BMW 11-31-9-452-397 Tensioner

( Manufacturer Part Number: 11-31-9-452-397 ), ( Part Type: Guide ), ( Genuine Oem: Yes ), ( Warranty: 1 Year ), ( Fitment Type: Direct Replacement ), ( Year: 2014 2015 2016 2017 2019 2020 ), ( Parts Included: Only Part Reference 28 On The Diagram Is Included ), ( Replaces Part Number: 11-31-8-600-125 )

Review BMW Genuine Tensioner Guide fits 2014–2020

The BMW 11-31-9-452-397 tensioner is an essential component of the serpentine belt system in various BMW models. This tensioner, also known as the pulley or idler pulley, plays a critical role in maintaining the correct tension of the serpentine belt to ensure the efficient operation of the engine accessories.

The BMW 11-31-9-452-397 tensioner is meticulously engineered using high-quality materials to deliver exceptional durability and performance. It is designed with a robust metal construction that can withstand the rigors of daily driving, while its precision-machined surface ensures a perfect fit and smooth belt movement.

The tensioner features an innovative design that automatically adjusts belt tension as the engine speed varies. This design helps to reduce belt slippage, prolonging the belt's lifespan and ensuring optimal performance. The tensioner also includes a built-in pulley that drives the water pump, power steering pump, and alternator, making it a vital component of the engine's accessory drive system.

Installing the BMW 11-31-9-452-397 tensioner is a straightforward process, making it an excellent choice for DIY enthusiasts. The tensioner comes complete with all necessary hardware, including bolts and washers, for a hassle-free installation. Additionally, the tensioner is backed by BMW's unwavering commitment to quality, ensuring that it meets the highest standards of performance and reliability.

In summary, the BMW 11-31-9-452-397 tensioner is a vital component of your BMW's engine system, delivering exceptional durability, performance, and ease of installation. Its innovative design and high-quality construction make it a must-have for any BMW enthusiast seeking to maintain their vehicle's optimal performance.

1. Reliability: BMW is known for manufacturing high-quality automotive components, and the tensioner is no exception. By replacing a worn-out or failing tensioner with a new BMW original part, you can ensure the optimal performance and longevity of your engine.

2. Peace of Mind: Investing in a genuine BMW tensioner can provide you with peace of mind, knowing that you are using an authentic and reliable component that is specifically designed for your vehicle.

3. Potential Performance Improvements: A new tensioner can improve the performance of your BMW engine by ensuring that the timing belt is properly tensioned and running smoothly. This can lead to better fuel efficiency, increased power, and a smoother driving experience.

1. Cost: BMW original parts can be more expensive than aftermarket alternatives. The price of the BMW 11-31-9-452-397 tensioner may be a significant investment for some BMW owners.

2. Availability: BMW original parts may not always be readily available at local dealerships or auto parts stores. This could require you to order the part online or wait for it to be shipped, which could potentially delay the repair process.

3. Installation: Installing a new tensioner can be a complex and time-consuming process, especially if you are not experienced in working on cars. It may be necessary to pay a mechanic to install the part, which could add to the overall cost.

In conclusion, the decision to buy a BMW 11-31-9-452-397 tensioner depends on your priorities as a BMW owner. If you value reliability, peace of mind, and potential performance improvements, then investing in a genuine BMW tensioner may be the best choice for you. However, if cost and availability are major concerns, then you may want to consider an aftermarket alternative. Ultimately, it is important to weigh the pros and cons carefully and make an informed decision based on your individual circumstances and needs.

Recommendation: If you are committed to using genuine BMW parts and have the budget for it, then purchasing the BMW 11-31-9-452-397 tensioner is a recommended option. However, if cost is a concern, then you may want to explore aftermarket alternatives while still ensuring that the part meets BMW's specifications and quality standards. It is always a good idea to consult with a trusted mechanic or BMW dealership for advice and recommendations based on your specific situation.

Details:

In-stock orders ship within 24 hours. Electrical parts are not returnable. Parts must be resalable and in the original packaging. Shipping Carrier substitutions may be made at our determination in an attempt to reduce shipping cost the customer.

Genuine BMW Parts.

part #: 11319452397 prices

• $35.02-$124.95

specifications tensionpull:

• for makes: Bmw
• for years: 2014-2020
• mpn: 11-31-9-452-397
• part type: Guide
• genuine oem: Yes
• warranty: 1 Year
• fitment type: Direct Replacement
• year: 2014 2015 2016 2017 2019 2020
• parts included: Only Part Reference 28 On The Diagram Is Included
• replaces part number: 11-31-8-600-125

shipping tensionpull:

• class: Standard, Expedited, One-day
• type: Fixed
• cost: $20.25
• transit: 4-11 Days
• service: Standard, Expedited, Overnight

seller tensionpull:

• rating: 99.0%
• city: Irvine, California
• # reviews: 1112

offer tensionpull:

• started: June 12, 2025
• options: Ship-to-home
• availability: In Stock
• sold: 0
• quantity: 1

returns tensionpull:

• policy: Returns Accepted
• paid by: Buyer
• time: 30 Days

general tensionpull:

• Engines Engine Parts > Timing Components Kits > Tensioners Pulleys
• condition: New

payments tensionpull:

• credit card: Discover
• wallet: Google-pay
• other

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