Dayco®Verified to fit 10 vehicles
| Vehicle | Trim | Engine | Notes |
|---|---|---|---|
| 2017 Smart FortwoMain Drive | — | L3 0.9L | —View details |
| 2016 Smart FortwoMain Drive | — | L3 0.9L | —View details |
| 2012 BMW 750iMain Drive | — | V8 4.4L · FULL HYBRID EV-GAS (FHEV) | —View details |
| 2012 BMW 750LiMain Drive | — | V8 4.4L · FULL HYBRID EV-GAS (FHEV) | —View details |
| 2011 BMW 750iMain Drive | — | V8 4.4L · FULL HYBRID EV-GAS (FHEV) | —View details |
| 2011 BMW 750LiMain Drive | — | V8 4.4L · FULL HYBRID EV-GAS (FHEV) | —View details |
| 2010 BMW X5Air Conditioning | — | L6 3.0L | Note: without Auxiliary A/CView details |
| 2009 BMW X5Air Conditioning | — | L6 3.0L | Note: without Auxiliary A/CView details |
| 2008 BMW X5Air Conditioning | — | L6 3.0L | Note: without Auxiliary A/CView details |
| 2007 BMW X5Air Conditioning | — | L6 3.0L | Note: without Auxiliary A/CView details |
Interchange Checker
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WARNING: Handling passenger or off-highway motor vehicle parts can expose you to chemicals such as phthalates and lead, known to the State of California to cause cancer and reproductive harm. Service the vehicle in a well-ventilated area, wear gloves, and wash your hands. See www.P65Warnings.ca.gov/motor-vehicle-parts
Guaranteed fit — or free return
Guaranteed to fitFits your vehicle or we pay the return. Learn more
If a part we confirmed for your vehicle does not fit, we cover the return shipping and refund you in full. That is the fitment guarantee.
Free Returns if it doesn't fitRead Details
Nobody likes buying a part that turns out to be wrong. So if it doesn't fit, send it back for a full refund at no cost to you — return shipping is on us — and we'll help you get the right one.
AutoBuffy 24-month guaranteeCovered on this part, unlimited miles. Learn more
Every part is covered for 24 months. Many brands add their own manufacturer warranty on top.
4.9/5 ratingFrom 19,069 verified customers. Learn more
Ratings come from verified AutoBuffy buyers after delivery — no imported or paid reviews.
The brand behind your
Serpentine Belt
Dayco builds this Serpentine Belt to original-equipment standards.
Brand-first. Fitment-obsessed.
We do not list every part on earth — just the brands automakers actually trust. And we use AI to double-check not just the fitment but the product details on every listing, because we hate buying the wrong part as much as you do.
Top curated brands only
The brands automakers actually put on the car. No white-label mystery boxes.
We're obsessed with fitment
Year, make, model, trim, engine — plus the fine print most sites skip — so it fits the first time.
Search any part number
The number off your old part, a competitor listing, or the dealer part — we cross it and confirm the match.
Dayco Serpentine Belt - 5070539
Guaranteed fit or free return
Dayco Serpentine Belt - 5070539
In stock· ships today
FREE shipping · Get it by Wed, Nov 4
Delivering to your area ·
FREE delivery between Wed, Nov 4 to Wed, Nov 4
Ships To:Key Features
About This Serpentine Belt
This DAYCO automotive component is engineered to meet or exceed OEM specifications for reliable performance and long service life.
Key Features
- Meets or exceeds OEM specifications
- Direct-fit replacement design
- Rigorously tested for durability
- Professional-grade construction
- Backed by manufacturer warranty
Signs This Part Needs Replacement
- •Unusual noises from the component area
- •Decreased vehicle performance
- •Warning lights on dashboard
- •Visible wear or damage
- •Failed vehicle inspection
DAYCO
Trusted Automotive Brand
DAYCO is a trusted manufacturer of quality automotive parts.
View all DAYCO productsInstallation Guide
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The brand behind your
Serpentine Belt
Dayco builds this Serpentine Belt to original-equipment standards.
The Dayco Serpentine Belt (5070539) is a direct-fit replacement for 2007-2017 BMW and Smart vehicles. It cross-references 11 28 7 557 257, 11 28 7 572 069, 11 28 7 631 827, 11.28.7.557.257, 11.28.7.572.069 and more. UPC 036687646385. In stock and ships free.
About This Product
Serpentine Belt
The Dayco Serpentine Belt (5070539) is a direct-fit replacement for 2007-2017 BMW and Smart vehicles. It cross-references 11 28 7 557 257, 11 28 7 572 069, 11 28 7 631 827, 11.28.7.557.257, 11.28.7.572.069 and more. UPC 036687646385. In stock and ships free.
This DAYCO automotive component is engineered to meet or exceed OEM specifications for reliable performance and long service life.
Key Features
- Meets or exceeds OEM specifications
- Direct-fit replacement design
- Rigorously tested for durability
- Professional-grade construction
- Backed by manufacturer warranty
Signs This Part Needs Replacement
- Unusual noises from the component area
- Decreased vehicle performance
- Warning lights on dashboard
- Visible wear or damage
- Failed vehicle inspection
Brand-first. Fitment-obsessed.
We only sell brands automakers trust, and we double-check the fit on every listing.
Top curated brands only
The brands automakers put on the car.
Obsessed with fitment
Year, make, model, trim, engine, plus the fine print.
Search any part number
Your old part, a competitor, or the dealer #. We confirm the match.
Shop owner? Get BuffyPro business pricing
Fitment Obsessed
Every part checked against your exact year, make, model, trim, and engine.
Wrong Fit? On Us.
Free return shipping, no restocking fee — the fitment guarantee.
Brands OEMs Trust
The names automakers actually put on the car.
Millions of Parts, One Promise
If we say it fits, it fits.