Window balancer 26-5

Hello. I am confident we can help replace this channel balance, but that stamp is not an identifier. It just tells us the balance's strength. Please remove your old balance and send us clear photos of the nylon attachments at both ends. See the videos I listed on this page for further guidance.

Thanks for these photos. This looks like either an S380-27 or S385-27 Channel Balance, depending on the shoe depth. See below. Measure your old balance's shoe depth to see what matches best. For a stamp option choose 2650.

Comparison of the S378, S380 and S385 balance shoes.