Product Description

Accessory Drive Belt Tensioner Assembly Genuine For BMW

OE Numebr:
OE:11287549873

ITEM DETAILS

Specification
Part Type		Accessory Drive Belt Tensioner
Part Number		11287549873
Interchange Part Number		11 28 7 549 873 /
Weight		1.65 lbs
L x W x H		4.3 x 4.9 x 5.7
Part #		11287549873

Fitment For:

Application	Detail	Years
BMW 750i	United States	2009 – 2018
BMW 750i xDrive	United States	2571 – 2018
BMW 750Li	United States	2009 – 2015
BMW 750Li xDrive	United States	2571 – 2015
BMW Alpina B7	United States	2011 – 2015
BMW Alpina B7	United States	2017 – 2018
BMW Alpina B7L	United States	2011 – 2015
BMW Alpina B7L xDrive	United States	2011 – 2015
BMW Alpina B7 xDrive	United States	2011 – 2015
BMW 760Li	United States	2571 – 2015
BMW X5	United States	2571 – 2013
BMW X5	United States	2015 – 2017
BMW X5	United States	2011 – 2017
BMW X6	United States	2571 – 2017
BMW X6	United States	2008 – 2017
BMW 550i	United States	2011 – 2016
BMW 550i GT	United States	2571 – 2015
BMW 550i GT xDrive	United States	2571 – 2017
BMW 550i xDrive	United States	2011 – 2016
BMW 650i xDrive	United States	2012 – 2018
BMW M5	United States	2013 – 2016
BMW M6	United States	2012 – 2017
BMW 650i	United States	2012 – 2018
BMW 650i Gran Coupe	United States	2013 – 2018
BMW M6 Gran Coupe	United States	2014 – 2017
BMW 650i xDrive Gran Coupe	United States	2013 – 2018
BMW Alpina B6 xDrive Gran Coupe	United States	2015 – 2018
BMW M760i xDrive	United States	2017

 

Part Description:
Idler Pulley, Pulley Assembly Idle, Tensioner Pulley, PULLEY ASSY, IDLE* New and genuine OEM part.
* Original Packaging
* The same parts are used by the manufacturer in the finished vehicle
* Recommended for installation in official service centers of manufacturer

Compatibility or selection:
If you are not sure about compatibility of a chosen part number or need help with search, please:
* For ground vehicles: let us know the full chassis number or VIN
* For outboard engine: send us a photo of an identification label, located on the engine’s clamp
* For watercraft: send us HIN or identification label

Note:
If you do not have this information, please, send us any available information and we will try to help you.
If you need more items than there are available on sale or cannot find the needed 1 in our listing, please, let us know. We will check the availability and update the information.

Packaging & Delivery

Packaging Details: Carton
Lead Time:

Quantity(Pieces)	1 – 100	>100
Est. Time(days)	15	To be negotiated

Deatail Image

Why replace the timing belt with timing components?

Your gas HangZhouage will be dramatically increased when the timing components in your car get checked and serviced at the 60,000-HangZhou interval. A worn-out timing belt can interfere with the functioning of your car’s engine due to improper combustion. With the crankshaft and camshaft adjusted and a new timing belt fitted, the valves of your vehicle will give you great combustion. Getting the timing belt components in your car replaced will cost about a couple of hundred dollars, but damages due to a broken timing belt will cost you your engine. Getting your timing components replaced will give you the comfort of knowing your timing components are working in top-notch condition.

Company Profile
HangZhou CZPT Auto Parts Industry Co., Ltd is a family owned company, established in 2005.
As a real, direct and professional manufacture in China, CZPT has grown to become 1 of greatest manfacturer and exporter in Performance parts, include intake system, exhaust system, cooling system, interior&exterior parts etc.
We own a factory located in HangZhou, HangZhou, which has 8000 square meter, tens of machine, 150 workers, 15 person sales tean, 5 R&D department. Our customers cover North American, South American, Asia, Middle east and Europe. We export the millions of USD per year. Looking forward to have a nice cooperation with you. 
Why Choose YiBai?
It’s simple. The YiBai Company is built on delivering more Quality, Reliability, and Value than any other manufacturer. Whether supplying the world’s automakers with reliable OE parts, or developing aftermarket replacement parts at or above spec, YiBai’s line of products are built to deliver superior all-around performance every day.  
Aftermarket Parts Built At or Above Specification
The quality of YiBai parts is guaranteed because every component that leaves a YiBai factory has been designed with precision, manufactured to the strictest OE standards or above, and subjected to rigorous safety and performance tests. In the end, it all comes down to quality – that’s what the YiBai name stands for.
Measure Everything for a First Time Fit
Our First Time Fit philosophy attracts attention throughout the automotive world, while our commitment to pushing technology into the future and continually sets us apart around the globe.First Time Fit is a promise that YiBai makes to the aftermarket, by providing products that are OE grade or better – and fits the first time.

Our Service
1. OEM Manufacturing welcome: Product, Package… 
2. Sample order 
3. We will reply you for your inquiry in 24 hours.
4. After sending, we will track the products for you once every 2 days, until you get the products. When you got the goods, test them, and give me a feedback.If you have any questions about the problem, contact with us, we will offer the solve way for you.
FAQ
Q1. What is your terms of packing?
A: Generally, we pack our goods in neutral white boxes and brown cartons. If you have legally registered patent, we can pack the goods in your branded boxes after getting your authorization letters.
Q2. What is your terms of delivery?
A: EXW, FOB CIF, DDU.
Q3. How about your delivery time?
A: Generally, it will take 15 to 20 days after receiving your advance payment. The specific delivery time depends on the items and the quantity of your order.
Q4. What is your sample policy?
A: We can supply the sample if we have ready parts in stock, but the customers have to pay the sample cost and the courier cost.

 

Types of V-Belts and Their Properties

A v-belt’s inside length and pitch are determined by measuring along the bottom side. The included angle of a v-belt is measured from its flanks when it is extended. Most v-belt sections are 40 degrees. There are different types of v-belts, and the dimensions of each are standardized by different organizations. This article will introduce the different types of v-belts and their properties.

Notched v-belts reduce bending stress

Notched V-belts reduce bending stress by reducing the axial length of the belt by 2 or more notches. These notches are characterized by different profiles, which differ in the pitch angle and the inside length. ISO and DIN standards are followed by the manufacturers of these belts. Notched v-belts are used on industrial machinery in countries other than the US.
Compared to the standard V-belts, notched ones are designed to resist bending stress better and offer better heat dissipation. They also last longer and run cooler than standard V-belts. Furthermore, they are about 2 percent more energy efficient than their standard counterparts. Therefore, notched V-belts are a viable replacement for standard V-belts.
Notched V-belts are commonly used in industrial applications because of their low price, ease of installation, and availability of many sizes. Another advantage of notched V-belts is that they provide more wedging force and higher load capacity. Notched V-belts have a wider v-groove than flat ones, which makes them more effective for heavy-duty applications.
Notched V-belts also provide better traction. They reduce bending stress, which is beneficial for preventing fatigue and tearing of v-belts. Additionally, v-belts can be installed in an existing equipment to add more performance. And with proper maintenance and installation, notched V-belts will provide trouble-free service for many years to come.

Ribbed v-belts reduce heat dissipation

Various kinds of v-belts are available for varying applications. The more popular types are the fractional horsepower and the double-V. Fractional horsepower v-belts are designed for light-duty applications, such as machine shop equipment and household appliances. The common sectional names are 2L, 3L, 4L, and 5L. The L in each of these belts refers to the top width of the belt, multiplied by 1 eighth inch.
Unlike conventional belts, ribbed v-belts are flexible, making them ideal for use in vibrating loads. They reduce heat dissipation and can be ordered in single or multiple sets to match your application. However, ribbed v-belts should not be mounted on deep-groove sheaves, as this can cause the belt to turn over. If you use deep-groove sheaves, the risk of rupture is very high. Deep-groove sheaves can also cut banded belts. Extremely worn sheaves can also cause the belt to rip.
The 2 types of ribbed v-belts differ in their construction and application. While both types have trapezium cross-sections, they are similar in that they are made of polyurethane or other durable materials. Ribbed v-belts have an additional layer of fabric on the elastomer core for reduced noise and better heat dissipation.
Ribbed v-belts are available in a variety of sizes, including trough v-belts. Their cross-sections are categorized by their top and bottom widths and depths. The included angle of most v-belt sections is approximately 40 degrees. Different types of v-belts have different cross-sections, and these cross-sections are standardized by various organizations.
As the load increases, a ribbed v-belt will wedge into the groove and decrease the amount of friction needed to maintain the correct torque. Flat belts can track off the pulleys due to friction. However, V-belts are more stable and require less width than flat belts. The main advantage of ribbed v-belts is their increased efficiency.
The global-local finite-element model is also used to calculate the maximum and minimum J-integrals during a belt’s running cycle. The data is then used to evaluate the durability of ribbed v-belts in various applications. The numerical models used for the calculations involve a ribbed V-belt with 5 full ribs.

Cogged v-belts increase lateral rigidity to reduce belt whip

Cogged v-belts are designed for maximum performance and durability on even the harshest drive systems. These belts are made from high-modulus polyester cords that resist hardening and stretch and provide superior balance and strength. They also feature raw-edge sidewalls to reduce slip and drive vibration. In addition, they have specially-formulated rubber compounds for oil resistance. CZPT Cog-Belt offers substantial savings in downtime, energy consumption and horsepower.
A double cogged v-belt combines the benefits of cogged and double vee-belts. Its bonded reinforced tie band offers enhanced flexibility and reduces belt whipping in multiple-belt drives. Double cogged v-belt dimensions vary depending on the standards of the manufacturer. Regardless of the type, you’ll want to use a belt that is aligned correctly.
Standard v-belts are also known as wrapped or raw edge v-belts. Wrapped V-belts feature fabric covers above and beneath the cord to increase lateral rigidity and reduce belt whip. Cogged V-belts also have fabric covers to prevent wear on the core and increase the belt’s operating temperature. They’re ideally suited for applications that require high-temperature operation.
Cogged V-belts can significantly decrease energy consumption and improve power transmission capabilities. They also have a bias-cut cover stock that provides axial and lateral stability while preserving the cord integrity. A fiber loaded cogged construction offers optimum flexibility while minimizing heat buildup. It can be installed on any type of drive, including chain conveyors and industrial-grade machines.
The two-layer tie-band permanently bonds multiple belts together. This provides maximum cord support, heavy shock absorption, and stability. The belts are also engineered with patented banding processes that eliminate belt turnover and distribute load evenly across the drive. CZPT Cog-Band Belts minimize belt whip and provide stability. They also minimize belt turnover and rollover in heavy-duty industrial applications.
A classic v-belt is the most common and economical belt. Its nominal dimensions are 1/2″ to 1-11/2″ wide and 16″ to 400 inches long. The width is usually 40 degrees. Different organizations use different cross-sections to classify v-belts. The following table provides a general comparison of the 2 types. The Cogged V-Belt is designed to reduce belt whip by increasing the lateral rigidity of the belt.

Cogged v-belts provide superior environmental resistance

The patented design of the Dayco V-Belt provides maximum power transmission while combining the benefits of a cogged belt and raw-edge construction. The belt’s top cogged design helps increase air flow around it, preventing deterioration and extending its useful life. The belt’s three-ply design features neoprene impregnated fabric for superior durability and a specially-formulated polyester cord for increased strength and stability.
A variety of v-belts are available, with cogged and notched versions presenting unique characteristics. Cogged V-belts are more flexible than uncogged versions and feature ‘X’-shaped grooves for enhanced heat dissipation. Cogged V-belts are interchangeable with conventional v-belts, although their ‘X’ design is most common. Hexagonal v-belts are a popular option for applications where traction is needed.
Another type of Cogged V-belt is designed specifically for outdoor power equipment. This v-belt is brown, with smooth clutching covers. Its aramid cord is very strong and provides superior durability in adverse conditions. Cogged V-belts can withstand severe shock loads and are therefore ideal for outdoor power equipment. Furthermore, they offer superior environmental resistance, minimal stretch, and a long service life.
A Cogged V-belt is composed of tensile cords that are supported by a rubber stock. Different manufacturers use different synthetic rubber stocks for this purpose. These materials help to extend the belt’s operating temperature range and resist premature failure. In addition to tensile cords, the belt’s body is covered with a fabric cover. The fabric is treated to form a chemical bond with the core materials, which allows it to withstand constant bending.