Pay in 4 interest-free payments
Engine Belt Tensioner Assembly to suit Mercedes-Benz W166 C218 W205 Diesel
- Buy this and get 3% back as Kren store credit (up to $100 per order).
- It's added to your account 21 days after your order ships. We'll email you when it lands.
- Sign in at checkout and tick Apply store credit. Credit lasts 12 months.
Leave your details and we'll call you back — no pressure, just answers.
✅ We've Got Your Details!
One of our team will call you back shortly.
A worn tensioner squeals, chatters and can throw the belt. Replace it with this direct-fit unit to keep the drive belt at the right tension.
Key details
- Sold individually
- Direct replacement — uses the factory mounting points and connections
- Shipping weight approx. 0.8 kg
- Professional fitting recommended
Specifications
| Part Type | Belt Tensioner Assembly |
| Reference Number | 6512002170 |
| Material | Steel and aluminum with polymer pulley |
| Pulley Diameter | Standard factory specification |
| Dimensions | 8.0 x 14.5 x 12.0 cm |
| Mounting | Bolt-on direct replacement |
Fitment
| Make | Model | Details | Years |
|---|---|---|---|
| Mercedes-Benz | C-Class | W205 diesel models | 2014–2021 |
| Mercedes-Benz | CLS-Class | C218 diesel models | 2011–2018 |
| Mercedes-Benz | CLS-Class | C257 diesel models | 2018–2023 |
| Mercedes-Benz | GLE-Class | W166 diesel models | 2015–2019 |
| Mercedes-Benz | GLS-Class | X166 diesel models | 2016–2019 |
| Mercedes-Benz | M-Class | W166 diesel models | 2012–2015 |
| Mercedes-Benz | GL-Class | X166 diesel models | 2013–2016 |
Not sure it fits? Send us your rego and we'll confirm before you order.
In the box
- 1 x Belt Tensioner Assembly
Delivery
Stocked in Australia and delivered to NZ in 9–15 business days, tracked.
Shipping Information
Most orders land in 5–12 business days. We'll keep you updated at every step of the journey.
The Kren Bits journey:
- Order received — Day 0
- With fulfilment — Day 1–2
- Heading to courier — Day 2–4
- Shipped — Day 3–7
- Almost there — Day 5–10
- Delivered — Day 5–14
Where your part ships from:
Your order ships from the closest warehouse with available stock across our six-warehouse network — NZ, AU, TH, UK, US, and CN.
We email you at every real milestone — order received, with fulfilment, heading to courier, shipped, almost there, delivered. No chasing, no vague waits.
For more details, visit our Track Your Order page.
Product Enquiry
Got a question about this product? Need to check fitment for your vehicle? Fill in the form below and we'll get back to you within 24 hours.
Customer reviews are on their way. Email accounts@krenbits.com to share your experience.