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Dayco 5080550 Heavy-Duty Poly-Rib Serpentine Belt 8-Rib 55-Inch

(BMW X5 2014-16, M3 2015-16, X3 2011-15, 335i 2012-15, 535i 2011-16, 535i xDrive 2011-13, 740i 2013-15, M4 2015-16, 335i xDrive 2012-15, X4 2015 + 15 more models)

Part of: Dayco Heavy Duty Poly Rib Serpentine Belt

Other options in this family: Dayco 5080795 Dayco 5081325 Dayco 5081373 Dayco 5080925 Dayco 5080933

Manufacturer

Picture for manufacturer Dayco

Part Number

5080550
8 reviews
Sale Price

$41.31

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The Dayco 5080550 is a heavy-duty poly-rib serpentine belt designed for reliable power transmission on multiple-accessory drive systems in trucks, commercial vehicles, and heavy-duty diesel applications. This 8-rib K-section belt features a 55-inch effective length and meets stringent SAE J1459 and SAE J2432 specifications for demanding automotive applications.

Key Features:

  • EPDM rubber construction with aramid fiber reinforcement for exceptional strength and durability
  • Extreme temperature resistance handles high under-hood heat and ozone contamination
  • Highly fiber-loaded compound maximizes belt life and load-carrying capacity
  • Specially formulated treated cord ensures length and tension stability throughout the belt's service life
  • Straight rib profile with standard rib depth for optimal pulley engagement
  • Minimizes pulley misalignment noise for quieter operation

This belt is engineered for heavy-duty diesel engines and high-performance applications where reliability is critical. Cross-reference numbers include K080550HD, 4080550, 8K550, 550K8, and BMW 11.28.7.628.661. Proudly manufactured to OE specifications for professional installers and demanding fleet applications.

Products specifications

Fits

BMW X5 2014-16, M3 2015-16, X3 2011-15, 335i 2012-15, 535i 2011-16, 535i xDrive 2011-13, 740i 2013-15, M4 2015-16, 335i xDrive 2012-15, X4 2015, 435i 2014-16, 640i Gran Coupe 2013-16, 740Li 2013-15, M235i 2014-15, 640i 2012-16 + 10 more models

Belt Length (in)

55.00 in.

Belt Length (mm)

1397.00mm

Belt Style

Serpentine

Belt Width (in)

1.100 in.

Belt Width (mm)

27.94mm

Number of Belt Ribs

8

Quantity

Sold individually.

this is my new home... very cool site, beat summit and jegs by $20 to $30

It took exactly a week for the part to be shipped because the part came directly from the supplier. But the price was the lowest around.

Easy!

I just received my order 7260 very quickly and it was as I had ordered............very easy to order and would do business with them again and I also will recommend them to others.

Better prices and even better service. Will do business with again.

All Good

Great communication, lowest price I could find anywhere, and quick shipping with a tracking number. What more could you ask for. 2nd time dealing with them and still impressed! order# 6935

They had exactly what I needed and the cheapest price i found anywhere.

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