BMW 2500 Serpentine/Drive Belt Replacement at your home or office.

Our mobile mechanics offer services 7 days a week. Upfront and transparent pricing.

Estimate price near me

Service Location

customer ratings

(204)

Included for free with this service

Online Booking

Mechanic comes to you

12-month / 12k-mile warranty

Free 50 point safety inspection

Our certified mobile mechanics can come to your home or office 7 days a week between 7 AM and 9 PM.

customer ratings

(204)

Serpentine/Drive Belt Replacement Estimate for BMW 2500

BMW 2500 Serpentine/Drive Belt Replacement costs $136 on average.

CarServiceEstimateShop/Dealer Price
1969 BMW 2500L6-2.5LService typeSerpentine/Drive Belt ReplacementEstimate$184.95Shop/Dealer Price$233.19 - $322.79
1971 BMW 2500L6-2.5LService typeSerpentine/Drive Belt ReplacementEstimate$174.95Shop/Dealer Price$220.42 - $307.94
1970 BMW 2500L6-2.5LService typeSerpentine/Drive Belt ReplacementEstimate$174.95Shop/Dealer Price$220.42 - $307.94
1968 BMW 2500L6-2.5LService typeSerpentine/Drive Belt ReplacementEstimate$174.95Shop/Dealer Price$220.38 - $307.87
Show example BMW 2500 Serpentine/Drive Belt Replacement prices

Serpentine/Drive Belt Replacement Service

What is a serpentine belt and how does it work?

A serpentine belt is a relatively long, flat, multi-ribbed belt that is driven by the engine’s crankshaft pulley. The belt drives many, and often all, of the engine accessories such as the alternator, air conditioning compressor, power steering pump, water pump, and air pump. The serpentine belt is tensioned by a hydraulic or spring-loaded automatic tensioner. Some older cars use a serpentine belt to drive most accessories but will also have a shorter v-style belt to drive, for example, the power steering pump.

Belts

When to consider replacing the serpentine belt:

  • Regularly scheduled maintenance. Typically, belt manufacturers recommend belt replacement at 90,000 miles. However, the belt must be inspected for wear or damage at regular intervals prior to this high mileage.
  • Squealing noise, belt slippage, visible belt damage. Should the belt fail or wear out prematurely, you may hear noise or you may see visible signs of deterioration such as missing chunks of rubber, excessive cracking, or a shredded appearance on the edge of the belt.
  • Battery Light. A loose belt, perhaps caused by a defective tensioner, may not drive the alternator at adequate speed and thus the battery may discharge, causing the warning light to illuminate.
  • Engine overheating. Often, the serpentine belt drives the water pump. In those applications, if the belt breaks the engine will overheat in seconds to minutes. If the belt is inadequately tensioned, you may notice higher-than-normal engine operating temperature.

How do mechanics replace the serpentine belt?

  • Prior to removing the belt, the mechanic must run the engine to determine if the idler pulley and the belt tensioner are noise-free. Those rotating components have grease filled bearings and are subject to wear. In addition, the mechanic will ensure that all pulleys and accessories are turning in the same plane. These steps help make sure your new belt will operate trouble-free for its full-service life.
  • The belt’s routing path through the various components is noted. The belt tensioner is released, usually with a wrench or lever, to release the tension from the belt. With the tension off, the belt slides off the pulleys.
  • All rotating components — that is the alternator, air conditioner compressor, etc. — are checked for smooth operation and no noise.
  • If everything checks out, the new belt is slipped over all of the pulleys while holding the tensioner away from the belt. Once the belt is centered on all pulleys, the tensioner is released and the installation is complete. The engine is run to ensure normal operation.

Is it safe to drive with a serpentine belt problem?

No. Should the belt have visible damage, you risk unexpected and sudden breakage that could potentially leave you stranded. Serpentine belt problems that result in the alternator not charging may cause the battery to discharge, which will result in loss of electrical power to the vehicle. Additionally, if a deteriorated belt breaks and that belt drives the water pump, the engine will overheat in a matter of seconds.

When replacing the serpentine belt keep in mind:

  • On many cars, the expected service life of a serpentine belt is around 90,000 miles. Should the belt fail well prior to that, a very careful inspection should be performed to check for out-of-alignment pulleys, a possibly out-of-position crankshaft harmonic balancer on which the drive pulley is mounted, binding pulleys, or a defective belt tensioner.
  • Attention should always be given to serpentine belt routing, since proper routing is critical to proper belt tension, and function of the driven components.
  • Sometimes it is difficult to distinguish serpentine belt related noise from other engine noises. In these cases, a mechanic will determine the origin of the noise by momentarily running the engine without the serpentine belt attached.

Fast and easy service at your home or office

Backed by 12-month, 12.000-mile guarantee


Meet some of our expert BMW mechanics

Real customer reviews from BMW owners like you.

Excellent Rating

(204)

Rating Summary
194
2
4
1
3
194
2
4
1
3

Alexander

26 years of experience
19 reviews
Alexander
26 years of experience
BMW 325i L6-3.0L - Serpentine/Drive Belt - Orlando, Florida
Prompt, courteous and knowledgeable

Shane

17 years of experience
133 reviews
Shane
17 years of experience
BMW 335i L6-3.0L Turbo - Serpentine/Drive Belt - Georgetown, Texas
Shane was great.

Berchel

18 years of experience
101 reviews
Berchel
18 years of experience
BMW 745i V8-4.4L - Serpentine/Drive Belt - Gwynn Oak, Maryland
Berchel was on time very informative excellent job I like to keep him as my mechanic if possible.

Jeff

33 years of experience
441 reviews
Jeff
33 years of experience
BMW 650i V8-4.8L - Serpentine/Drive Belt - Granite Bay, California
Friendly and skilled. I enjoyed meeting and working a bit with Jeff. He has the tenacity and temperment needed to work on a BMW and complete the job. We had some parts issues, but Jeff solved these. Due to his non-ASE certification, Jeff cannot repair what he determined to be a faulty water pump. I'm leaving 3 stars because he told me he would fix this, but I'm unable to schedule this repair with Jeff or any of your mechanics. Why?? Also, cleanup and test drive was left to me. Why??

Excellent Rating

(204)

Rating Summary
194
2
4
1
3
194
2
4
1
3
Number of BMW Serpentine/Drive Belt Replacement services completed
2244+
services done by our mechanics
TOTAL NUMBER OF EXPERT BMW MECHANICS
1100+
experts on our platform

Recent articles & questions

How to Troubleshoot a Car Idling at a High Speed
Car idle speed increases or decreases if there are damaged fuses, idle control valve, throttle blades, ECM, or a vacuum leak.
B1923 OBD-II Trouble Code: Air Bag Memory Clear Circuit Short To Ground
B1923 means there is an issue with the airbag system, likely due to a faulty memory module, bad battery, or defective electrical wiring.
P0817 OBD-II Trouble Code: Starter Disable Circuit
P0817 means there is an issue with the starter disable circuit, possibly involving the battery, battery cable, or starter disable relay.

Engine stalls during acceleration, around 60 mph

Among common possibilities for the loss of power you are describing are throttle body faults (electronic throttle controls, throttle position sensor, mass airflow sensor, torn air intake hose), worn out spark plugs, faulty fuel pump or restricted fuel system, plugged...

Could the evap system cause the vehicle to run lean and have hard start up ? I have evap code and lean in both banks

When you are getting lean codes and codes to all the O2 sensors then this is caused by either a MAF sensor or the intake has vacuum leaks in the tube between MAF and throttle body or in PCV system....

I've been told I have 2 thermostats on my 2013 Chrysler 200 touring?

There are two separate thermostats in your application, a primary and a secondary. The primary and secondary thermostats have different temperature profiles in terms of their opening temperature because they are located on different areas of the engine. The primary...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com