Collection: Proflow 180° Silicone U-Bend Couplers

Browse black Proflow 180-degree silicone U-bend couplers for custom air intake and intercooler pipework. The four listings in this collection specify 4-layer polyester-reinforced silicone construction with a 5mm wall thickness.

Sizes and part numbers

• 2.50 inch: PFES106-250B
• 3.00 inch: PFES106-300B
• 3.50 inch: PFES106-350B
• 4.00 inch: PFES106-400B

Planning a silicone return bend

Match the specified internal diameter to the outside diameter of your connecting pipework. Check both end sizes, leg lengths, bend radius and overall dimensions against your available installation space. A 180-degree angle alone does not establish whether a coupler will fit a compact layout.

Select clamps suitable for the hose's outside diameter. Confirm the manufacturer's operating temperature, working pressure and fluid compatibility for the exact part before use; do not treat a burst-pressure figure as a working-pressure rating. For heating or cooling installations, confirm suitability for the intended fluid and operating conditions.