Box?

• 14 × Stoney Racing reinforced silicone hoses in your chosen colour
• Full clamp set in your chosen style (if selected)

Frequently Asked Questions

Will this kit fit my MX5 1.6?

No. The MX5NA-0014 is for the 1.8 BP-ZE engine only. The 1.6 uses different hoses and has its own kit.

Does it fit automatic and left-hand-drive cars?

Yes. It fits manual and automatic models in both RHD and LHD.

My car has the earlier two-piece breather with a metal pipe. Will it still fit?

Yes. You can either remove the metal pipe and use the one-piece hose, or cut the hose to make two shorter hoses and keep the pipe. Use a sharp new blade and leave enough overlap to clamp onto the pipe.

Which clamps should I choose?

Spring clips give the most even clamping force for coolant hoses. Stainless worm-drive clamps will not rust and are easier to fit. T-bolt clamps are the strongest option.

Can I reuse my original clamps?

Often, yes. However, these hoses are slightly thicker than the originals, so some factory clamps may be too small.

Is my coolant compatible?

Most coolants are fine, but some types are not compatible with silicone. Check your coolant before fitting.

What warranty do I get?

Stoney Racing silicone hoses carry a 3-year warranty.