Description
Flex Technologies 4-3/4″ ID black silicone coolant hose, 36″ straight cut. Built from 5-ply silicone with polyester fabric reinforcement, this heavy-duty coolant hose is rated for -65°F to 350°F continuous service and meets or exceeds SAE J20 R1, RP 303B Class 1, and Mil-Spec A-A-52426. Common upgrade or replacement for HD diesel charge-air, radiator, and intercooler plumbing.
Specifications
| Manufacturer | Flex Technologies |
|---|---|
| Part Number | C40B-475-36 |
| Part Type | Straight Silicone Coolant Hose |
| Inner Diameter | 4-3/4 in (4.75 in) |
| Length | 36 in (3 ft) |
| Wall Thickness | 0.20 in |
| Burst Pressure | 62 psi |
| Material | 5-ply silicone, polyester fabric reinforcement |
| Temperature Range | -65°F to 350°F continuous |
| Color | Black |
| Standards | SAE J20 R1, RP 303B Class 1, Mil-Spec A-A-52426 |
| Resistance | Ozone and oil-splash resistant |
Applications
This 4-3/4″ ID straight silicone hose is used in heavy-duty diesel cooling and intake plumbing, including:
- Lower and upper radiator hose runs on Class 8 trucks
- Charge-air cooler / intercooler piping
- HVAC and engine coolant return lines on equipment with 4-3/4″ ID nipples
Custom liner (fluorosilicone or fluorocarbon), high-temperature meta-aramid reinforcement, and helical-wire vacuum-resistant builds are available on request from Flex Technologies.
Verify nipple OD, hose run length, and clamp range before ordering.
