What does a serpentine belt do?

The serpentine belt is a single, continuous belt that drives multiple accessories on your engine. This typically includes the alternator, power steering pump, water pump, and air conditioning compressor. It's crucial for keeping these systems running.

How often should I replace my serpentine belt?

While there's no strict mileage interval for all vehicles, it's recommended to inspect your serpentine belt regularly, usually during oil changes. Look for signs of wear like cracks, fraying, or glazing. Many manufacturers suggest replacement around 60,000 to 100,000 miles, but checking for damage is key.

What are the signs of a failing serpentine belt?

Common signs include a squealing noise coming from the engine, especially on startup or when turning the steering wheel. You might also notice your battery warning light illuminating, loss of power steering assist, or the air conditioning not blowing cold air.

Gates Serpentine Belt K070640 - BMW 540i, 740i, M5, X5

Name: Gates 00-03 BMW M5 / 02-03 X5 / 97-98 540I/740I Micro-V Belt
Brand: Gates
Price: 23.06 USD
Availability: InStock

Gates 00-03 BMW M5 / 02-03 X5 / 97-98 540I/740I Micro-V Belt

$23.06

In Stock

Gates Micro-V belt for BMW 540i, 740i, M5, X5. Ensures reliable power to accessories like the alternator and power steering pump.

Key Features

Fits 1997-1998 BMW 540i, 1997-1998 740i, 1996-1998 740iL, 2010-2011 760Li, 1996-1997 840Ci, 2000-2003 M5, and 2002-2003 X5.
Constructed with EPDM rubber for excellent resistance to heat and cracking.
Micro-V design ensures secure pulley grip and reduces slippage.
Meets or exceeds OEM specifications for reliable performance.
Drives essential accessories like the alternator, power steering pump, and A/C compressor.

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Will this fit your vehicle?

Product Details

This Gates Micro-V belt is built with a EPDM rubber compound, which is known for its resistance to heat and cracking. This is important because the serpentine belt is responsible for driving many of your vehicle's essential accessories, including the alternator, power steering pump, and air conditioning compressor. When it wears out, you'll notice issues like a lack of power steering, a dead battery, or a noisy engine.

Gates designs these belts to meet or exceed OEM specifications, meaning they fit right and perform reliably. The Micro-V design features multiple V-ribs that grip the pulleys securely, reducing slippage and ensuring consistent power transfer. This particular belt fits a range of BMW models, including the 540i, 740i, M5, and X5, making it a solid option for many owners looking to replace a worn or damaged belt.

Replacing your serpentine belt is a common maintenance item. If you're hearing squealing noises from the front of your engine, or if your battery warning light comes on, it's a good time to inspect your belt and consider a replacement.