what brand are the bearings?

Just examined the still unused pulley stating Made in USA on box, and yes it is a Chinese (NSK) bearing assembly. In fact on close examination, the Dayco plastic pulley looks a bit rough. Maybe stick with Mopar on this part which should be a lifetime idler pulley.

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89144 Idler Pulley , Black

Product ID: 12977637

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📏Compact 3.7-inch design

⚙️Precision polymer build

🇺🇸Proudly USA-made

Description

⚙️ Keep your engine running smoother, stronger, smarter!

COMPACT YET MIGHTY - 3.7 x 3.7 x 1.3 inches fits seamlessly into your vehicle’s front tension system.
LIGHTWEIGHT EFFICIENCY - At just 3.2 ounces, it reduces unnecessary load for optimal engine performance.
FIRST TO MARKET INNOVATION - Be ahead of the curve with a pioneering tension pulley design.
ENGINEERED FOR PEAK PERFORMANCE - Polymer material ensures durability and smooth operation under pressure.
MADE IN THE USA TRUSTED WORLDWIDE - Crafted domestically for unmatched quality and reliability.

The Dayco 89144 Idler Pulley is a precision-engineered, polymer tension pulley designed for front-position automotive applications. Manufactured in the USA, it offers a compact, lightweight solution (3.2 oz, 3.7x3.7x1.3 inches) that enhances engine belt tension and durability, making it a must-have for reliable vehicle maintenance.

Specifications

Manufacturer	DAYCO
Brand	Dayco
Model	Tension Pulley, Industry Number 89144
Item Weight	3.2 ounces
Product Dimensions	3.7 x 3.7 x 1.3 inches
Item model number	89144
Is Discontinued By Manufacturer	No
Exterior	Molded
Manufacturer Part Number	89144
OEM Part Number	89144
Position	Front

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