Stoney Racing
Land Rover Discovery 300TDI Silicone Crankcase Breather Hose Kit
Land Rover Discovery 300TDI Silicone Crankcase Breather Hose Kit
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Stoney Racing DIS300-0004 Silicone Crankcase Breather Hose Kit – Land Rover Discovery 300TDI
The Stoney Racing DIS300-0004 is a silicone replacement for the crankcase breather hoses on the Land Rover Discovery 300TDI, 1994–1998.
The kit replaces the 3 crankcase breather hoses, including the lower breather box drain hose. 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 8 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 3 breather hoses
- Fits all Discovery MK1 300TDI 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 8 colours
- Optional full clamp kit in 3 styles
- 3-year manufacturer warranty
Specifications
| Specification Details | |
|---|---|
| Brand | Stoney Racing |
| Product Code | DIS300-0004 |
| Vehicle | Land Rover Discovery MK1 300TDI |
| Model Years | 1994–1998 |
| Engine | 2.5 300TDI |
| Transmission | Manual and automatic |
| Hoses in Kit | 3 |
| Construction | Approx. 4.5mm wall, 4-ply silicone, 3-ply polyester reinforcement |
| Working Pressure | Over 7 bar |
| Burst Pressure | Over 10 bar |
| Temperature Range | −50°C to 180°C |
| Colours | Blue, Red, Black, Matt Black, Green, Yellow, Purple, Orange |
| Warranty | 3 years |
Hoses Included
- Air intake breather hose
- Crankcase to engine side plate breather hose
- Lower breather box 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
- Not suitable for carrying fuel or oil.
- Use washing-up liquid to lubricate the hoses when fitting. Never use WD40 or any oil-based lubricant.
- Always dilute coolant with de-ionised water, never tap water, and never mix coolant types.
What's in the Box?
- 3 × Stoney Racing reinforced silicone hoses in your chosen colour
- Full clamp set in your chosen style (if selected)
Frequently Asked Questions
Does it fit left-hand-drive Discoveries?
Yes. It fits all 300TDI Discovery models.
Why are some colours on pre-order?
Stoney Racing makes some colour and clamp combinations to order. These are marked as pre-order and dispatched in around 3–6 weeks.
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.
What warranty do I get?
Stoney Racing silicone hoses carry a 3-year warranty.
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