Why is it important to have belts and hoses replaced periodically?

If a drivebelt or radiator coolant hose fails while driving, you won’t be able to continue driving — and additional engine damage may occur if the engine overheats.

How long do belts and hoses typically last?

Lifespans of belts and hoses vary based on factors including the climate and driving habits, but generally a drivebelt (also known as a serpentine belt) lasts about 50,000-100,00 miles, while radiator coolant hoses can last about five years.

What are signs the drivebelt needs replacement?

A worn drivebelt can slip while the engine is running, causing high-pitched squealing or chirping sounds. Additionally, it can show cracks and fraying around the edges or a glazed (shiny) appearance. They’re signs it’s time to change the belt.

What about the tensioner pulley?

The tensioner pulley complements the drivebelt and is also subject to wear and possible replacement. Signs it may need replacement include squealing sounds or, if the bearing is failing, a grinding sound while the engine is running.

What are signs of a failing radiator hose?

A worn or failing radiator coolant hose often develops cracks that lead to leaks. Evidence for that includes drips or puddles beneath the radiator or engine, along with the odor of coolant. The engine may also overheat.

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ACDelco Gold 38001 (88909582) Idler Pulley

ACDelco Gold 38001 (88909582) Idler Pulley

Product ID: 3240565

🔇Smooth, quiet bearing operation

🔧OEM-spec fit for seamless installation

⚙️Steel construction for durability

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Sold byAmazon Cote D' IvoireDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚙️ Keep your drive belt in perfect harmony — because your ride deserves the gold standard!

PRECISION STEEL BUILD - Engineered for long-lasting strength and reliability
EFFORTLESS INSTALLATION - Fits perfectly without adjustments, saving you time and hassle
OEM GRADE FIT FUNCTION - Perfect alignment and compatibility with GM and most vehicle models
TRUSTED BY PROFESSIONALS - Backed by General Motors and top-rated by thousands of users
WHISPER QUIET PERFORMANCE - Eliminates belt noise with smooth bearing rotation

The ACDelco Gold 38001 Idler Pulley is a premium steel accessory pulley designed to maintain optimal drive belt alignment and routing. Manufactured to meet OEM specifications for General Motors and most other vehicle makes, it ensures smooth, quiet operation with a durable bearing and precise fit. Highly rated by users for easy installation and reliable performance, this pulley delivers professional-grade quality backed by GM.

Specifications

ASIN	B000C9KQSA
Best Sellers Rank	#5,773 in Automotive ( See Top 100 in Automotive ) #1 in Automotive Replacement Idler Pulleys
Brand	ACDelco
Customer Reviews	4.6 4.6 out of 5 stars (2,451)
Date First Available	October 10, 2007
Exterior	Machined
Is Discontinued By Manufacturer	No
Item Weight	10.2 ounces
Item model number	38001
Manufacturer	ACDelco
Manufacturer Part Number	88909582
Model	ACDelco - Idler Pulley (B) (38001)
OEM Part Number	88909582
Product Dimensions	3.6 x 3.6 x 2 inches

Reviews

M**L

Smooth Performance and Excellent Build Quality

This ACDelco Gold idler pulley is top‑notch. Installation was straightforward, and it fit perfectly without any adjustments. The bearing runs smooth and quiet, eliminating the squeak I was dealing with before. The construction feels solid, with durable materials that inspire confidence it will last for years. I’ve put a few hundred miles on since replacing it, and the belt tracks perfectly with no wobble or noise. It’s clear this part is engineered to OEM standards, and I appreciate the reliability ACDelco delivers. If you’re looking for a dependable replacement pulley that installs easily and performs flawlessly, this one is a great choice. Highly recommend!

20.11.2025

J**R

Works just fine.

Bought this for my 2005 mustang gt 4.6. Fits perfectly and works great. Same quality as the local auto parts store but a little cheaper if you don’t mind waiting a couple of days. I wasn’t in a hurry at all so worked out perfectly for me. Would recommend.

1.03.2026

T**R

Acdelco part

Chasing a noise from the bad power steering pump purchased here, I let the internet convince me it might be a pulley, so I bought one of them here also. The pulley is good quality but wasn’t the problem.

7.04.2026

P**E

OEM part for a good price arrived quickly

What I received was an original OEM part. For my 1999 Chevy S10 it fit perfectly, functioned flawlessly and took just 5 minutes to install. I found this part in the local part stores for 50 to 100% more money so I received good value for an OEM part from Amazon and it came right to my door in two days (quicker if needed). Note for some applications: your OEM pulley may come with a keeper washer that holds the bolt in place. This old keeper washer can be pulled off with pliers and discarded. It must have been some assembly aid when your rig came off the assembly line and it not essential for function - pull it off and throw it away if you find one in your case. For my 1999 Chevy S10, torque was 35 to 37 foot pounds. The Amazon 'fit guide' has been very reliable in my experience. Thanks to Amazon for supplying the right part for a fair price and delivering it to my door.

8.06.2025

B**S

Great quality and fit perfectly

Excellent quality and fit perfectly

3.03.2026

J**Y

Ac delco

Good quality but theres slight play other than its good quality and no noises fitment is exact reasonable price an easy to install

28.02.2026

H**T

quiet at last

works well in my 94 gmc suburban, quiet at last. the angry hummingbirds are gone.

9.04.2026

T**G

OEM

Great quality

2.05.2026

B**I

Bonne pièce

Fonctionne parfaitement

2.06.2025

C**A

bien

se ve de calidad espero dure

20.05.2024

R**.

Fits well and great quality

Fits perfectly as a tensioner pulley on my small block 350 Chevy

3.10.2023

R**N

Perfect

Good fit for our ford ranger

15.11.2024

G**N

OEM pulley

Quality pulley ..came in ac delco package, works well

25.01.2026

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