Oster Blender Jar Bottom Cap - OS-055

Oster Blender Jar Bottom Cap - OS-055

Restore the blender jar base connection with this spec-match replacement Oster Blender Jar Bottom Cap - OS-055. This bottom cap secures the blade assembly to the blender jar so the jar can seal properly and lock onto the blender base.

OS-055 is a blender jar bottom screw cap used on many Oster and Osterizer blender jars that use the black plastic bottom cap style. It holds the blade assembly and sealing gasket in place at the bottom of the jar.

Compatibility: Fits many Oster, Osterizer, and Oster Kitchen Center blender jars that use a plastic bottom cap. Does not fit jars that require a metal bottom cap.

Please confirm fitment with your appliance model number before ordering.

Is it time to replace?

• Common Symptoms: Jar leaks at the bottom, bottom cap is cracked, threads are worn, or blade assembly will not stay tight.
• Visible/Sensory Cues: Cracked plastic, stripped threads, loose blade assembly, or seepage around the jar base.

Pro Tip: Transfer only serviceable blade and gasket components. Replace the gasket if it is flattened, cracked, or no longer seals tightly.

Technical Specifications