Confirm the exact configuration
Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.

Festo
The Festo part number 4491 is an industrial component featuring an external thread M5 for pneumatic connection 1 and a barbed fitting with an inside diameter of 3 mm and nut for pneumatic connection 2. This RoHS-compliant unit operates with compressed air as per ISO 8573-1:2010 [7:-:-], and operation with oil lubrication is possible and required for further use. Maritime classification is detailed in the certificate. Submit the exact part number, quantity, and application requirements to receive a formal quotation.
Industrial and obsolete parts are priced per enquiry: the final price depends on available stock, condition, quantity, and your delivery destination, so a fixed list price would be misleading. Request a quote and we confirm current pricing, lead time, and sourcing options — including hard-to-find and discontinued Festo references — within one business day.
For a faster response, include quantity, condition, and delivery destination.
Verified configuration
Engineering context
Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.
Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.
Our sourcing response is prepared against Festo 4491. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.