Stoney Racing SE3P-0004 Silicone Coolant & Breather Hose Kit – Mazda RX8 231

The Stoney Racing SE3P-0004 is a silicone replacement for the coolant and breather hoses on the Mazda RX8 231, 2003–2008.

The kit replaces 18 coolant and breather hoses in the engine bay, including the main radiator hoses and the heater hoses. 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 7 colours and can be ordered with a full set of stainless worm-drive, spring or stainless T-bolt clamps, or without clamps if you plan to reuse your originals.

Key Features

• Direct-fit replacement for 18 coolant and breather hoses
• Fits manual pre-facelift RX8 231 models, 2003–2008
• Manual transmission, RHD
• 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 7 colours
• Optional full clamp kit in 3 styles
• 3-year manufacturer warranty

Specifications

Hoses Included

• Upper and lower radiator hoses
• Heater matrix hoses
• Engine coolant hoses
• Breather hoses
• Brake servo vacuum hose (RHD)

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.
• Supplied for right-hand-drive cars. One brake servo hose is different on LHD cars; contact us before ordering for an LHD car.
• Use washing-up liquid or a silicone-based lubricant when fitting. Do not use oil-based lubricants.

What's in the Box?

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

Frequently Asked Questions

Does it fit the 192 PS model or the facelift?

No. This kit is for the manual 231 PS pre-facelift RX8 only.

Can I use it on a left-hand-drive RX8?

One brake servo hose differs on LHD cars. Contact us before ordering and we can arrange the LHD hose.

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.