Genuine Mercedes-Benz Radiator Cap

Cooling Radiator Cap

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5 Radiator Caps found

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Mercedes-Benz Radiator Cap
Part Number: 203-988-01-35
$3.42 MSRP: $4.70
You Save: $1.28 (28%)
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Product Specifications
- Other Name: Cap; Radiator Cap
- Replaces: 203-988-00-35, 202-988-02-35
Fits the following Mercedes-Benz Models:
- C220 | 1994-1996 | Base | 4 Cyl 2.2 L GAS
- C230 | 2002-2007, 1997-2000 | Base, Kompressor, Sport | 4 Cyl 1.8 L GAS, 4 Cyl 2.3 L GAS, 6 Cyl 2.5 L FLEX, 6 Cyl 2.5 L GAS
- C240 | 2001-2005 | 4Matic, Base | 6 Cyl 2.6 L GAS
- C280 | 2006-2007, 1994-2000 | 4Matic, Base, Luxury | 6 Cyl 2.8 L GAS, 6 Cyl 3.0 L GAS
- C32 AMG | 2002-2004 | Base | 6 Cyl 3.2 L GAS
- C320 | 2001-2005 | 4Matic, Base | 6 Cyl 3.2 L FLEX, 6 Cyl 3.2 L GAS
- C350 | 2006-2007 | 4Matic, Luxury, Sport | 6 Cyl 3.5 L GAS
- C55 AMG | 2005-2006 | Base | 8 Cyl 5.5 L GAS
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Mercedes-Benz Reservoir Cap
Part Number: 163-500-00-06
$21.35 MSRP: $29.50
You Save: $8.15 (28%)
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Product Specifications
- Other Name: Filler Cap; Cap
Fits the following Mercedes-Benz Models:
- ML320 | 1998-2003 | Base | 6 Cyl 3.2 L GAS
- ML350 | 2003-2005 | Base | 6 Cyl 3.7 L GAS
- ML430 | 1999-2001 | Base | 8 Cyl 4.3 L GAS
- ML500 | 2002-2005 | Base | 8 Cyl 5.0 L GAS
- ML55 AMG | 2000-2003 | Base | 8 Cyl 5.5 L GAS
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Mercedes-Benz Expansion Tank Cap
Part Number: 210-501-06-15-64
$26.84 MSRP: $37.00
You Save: $10.16 (28%)
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Product Specifications
- Other Name: Cap; Radiator Cap, Reservoir Cap, Reservoir Tank Cap
- Replaces: 000-501-82-15, 210-501-02-15, 210-501-06-15, 210-501-03-15, 210-501-07-15, 210-501-05-15
Fits the following Mercedes-Benz Models:
- A220 | 2019-2022 | 4Matic, Base | 4 Cyl 2.0 L GAS
- A35 AMG | 2020-2021 | 4Matic | 4 Cyl 2.0 L GAS
- AMG GT | 2017-2021 | Base | 8 Cyl 4.0 L GAS
- AMG GT 43 | 2021-2023 | Base | 6 Cyl 3.0 L MILD HYBRID EV-GAS (MHEV)
- AMG GT 53 | 2019-2023 | Base | 6 Cyl 3.0 L MILD HYBRID EV-GAS (MHEV)
- AMG GT 63 | 2023, 2019-2021 | Base | 8 Cyl 4.0 L GAS
- AMG GT 63 S | 2023, 2019-2021 | Base | 8 Cyl 4.0 L GAS
- AMG GT 63 S E Performance | 2023 | Base | 8 Cyl 4.0 L PLUG-IN HYBRID EV-GAS (PHEV)
- AMG GT Black Series | 2021 | Base | 8 Cyl 4.0 L GAS
- AMG GT C | 2018-2021 | Base | 8 Cyl 4.0 L GAS
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Mercedes-Benz Radiator Cap
Part Number: 123-501-02-15-64
$22.57 MSRP: $31.00
You Save: $8.43 (28%)
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Product Specifications
- Other Name: Cap, Filler Cap
- Replaces: 123-501-02-15
Fits the following Mercedes-Benz Models:
- 190D | 1984-1989 | 2.2, 2.5, 2.5 Turbo | 4 Cyl 2.2 L DIESEL, 5 Cyl 2.5 L DIESEL
- 190E | 1991-1993, 1984-1989 | 2.3, 2.3-16, 2.6 | 4 Cyl 2.3 L GAS, 6 Cyl 2.6 L GAS
- 260E | 1987-1989 | Base | 6 Cyl 2.6 L GAS
- 500SEC | 1984-1985 | Base | 8 Cyl 5.0 L GAS
- 560SL | 1986-1989 | Base | 8 Cyl 5.6 L GAS
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Mercedes-Benz Radiator Cap
Part Number: 164-501-00-15
$56.40 MSRP: $79.00
You Save: $22.60 (29%)
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Fits the following Mercedes-Benz Models:
- B Electric Drive | 2015 | Base | BATTERY EV (EV/BEV)
- B250e | 2016-2017 | Base | BATTERY EV (EV/BEV)
- ML450 | 2010-2011 | Hybrid 4Matic | 6 Cyl 3.5 L FULL HYBRID EV-GAS (FHEV)
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Mercedes-Benz Radiator Cap

The Mercedes-Benz Radiator Cap ensures that coolant is held under precise pressure so that the engine can work hard without overheating, sealing the cooling system, then releasing or taking back fluid as temperatures swing to keep a steady flow. This Radiator Cap, small but tough, sits on top of the radiator, locks in place at approximately 16 PSI and raises the boiling point of coolant so long climbs on the highway or busy city traffic are never enough to push temps into the danger zone. When heat is generated, a spring inside the cap releases for a period, venting off surplus vapor to the overflow tank, drawing liquid back in when the engine cools again, eliminating air pockets and protecting steady circulation. Because the design is a universal pressure standard for the entire brand lineup, drivers can rely on one cap that does not let them down instead of having to sort through model-specific variants, making maintenance smoother and confidence higher on every trip. Beyond this ingenious piece of hardware, Mercedes-Benz is the history of innovation, luxury and intelligent technology that began in 1926 and continues to set benchmarks to this day. The company combines elegant styling with such cutting-edge systems as MBUX voice-controlled infotainment and the MB.OS platform that incorporates driver assist, battery management, artificial intelligence and connectivity features into a single digital brain. Energy recovery in modern electric and hybrid vehicles reflects the dedication to efficiency and the steady pursuit of comfort and security that allows owners to enjoy performance without compromise. With such balanced engineering values, the star logo still symbolizes trust on roads around the world.

Genuine parts are built to last. These components go through tough factory testing, so you can trust they will hold up over time. At MBPartsGiant.com, finding Mercedes-Benz Radiator Cap is quick and simple. We keep a massive inventory in stock with low prices that are hard to beat. Just order online to get a real manufacturer's warranty with every single part. Returns won't be a headache either, thanks to our no-hassle policy. If you are in a rush, we provide expedited shipping to get your vehicle back on the road. Don't wait. Finish your repairs today and keep your Mercedes-Benz running like new. Explore the catalog now.