Belt Fan and Alternator.
Serpentine Belt.
- Transmits power through and to the alternator, power steering pump, and A/C compressor
- Also known as a fan or accessory belt
- Replace when cracked, frayed, peeling, or malfunctioning
Your INFINITI engine relies on a variety of intricate, interconnected components that get you the characteristic INFINITI drive you can't live without. Many of these Engine components connect via a series of belts, one of which is called the Serpentine Belt.
Your INFINITI's Serpentine Belt is a strong, cyclical strap that transfers power to the power steering pump, alternators, A/C compressors, and, in some models, the water pump. Some people refer to the Serpentine Belt as a fan or accessory belt because it powers your INFINITI's peripheral devices. But, don't underestimate its importance.
Serpentine Belts are generally made of tough-but-flexible rubber manufactured to withstand the challenges involved in transferring energy from one engine component to the next. But, like other car parts, Serpentine Belts are subject to wear and tear.
Serpentine Belts can fray, crack, or even peel with age, or they can malfunction if they become soaked due to coolant or oil leaks. They can also lose alignment, slip, or lack tension, because of malfunctioning tensioning systems, which may result in needing to replace both the tensioner and the Serpentine Belt, or simply re-tensioning the belt, if it's still in working order. Some symptoms of Serpentine Belt problems are: weird rattling noises coming from the engine, subpar air conditioning or steering capabilities, engine sweltering, and visible signs of wear on the belt.
Generally, your INFINITI Serpentine Belt can last many thousands of miles, but its useful life can be shortened due to coolant leaks, oil leaks, and old tensioners. It's a good idea to inspect your Serpentine Belt during every oil change, or an INFINITI expert can do it for you when you visit one of our service centers near you.
The required method for a Serpentine Belt replacement varies depending on the type of tensioner mechanism it relies on. Accordingly, you should check your INFINITI owner's manual before attempting any part replacements at home.
Unsurprisingly, you'll need a Serpentine Belt replacement that fits your INFINITI model and year, and an adequate belt tensioner. Remember that if your INFINITI has a manual or hydraulic Serpentine Belt tensioner, visiting your nearest INFINITI service center is advisable.
When you're ready to get started, snap a photo of your belt's current placement and of how it winds around the motor's different parts. Then, release the tensioner using a ratchet and gently unravel the Serpentine Belt, ensuring not to mess with any accessories or pulleys!
Once the old Serpentine Belt is out, check it for signs of engine oil or coolant leaks, frays, and damage to pinpoint issues that go beyond-the-belt! Thread the new Serpentine Belt back into place and release the tensioner, adequately tightening it with a wrench. Lastly, turn the engine on and idle it while visually ensuring that the new belt runs smoothly.
Whether you decide to replace your INFINITI Serpentine Belt at home or get professional services from an INFINITI expert near you, having the right INFINITI part is essential. Buy an authentic Serpentine Belt replacement made-to-fit your INFINITI model and year straight from INFINITI! Find genuine Serpentine Belt replacements for your INFINITI FX50, INFINITI M37, INFINITI M56, INFINITI Q70, or INFINITI QX70. See the What This Fits tab for more details.
BELT-FAN & ALTERNATOR
Fits FX50, M37, M56, Q70, QX70