Is this item a genuine Oster replacement part?

I spoke with Oster on this. If it comes inscribed "Oster" on the part, then it is Oster, if not it is a knock off. the knockoffs will fit but may have non food grade lubricant and less robust seal meaning they will leak some bad stuff into your smoothie or blended drink. Just make sure what you get is etched with "Oster" and if not send it back and insist on shipping costs for false product. there are several sellers here and some maybe selling non oem knockoffs

will this fit my Osterizer 10 speed blender No.869-18S?

It works very well on my very old 841-J 10 speed. I believe there are only two types of blades for Oster blenders. If the picture matches your blades, the chances are very good it will work OK. Otherwise you can buy it at ACE for $17 and get an easy return (like I did, before I tried Amazon).

I got a knock off from Aza Mart which leaks like there's no tomorrow. . Is "Oster" inscribed on the blade base?

This blade fits perfectly and does not leak. I did not see an inscription.

How can I find the model # on my Oster blender and I need the ice blade replacement

I have a John Oster Mfg. Co. Osterizer, Model 10, made in Milwaukee or Racine, Wisconsin, Serial No. 891211. How can I find out when it was manufactured?

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Description

❄️ Crush Ice Like a Pro, Blend Like a Boss!

VERSATILE POWER - Designed for all blending tasks, from smoothies to ice crushing, powered by 220V corded electric.
REVIVE YOUR BLENDER - Extend the life of your Oster blender and keep it running like new.
LEAK PROOF PERFORMANCE - Includes a sealing ring to keep your blending mess-free and efficient.
SEAMLESS COMPATIBILITY - Fits most Oster 5 & 6 cup glass or plastic jars—upgrade without hassle.
DURABILITY MEETS PRECISION - Engineered with premium stainless steel for long-lasting, flawless ice crushing.

The Oster Blending Blade with Sealing Ring is a genuine, heavy-duty stainless steel replacement blade designed to fit most Oster 5 & 6 cup jars. It includes a sealing ring for leak-proof blending and is optimized for perfectly crushed ice, extending the life and performance of your Oster blender.

Specifications

Brand	Oster
Colour	Stainless Steel
Capacity	28 g
Style	modern
Recommended Uses For Product	Ice Crush
Power Source	Corded Electric
Voltage	220 Volts
Material Type Free	BPA Free
Blade Material	Stainless Steel
UPC	034264487949 034264025677 885244622894 885854836636 732233441991 804482140953 885629008329 885371349152 885623847153 885732867592 085081973443 609207304234 885818201630 885931280444 730337113011 788536205983 788536205853 642078039706 885984611127 762578362866
Global Trade Identification Number	00034264025677
Manufacturer	Jarden Consumer Solutions
Color	Stainless Steel
Shipping Weight	0.07 Kilograms
Item Model Number	4961-011
Item Part Number	4961
Is Assembly Required	No
Primary material	Stainless Steel
Number of Pieces	1

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