Coolant Expansion Tank Cap for Mercedes-Benz W203 W210 W211

$25.82 $29.18

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Radiator Coolant Expansion Tank Cap for Mercedes-Benz

Keep your Mercedes-Benz cooling system running efficiently with this precision-engineered Radiator Coolant Expansion Tank Cap. Manufactured to original factory specifications, this direct-fit replacement cap ensures a perfect seal on your coolant reservoir — helping maintain proper system pressure and optimal engine temperature management.

Key Features

OEM-Spec Fit: Engineered to match original factory specifications for a seamless, secure fit
High-Quality Material: Made from durable, heat-resistant black plastic built to withstand under-hood conditions
Easy Installation: Direct drop-in replacement — no modifications required
Stable Performance: Consistent, reliable seal to maintain correct coolant system pressure
Color: Black
Dimensions: 70mm x 40mm x 15mm

OEM Part Numbers

2105010615 / 210 501 06 15
2105010715 / 210 501 07 15
0005018215 / 000 501 82 15
Manufacturer Part Number: TOPT1111002

Compatible Vehicles

Series	Model	Years
W129	300SL, 500SL, 600SL, SL320, SL500, SL600	1990–2002
W140	300SE, S320, 400SE, S420, 500SEL, S500, 600SEL, S600, CL500, CL600, 300SD, S350	1992–1999
W170	SLK320, SLK320 AMG	2001–2004
W171	SLK280, SLK300, SLK350, SLK55 AMG	2006–2008
W202	C280, C36 AMG, C43 AMG	1994–2000
W203	C230, C240, C280, C320, C350, C32 AMG (incl. 4X, Coupe, Wagon)	2001–2007
W204	C300, C350, C63 AMG	2006–2009
W208	CLK320, CLK430, CLK55 AMG	1998–2003
W209	CLK320, CLK350, CLK500, CLK550, CLK55 AMG	2003–2008
W164	ML350, ML500, ML550, GL450	2006–2009
W210	E300D, E320, E420, E430, E55 AMG (incl. Wagon)	1996–2002
W211	E320, E350, E500, E550, E55 AMG (incl. 4X, Wagon)	2003–2009
W215	CL500, CL55 AMG, CL600, CL65 AMG	2000–2006
W220	S430, S500, S55 AMG, S600, S65 AMG (incl. 4X)	2000–2006

What's in the Box

1 × Radiator Coolant Expansion Tank Cap

Made in China.

Note: Please allow a 1–3 cm variance due to manual measurement. Colors may vary slightly depending on your display settings and lighting conditions.

Frequently Asked Questions

Q: Will this coolant expansion tank cap fit my Mercedes-Benz W211 E350?

A: Yes! This cap is fully compatible with the W211 E350 (2006–2009), including 4X and wagon variants. It is also compatible with a wide range of W-series Mercedes-Benz models from W129 through W220. Always verify your OEM part number (2105010615, 2105010715, or 0005018215) against your existing cap before ordering for guaranteed fitment.

Q: Is this a genuine OEM Mercedes-Benz part?

A: This is a high-quality aftermarket replacement cap manufactured to original factory specifications. It is not an OEM Mercedes-Benz branded part, but it matches OEM dimensions and part numbers (2105010615, 2105010715, 0005018215) for a precise, direct-fit replacement.

Q: How do I install this radiator coolant expansion tank cap?

A: Installation is straightforward — simply align the cap with your coolant expansion tank reservoir and twist to secure. No special tools are required. Always ensure the engine is cool before handling any cooling system components.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.

We prioritize quality in selecting the materials for our items, choosing premium fabrics and finishings that ensure durability, comfort, and timeless appeal.

We strive to process and ship all orders in a timely manner, working diligently to ensure that your items are on their way to you as soon as possible.