Mercedes-Benz Genuine Mercedes-Benz Coolant Expansion Tank for R231 SL550 (2014) vs Mahle Coolant Expansion Tank for Mercedes-Benz R231 SL-Class
Buy the Genuine Mercedes-Benz tank if you want the exact factory part for a 2014 R231 SL550 and don't mind paying more. Buy the Mahle tank if you want a known aftermarket brand at a lower price. No prices were provided for either part, so compare current store prices on Deal.ai before ordering.
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Mercedes-Benz Genuine Mercedes-Benz Coolant Expansion Tank for R231 SL550 (2014)
Choose the Genuine Mercedes-Benz tank if you want the same part number (2305000149) the car was built with and factory-level fit.
Pros
- Exact factory part for the 2014 R231 SL550
- OE fit, function and quality
- Latest version of the original design
- Dealer-network warranty support
Cons
- Highest price of the two
- Fewer sellers, so less price competition
What separates them
| Mercedes-Benz Genuine Mercedes-Benz Coolant Expansion Tank for R231 SL550 (2014) | Mahle Coolant Expansion Tank for Mercedes-Benz R231 SL-Class | |
|---|---|---|
| Brand type | Mercedes-Benz, the vehicle manufacturer | Mahle, an aftermarket parts supplier |
| Part number | 2305000149 / A2305000149, factory number | Mahle's own part number, not listed here |
| Fit guarantee | OE fit and function for the R231 SL550 | Made for R231 SL-Class; confirm SL550 fitment |
| Price | Usually the highest of the options | Typically lower than the dealer part |
| Availability | Ships from the closest warehouse, listed as shipping tomorrow | Depends on the store |
| Warranty | Backed through the Mercedes dealer network | Mahle's own warranty terms |
| Listed dimensions | Not listed | 45 cm x 24 cm x 14 cm |
Price history
- Mercedes-Benz Genuine Mercedes-Benz Coolant Expansion Tank for R231 SL550 (2014): lowest $54.79 on Nov 1 at AutohausAZ.
- Mahle Coolant Expansion Tank for Mercedes-Benz R231 SL-Class: lowest $61.70 on Nov 1 at FCP Euro.
Prices at every store
Mercedes-Benz Genuine Mercedes-Benz Coolant Expansion Tank for R231 SL550 (2014)
- AutohausAZCheck price at AutohausAZ
- eBayCheck price at eBay
- mboemparts.comCheck price at mboemparts.com
Mahle Coolant Expansion Tank for Mercedes-Benz R231 SL-Class
- AutohausAZCheck price at AutohausAZ
- FCP EuroCheck price at FCP Euro
Specs compared
| Spec | Mercedes-Benz Genuine Mercedes-Benz Coolant Expansion Tank for R231 SL550 (2014) | Mahle Coolant Expansion Tank for Mercedes-Benz R231 SL-Class |
|---|---|---|
| Width | No information | 14 cm |
| Vehicle Make | Mercedes-Benz | — |
| Fluid Type | Coolant | — |
| Primary Function | Cooling | — |
| Durability | OE fit, function, and quality | — |
| Type | Engine Coolant Reservoir | — |
| Subtype | Engine Coolant Reservoir | — |
| Intended Use | Engine cooling | — |
| Length | — | 45 cm |
| Height | — | 24 cm |
Questions and answers
- Is the Mahle tank as good as the genuine Mercedes part?
- Mahle is a major OEM supplier, so quality is generally solid. The genuine tank is still the exact part the car was built with, which matters most on a low-volume model like the SL550.
- Will the Mahle tank fit a 2014 R231 SL550?
- It is listed for the R231 SL-Class, but confirm the SL550 application with the seller before ordering. The genuine part is listed specifically for the 2014 SL550.
- Which one lasts longer?
- Both are plastic coolant reservoirs that fail from heat and pressure cycles. The genuine part matches the original design; Mahle is a reputable aftermarket alternative. Neither comes with a published lifespan.
- Is the genuine part worth the extra money?
- On a 2014 SL550, yes for most owners. The price gap is usually modest, and the exact factory fit removes any doubt about fitment.
- What else should I replace with the tank?
- Check the tank cap and the coolant hoses while the system is open. A new cap is cheap insurance against a repeat leak.