Mercedes-Benz 420SEL Adjust Drive Belts at your home or office.

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Adjust Drive Belts Service

How much does a Adjust Drive Belts cost?

On average, the cost for a Mercedes-Benz 420SEL Adjust Drive Belts is $95 with $0 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
1986 Mercedes-Benz 420SELV8-4.2LService typeAdjust Drive BeltsEstimate$114.99Shop/Dealer Price$132.49 - $145.62
1991 Mercedes-Benz 420SELV8-4.2LService typeAdjust Drive BeltsEstimate$94.99Shop/Dealer Price$112.52 - $125.67
1989 Mercedes-Benz 420SELV8-4.2LService typeAdjust Drive BeltsEstimate$94.99Shop/Dealer Price$112.52 - $125.67
1987 Mercedes-Benz 420SELV8-4.2LService typeAdjust Drive BeltsEstimate$94.99Shop/Dealer Price$112.48 - $125.60
1990 Mercedes-Benz 420SELV8-4.2LService typeAdjust Drive BeltsEstimate$94.99Shop/Dealer Price$112.55 - $125.72
1988 Mercedes-Benz 420SELV8-4.2LService typeAdjust Drive BeltsEstimate$94.99Shop/Dealer Price$112.52 - $125.67
Show example Mercedes-Benz 420SEL Adjust Drive Belts prices

What are drive belts all about?

The drive belts are connected to the crankshaft (a part of the engine), as well as to the alternator, air conditioning, and power steering system. The belts are responsible for transferring power from the crankshaft to these other systems. Over time, and especially if multiple systems that put stress on the belts are being used, the belts can grow loose, or unaligned. When this happens the belts will need to be adjusted so that they can return to their normal, optimal position.

Keep in mind:

  • If the drive belt is at all frayed or cracked it should be replaced instead of adjusted.
  • When the drive belt is adjusted, the drive belt tensioner and idler pulley should both be inspected.

How it's done:

  • Adjust the drive belts

Our recommendation:

Your drive belts should always be checked during tuneups and maintenance. During any kind of servicing your drive belts should be checked to see if they need to be replaced or adjusted.

What is a common symptom indicating you need to adjust the drive belts?

  • Squealing noise from the engine

How important is this service?

Your alternator, power steering, and air conditioning are all powered by your drive belt. The belt is connected to the crankshaft, and transfers power to these systems. As the belt is used and wears, it can grow lose, or begin to become unaligned. If the drive belt becomes loose, it won’t move as efficiently, and it won’t transfer power as efficiently. If the belt becomes unaligned, it can come into contact with parts of the engine, which can cause damage.

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Excellent Rating

(18)

Rating Summary
17
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0
1
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17
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Dave

23 years of experience
303 reviews
Dave
23 years of experience
Mercedes-Benz 420SEL V8-4.2L - Oil Change - San Jose, California

Manuel

12 years of experience
82 reviews
Manuel
12 years of experience
Mercedes-Benz 420SEL V8-4.2L - Oil Pressure Sensor Replacement - Naples, Florida
First class service. Knowledgeable and considerate.

Luther

16 years of experience
57 reviews
Luther
16 years of experience
Mercedes-Benz 420SEL V8-4.2L - Inspection / Diagnostics - Atlanta, Georgia

Patrick

33 years of experience
1408 reviews
Patrick
33 years of experience
Mercedes-Benz 420SEL V8-4.2L - Car is not starting - Pflugerville, Texas
Very good.

Excellent Rating

(18)

Rating Summary
17
0
0
1
0
17
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1
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Number of Mercedes-Benz 420SEL services completed
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TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
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