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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Idler Pulley With Bolt for 2020-2021 Freightliner MT45 - 36299

Product ID: 5887411

Details

Brand
ACDelco
Color
Black
Item Length
5.2 Inches
Item Weight
1 Pounds
Manufacturer
ACDelco
Material
steel

📏5.2-inch diameter fit

⚙️Precision steel build

🛡️Limited lifetime warranty

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Description

⚙️ Drive your Freightliner with confidence — precision engineered, built to last!

COMPACT EFFICIENT - 5.2-inch diameter optimizes belt tension and drive efficiency for smoother engine operation.
LIFETIME CONFIDENCE - Limited lifetime warranty offers peace of mind and reliability for professional-grade maintenance.
PERFECT FIT GUARANTEE - Specifically designed for 2020-2021 Freightliner MT45 6.0L V8 Gas engines for seamless installation.
TRUSTED OEM ALTERNATIVE - ACDelco Gold quality meets or exceeds original equipment standards, backed by General Motors.
ENGINEERED FOR EXCELLENCE - Steel construction ensures durability and long-lasting performance under heavy-duty conditions.

The ACDelco Idler Pulley with Bolt is a premium steel accessory designed for 2020-2021 Freightliner MT45 models with 6.0L V8 Gas engines. Engineered to meet OEM standards and backed by General Motors, this 5.2-inch diameter pulley ensures optimal belt tension and durability. With a limited lifetime warranty and a trusted brand reputation, it’s the smart choice for professionals seeking reliable, long-lasting performance.

Specifications

ASIN	B002E54VSG
Best Sellers Rank	#46,445 in Automotive ( See Top 100 in Automotive ) #6 in Automotive Replacement Idler Pulleys
Brand Name	ACDelco
Color	Black
Customer Reviews	4.8 4.8 out of 5 stars (1,192)
Global Trade Identification Number	00707773573402
Item Dimensions L x W	5.2"L x 5.2"W
Item Length	5.2 Inches
Item Weight	1 Pounds
Manufacturer	ACDelco
Manufacturer Warranty Description	Limited Lifetime Warranty (Parts Only). Please see ACDelco.com for more details.
Material Type	steel
Outside Diameter	5.2 Inches
UPC	707773573402
Unit Count	1.0 Count

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50721CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Senegal.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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