FLEXTECH Elbow Reducer: 3 1/2 in_4 in Hose Inside Dia., 6 in Hose Lg, Blue, Silicone

This FLEXTECH 90° reducing elbow connects 3 1/2 in to 4 in heater hoses in engine cooling systems, turbocharger lines, and industrial hot-water circuits. Its silicone construction handles temperatures from -65° to 350°F, making it suitable for heavy-duty trucks, buses, and off-highway equipment.

The FLEXTECH R90-350/400 is a blue silicone SAE J20 90° reducing elbow heater hose. It has a 3 1/2 in to 4 in hose inside diameter, 6 in hose length, and a temperature range of -65° to 350°F. Both tube and cover are silicone, meeting SAE J20 standards for coolant resistance.

3G Electric supplies FLEXTECH silicone heater hoses worldwide. As a global industrial sourcing partner, we handle logistics, customs clearance, and delivery to your facility. Contact us for a quote on the R90-350/400 or other FLEXTECH hose configurations.

Ensure the hose ends and mating fittings are clean and dry. Apply a silicone-compatible lubricant to ease assembly. Slide the hose fully onto each fitting, ensuring the reducing end matches the smaller diameter. Use constant-torque clamps, tightening to manufacturer specs. Avoid overtightening to prevent silicone damage.