My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

Gates K040378HD Fleetrunner Micro-V Serpentine Belt

(Chevrolet Silverado 1500 1999-2008, Silverado 1500 HD 2001-07, Suburban 1500 2000-08, Silverado 2500 HD 2001-08, Tahoe 2000-08 + 41 more models)

Part of: Gates Fleetrunner Micro-V Serpentine Belt

Other options in this family: Gates K060882HD Gates K060714HD Gates K080726HD Gates K061373HD Gates K080514HD

Manufacturer

Picture for manufacturer Gates

Part Number

K040378HD
17 reviews
Sale Price

$28.07

2 left at this price

delivery box

Usually delivered within 2 days

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Gates K040378HD Fleetrunner Micro-V Belt is a premium heavy-duty serpentine belt engineered for demanding commercial and fleet applications. Built with Gates' advanced EPDM rubber compound and high-tensile strength aramid cord reinforcement, this belt delivers superior heat resistance, flexibility, and power transmission in harsh operating environments.

Key Features:

  • Heavy-duty Fleetrunner construction for extended service life in commercial vehicles
  • Micro-V design with 0.56-inch top width for multiple rib configurations
  • 37.89-inch effective length with 38.453-inch outside circumference
  • EPDM rubber construction resists heat, ozone, and weathering
  • Aramid cord reinforcement provides exceptional tensile strength and minimal stretch
  • OE replacement quality for reliable fit and performance
  • Backed by Gates limited lifetime warranty

This belt is designed to meet or exceed OEM specifications, making it an ideal replacement for worn or damaged serpentine belts in trucks, buses, and heavy-duty fleet applications. Gates Fleetrunner belts are trusted by professionals for their durability and consistent performance across millions of miles of service.

Products specifications

Fits

Chevrolet Silverado 1500 1999-2008, Silverado 1500 HD 2001-07, Suburban 1500 2000-08, Silverado 2500 HD 2001-08, Tahoe 2000-08, Avalanche 1500 2002-06, Silverado 3500 HD 2007-08, Avalanche 2007-08, Express 3500 2003-08 + 37 more models

Number of Ribs

4

OE Comparison Rating

OE Improved (OE+)

Outside Circumference (in)

38.453

Outside Circumference (mm)

977

Section

K

Top Width (in)

.56

Top Width (mm)

14

Great service, parts, prices...

Very easy process

Perfect. Easy

Very easy

You kept my item in my shopping cart for an extended period (3-4 weeks) without sending me constant reminders to check out. Thanks for the excellent service to date.

Good prices

Very satisfied did the job

Easy part search engine, easy order system and fast free delivery.

It was ok. But problems with my email.

Great site. I received my product quickly and it was the product I ordered.

Autoplicity has the best prices around! They were quick to email a confirmation of the order, shipment, and delivery. I was VERY impressed! I also received my order earlier than I thought, which is always a plus. Will definitely do business with them again! Thanks!

Best Price on the Net for K&N System for my 2012 HEMI RAM. My Order 18270 is shipping today and I can't wait to get it installed!

Best prices online! Ordered a JBA performance exhaust and Airaid intake system for my 06 F-150. Was hesitant at first because I never heard of them but ordering was a breeze and saved me over $100 total for two items compared to anywhere else. Had package at my door in about 24 hours and even selected normal UPS ground shipping. Very satisfied and will definitely return!

Like that Amazon is linked with Autoplicity made checkout a breeze!

First time using Autoplicity. Found some great pricing on their site. Plan on doing plenty of mods to my new truck and would definetley recommend them and would be using them again very soon.

very excellent oil the only oil that has been in my harley since it was new and it a 95 very fast shipper ordered it 19 feb and got it 22 feb

This was my first order but will definitely use them again. Best price and quick shipment.

Share icon
Return Policy
Returns are easy at THMotorsports

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy