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ACDelco Gold 4K378 Standard V-Ribbed Serpentine Belt

Free shipping on orders over $29.99

$20.68

$ 9 .99 $9.99

In Stock

About this item

  • Drives several engine functions
  • Some ACDelco Gold parts may have formerly appeared as ACDelco Professional
  • Premium aftermarket replacement part
  • Manufactured to meet specifications for fit, form, and function for General Motors vehicles as well as most makes and models
  • Manufactured to meet or exceed strict quality requirements


ACDelco Gold (Professional) Standard Serpentine Belts are a high quality alternative to Original Equipment (OE) parts. Serpentine belts are multi-ribbed, and used to drive multiple devices on an engine such as the alternator, the power steering pump, and the water pump. ACDelco Gold (Professional) parts are manufactured to meet your expectations for fit, form, and function, making them a smart choice for General Motors vehicles, as well as most makes and models, including special applications. These high-quality parts are backed by General Motors. Some ACDelco Gold parts may have formerly appeared as ACDelco Professional.


Michael Bennett
Reviewed in the United States on March 12, 2025
Exact part needed for my vehicle. Would recommend.
paul greene
Reviewed in the United States on September 11, 2024
Had to return, belt not correct size, way to small
clifford fenton
Reviewed in the United States on August 4, 2024
Worked great
Larry Gow
Reviewed in the United States on August 26, 2024
Great fit. Perfect
P. Christopher Heffernan
Reviewed in the United States on February 7, 2024
My original GM belt went 18 years 174k miles. I tried to buy the original GM OEM belt again, but Amazon couldn't ship it for a few weeks. My old belt was so bad I didn't want to take a chance going on a trip at the end of the month, so I bought the 2nd best thing. AC Delco aftermarket, fits properly just like the GM belt did. No squeals. Likely the last AC belt I will ever change on my 2005 GMC Sierra 1500 SLE 4X4 5.3L B engine.
Ricardo
Reviewed in the United States on October 11, 2022
I got a different brand form what it was describe but still was a good quality and money value
abby223
Reviewed in Canada on January 20, 2020
So far so good
Nigel-d
Reviewed in Canada on August 18, 2019
fit good works great
Tyguy
Reviewed in Canada on May 14, 2019
Wrong belt
Cesar G.
Reviewed in the United States on September 9, 2018
Great price for replacement part
Customer
Reviewed in Canada on March 28, 2018
Perfect oem fit
Seth Patterson
Reviewed in Canada on April 24, 2018
Works good. Air conditioning belt.
Mr. T
Reviewed in the United States on January 15, 2015
I purchased this belt to replace the A/C drive belt on my 2005 Suburban (note that the larger serpentine belt for all the other accessories is a different part #). The original belt was dry, cracking and about to break. This one looks to be plenty durable and well made.This was a pretty easy job, though since you have to remove the primary serpentine belt to get to the A/C belt, you may as well replace both at the same time. And replace both tensioners while you are at it, and possibly the idler pulley as well if it is at all questionable. There are good videos online on how to do it.
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