Silicone Straight Coupler Hose Black 25mm (1") ID x 50mm Long
Coolant & Radiator Pipework | 3-Ply, 4.5mm Wall, 34mm Outside Diameter | Short Joint, Tight Engine Bays | -60°C to +180°C
Brand: HOSES UK- 25mm (1") ID
- 34mm OD
- 4.5mm wall · 3-ply
- -60°C to +180°C
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RRP:
Price includes VAT
How to measure your pipe
Measure the outside diameter of the pipe or spigot the hose pushes onto, using a ruler or callipers. Choose the hose whose inside diameter (ID) matches that measurement.
Between sizes? Go for the smaller one. Silicone stretches a little to grip, but it can't be clamped down onto a pipe that is too small.
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- Brand
- HOSES UK
- Material
- Silicone Rubber
- Colour
- Black
- Inside diameter
- 25mm (1")
- Outside diameter
- 34mm
- Wall thickness
- 4.5mm
- Reinforcement
- 3-ply polyester
- Length
- 50mm
- Temperature range
- -60°C to +180°C
- Maximum pressure
- 16 bar
About this item
- 📏 25mm (1") ID x 50mm STRAIGHT COUPLER - 25mm internal diameter, 4.5mm wall and 34mm Outside Diameter (OD). The 50mm length makes a short joint for tight engine bays. Push it over two 25mm pipes or spigots of the same size to make a sealed inline joint.
- 🔧 BUILT FOR COOLANT & RADIATOR PIPEWORK - at 25mm bore it suits radiator and heater hoses, coolant rails, water pump and thermostat housing joints, on cars, vans, motorbikes, 4x4s, trucks, tractors, plant and industrial machinery.
- 🌡️ HIGH TEMPERATURE SILICONE -60°C to +180°C - stays flexible through extreme heat and cold and resists ozone, UV and moisture, so it will not harden, crack or perish the way ageing rubber hose does.
- 🛡️ 3-PLY POLYESTER REINFORCED - 3 layers of polyester fabric inside a 4.5mm silicone wall hold the 25mm bore round under boost pressure and vacuum, with a smooth inner surface for clean airflow and coolant flow.
- ⚫ BLACK GLOSS FINISH - a smart black silicone joiner for a tidy engine bay. Cut with a sharp blade for a shorter joint, and secure each end with a hose clip sized for the 34mm Outside Diameter (OD). Also available in blue and red.
Product description
HOSES UK Silicone Straight Coupler Hose
The HOSES UK Silicone Straight Coupler Hose is designed to securely join two straight sections of pipe or hose with a clean, reliable connection. Ideal for coolant, air, turbo and intercooler systems, this coupler provides strength, flexibility and long-term durability in demanding automotive environments.
Manufactured from high-quality reinforced silicone, the straight coupler offers excellent resistance to heat, vibration and ageing. The smooth internal bore supports consistent airflow or coolant transfer, helping to reduce restriction while maintaining a secure, leak-resistant connection when clamped correctly.
Key Features:
- Straight coupler design – Ideal for joining pipework of the same diameter in a direct, inline setup.
- Reinforced silicone construction – Strong, flexible and resistant to splitting or deformation.
- Smooth internal bore – Supports efficient airflow and coolant transfer.
- High temperature resistance – Suitable for demanding engine bay conditions.
- Multiple sizes available – Choose the internal diameter to suit your application.
Typical Applications:
- Radiator and coolant hose systems
- Turbo and intercooler pipework
- Induction and intake setups
- Custom automotive and motorsport builds
What’s Included:
- 1 × HOSES UK Silicone Straight Coupler Hose
Product details
| Brand | HOSES UK |
|---|---|
| Material | Silicone Rubber |
| Colour | Black |
| Inside diameter | 25mm (1") |
| Outside diameter | 34mm |
| Wall thickness | 4.5mm |
| Reinforcement | 3-ply polyester |
| Length | 50mm |
| Temperature range | -60°C to +180°C |
| Maximum pressure | 16 bar |
| Shape | Circular |
| Manufacturer | HOSES UK |