Description
Flex Technologies 90° preformed silicone coolant hose, 1-1/4″ (1.25″) inside diameter, blue, with 10″ legs measured from the centerline of the bend. Five-ply silicone with polyester-fabric reinforcement, rated for engine-coolant service from -65°F to 350°F continuous.
Specifications
| Manufacturer | Flex Technologies |
|---|---|
| Part Type | 90° Preformed Silicone Coolant Hose |
| Inside Diameter | 1-1/4″ (1.25″) |
| Wall Thickness | 0.18″–0.23″ |
| Leg Length | 10″ from centerline |
| Burst Pressure | 277 psi |
| Color | Blue |
| Construction | 5-Ply Silicone, Polyester Fabric Reinforced |
| Temperature Range | -65°F to 350°F Continuous |
| Standards | SAE J20 R1 Class A, TMC RP303B Class I, Mil-Spec A-A-52426 |
| Resistance | Ozone and oil-splash resistant |
Applications
Preformed silicone coolant elbows are used to connect 1-1/4″ coolant ports where a hard bend is required and rubber EPDM hose would kink:
- Heavy-duty truck engines (Freightliner, Kenworth, Peterbilt, Volvo, Mack, International)
- School bus, transit bus, and motorcoach cooling systems
- Marine inboard cooling and exhaust elbow applications
- Construction, agricultural, and industrial diesel equipment
- Coolant pump, EGR cooler, turbo coolant return, and heater-core plumbing
Verify inside diameter, length, and hose orientation before installation. Use clamps rated for silicone hose; cut clean and square.









