ACDelco Professional 38172 Drive Belt Tensioner Assembly with Pulley

ACDelco Professional 38172 Drive Belt Tensioner Assembly with Pulley

$ 59.19

Score By Feature

Based on 59 ratings

Packaging

8.90

Giftable

9.00

Delivery

9.07

Satisfaction

9.04

OveReview Final Score

How Our Score Is Calculated

Product Description

To ensure reliable performance, it is important that the belt is tensioned properly, aligned, and dampened

For longer belt and accessory component life, the patented vibration damping system increases tensioner life and belt life

With a torsional round spring design, you can achieve consistent tension and prevent contamination for a much longer life span

Covers domestic, import, and heavy duty applications with our complete line of products

The fit is specific to the vehicle

Questions & Answers

Does this idler belt tensioner have a difference from Acdelco's 98094201, which is also compatible with the Duramax of the same year?

The price is.. Did not send me a copy. An easy way to beat the beat is to just go to O'Riley's and pick one up.

Selected User Reviews For ACDelco Professional 38172 Drive Belt Tensioner Assembly with Pulley

I'm really happy with the tensioner

4/5

It was difficult to install the breaker bar in the 1/2" square hole you put the pulley bearings in. The bolts you used to hold the pulley were too small and a little loose. It's been almost 40 years since I've used this breaker bar and I used it to remove the old one without any problems. You might want to test your ratchet or bar on a new one before mounting it, and maybe take a Moto tool to it beforehand. My old tensioner had loose bearings in the pulleys, so if the belt slips while I am trying to put it on, I could easily break a finger. I put on the new tensioner and the bearings are much tighter. I'll keep it as a spare, and if the new replacement fails, I only need to replace the pulley. Belt, tensioner, and idler pulleys were replaced at the same time. However, after I installed a new AC-condenser I had to replace the belt also I must replace a Delco alternator at the same time, as it is defective. If I replace it, I will open up the hole a bit for my breaker bar, so future belt replacements will not be as difficult.

Summer Murray

| Apr 06, 2021

The stock one appears to be the same, though it does not seem to be as tough

3/5

It's not really clear what happened to it. The tensioner pulley on my new alternator burst open when I put my correct size wrench in the slot to release the pressure, and with the belt taut, I couldn't put the belt over the alternator and now I have two stress cracks. When I took off the serpentine belt, I used the same amount of pressure I used when I put I am not pleased with this.

Ephraim FitzGerald

| Sep 01, 2020

This is the perfect fit for the This is the perfect fit for the There is only one concern about this part when compared to stock, and that would be the bearing size

5/5

Despite the bearing being half the size of the stock part - that makes me wonder about the long term life - the part fit perfectly and was able to pull the right amount of tension during installation. Despite having a long life, I was sold shortly after the installation, so I cannot comment on its long-term durability.

Scout Horn

| Oct 26, 2020

The book is just what I needed for my reading list

5/5

This is a replacement for.

Cassandra McDowell

| Apr 28, 2021

This is exactly what I wanted

5/5

The quality seems to be OEM.

Kai HODGSON

| Apr 27, 2021

It is the perfect replacement

5/5

This is the perfect replacement for a 2004 GMC.

Mina Fischer

| Mar 05, 2021

I had no problems using the original ACDelco part that worked perfectly like the

5/5

Silas Melton

| Apr 27, 2021

It is easy to shop for ACDelco parts

5/5

The belt fits perfectly on my 2005 Duramax you may need a breaker bar and to be an excellent contortionist to thread the belt and pressure the tensioner all at the same time, but this is possible with no assistance.