Mercedes-Benz S320 Idler Pulley Replacement at your home or office.

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Idler Pulley Replacement Service

How much does a Idler Pulley Replacement cost?

On average, the cost for a Mercedes-Benz S320 Idler Pulley Replacement is $385 with $49 for parts and $336 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
1999 Mercedes-Benz S320L6-3.2LService typeIdler Pulley ReplacementEstimate$469.96Shop/Dealer Price$509.57 - $594.38
1998 Mercedes-Benz S320L6-3.2LService typeIdler Pulley ReplacementEstimate$448.34Shop/Dealer Price$480.53 - $559.77
Show example Mercedes-Benz S320 Idler Pulley Replacement prices

What is the Idler Pulley all about?

An idler pulley is responsible for guiding and maintaining tension with the drive belt. The drive belt (also called the serpentine belt) connects the engine to various components of the vehicle (such as the air conditioning, power steering, and alternator). Power is transferred from the engine to these systems via the drive belt. The belt is held in place by the idler pulley, which keeps the tension on the drive belt and guides it.

Keep in mind:

When an idler pulley is replaced, it’s a good idea to replace the drive belt as well.

How it's done:

  • Inspect engine for noises
  • Inspect the drive belts
  • Spin the pulley
  • Replace the pulleys if found bad
  • Check for proper operations of the belt

Our recommendation:

Any time that drive belt maintenance is performed on your vehicle, the idler pulley should be examined. Idler pulleys usually wear out with time, so it is a safe precautionary procedure to have your idler pulley replaced during any drive belt servicing.

What common symptoms indicate you may need to replace the Idler Pulley?

  • Noises from the engine
  • Warning lights are on
  • Loss of power steering
  • Car is overheating

How important is this service?

The idler pulley is responsible for keeping your drive belt aligned, and for maintaining the tension in the drive belt. The drive belt is used to transfer power from the engine to the alternator, power steering, and air conditioning, among other systems. If the driver pulley starts to degrade, the drive belt will be less efficient, and your vehicle will be liable to overheat or run poorly. If the idler pulley fully breaks, the drive belt will no longer work at all, and your car won’t run.

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Meet some of our expert Mercedes-Benz mechanics

Real customer reviews from Mercedes-Benz owners like you.

Excellent Rating

(25)

Rating Summary
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Thomas

13 years of experience
227 reviews
Thomas
13 years of experience
Mercedes-Benz S320 L6-3.2L - Oil Change - Fort Worth, Texas
Thomas is a great professional that know how to get into working on the vehicle for fast repair to get back on the road.

Attila

20 years of experience
1104 reviews
Attila
20 years of experience
Mercedes-Benz S320 L6-3.2L - Check Electrical Equipment - Florham Park, New Jersey
Excellent

John

33 years of experience
1126 reviews
John
33 years of experience
Mercedes-Benz S320 L6-3.2L - Car is not starting - La Marque, Texas
John was an awesome technician. He was very professional, thorough, and prepared. It was impressive to see him work diligently and explain, in detail, what was wrong with my vehicle. Make sure you book John when using this service; I promise you, you'll be glad you did!

Raul

35 years of experience
285 reviews
Raul
35 years of experience
Mercedes-Benz S320 L6-3.2L - Trunk Latch Adjustment - Berkeley, California
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Excellent Rating

(25)

Rating Summary
22
1
0
2
0
22
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2
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Number of Mercedes-Benz S320 services completed
275+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1100+
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