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Gates K121039HD FleetRunner Heavy-Duty Micro-V Serpentine Belt - 12-Rib 104.5

Part of: Gates FleetRunner Heavy-Duty Micro-V Serpentine Belt

Other options in this family: Gates K070835HD Gates K100572HD Gates K061187HD Gates K070786HD Gates K080385HD

Manufacturer

Picture for manufacturer Gates

Part Number

K121039HD
13 reviews
Sale Price

$79.42

In Stock (5)

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Usually delivered within 2 days

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Product Details

The Gates K121039HD FleetRunner Heavy-Duty Micro-V serpentine belt is engineered specifically for fleet applications, heavy-duty trucks, and severe-duty vehicles that demand maximum durability and performance. This 12-rib belt features a 104.5-inch outside length and 1.65-inch top width, making it ideal for high-mileage commercial vehicles including 3/4 and 1-ton pickups.

Advanced EPDM Construction:

  • Patented EPDM rubber compound with distinctive green overcord for easy identification
  • Superior resistance to cracking, wear, and deterioration from ozone, oil, and water-based coolants
  • Peak performance at prolonged extreme operating temperatures
  • Advanced adhesion technology for maximum strength and durability

Heavy-Duty Performance Features:

  • Engineered to reduce fleet downtime and lower cost per mile
  • Superior flexibility, stability, and load-carrying capacity
  • Consistently outperforms competitive heavy-duty serpentine belts
  • Problem-solver design for the toughest accessory drive applications
  • High-modulus polyester cord construction resists stretching

Specifications:

  • Part Number: K121039HD
  • Section: K (12-rib)
  • Outside Length: 104.5 inches (2654mm)
  • Top Width: 1.65 inches (42mm)
  • Material: EPDM Rubber with Polyester Cord
  • Position: Fan and Alternator Accessory Drive

Gates FleetRunner belts deliver unsurpassed belt life in high-idle-time, high-temperature, and abusive operating environments. This belt meets or exceeds OEM specifications and is backed by Gates' reputation for quality and reliability in power transmission solutions.

Products specifications

Number of Ribs

12

OE Comparison Rating

OE Improved (OE+)

Outside Circumference (in)

104.5

Outside Circumference (mm)

2654

Section

K

Top Width (in)

1.647

Top Width (mm)

42

Awesome pricing!!

not till i recieve package

Best price I've seen online and the shipping is extremely fast. I would definitely use this site again for future automobile needs.

Autoplicity gave quick shipping and great status notifications of my order. Products were as advertised. Best prices around. Would definately recommend this company to people.

Quick and easy. Although I noticed a mark-up price for the same battery when searched for different vehicles.

So far so good

Excellent, easy, fast.

The listed matching vehicles were a little vague, still a little uncertain if the part will fit, will have to find out for sure once it arrives

it was very easy and simple, thank you

Great products and prices

Best prices I have found. They got me a tracking number within 2 business days. Can't wait for my goods to arrive. Will be using this site again for sure.

Cheapest price and shipping!

Great product at a low price!

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