Mercedes C300 Cooling Parts: Match the Engine and Package
Compare an M272 thermostat package and a separate C300 expansion tank. Check engine and chassis fitment, included parts and coolant requirements.
Compare an M272 thermostat package and a separate C300 expansion tank. Check engine and chassis fitment, included parts and coolant requirements.
Select by engine and chassis
The C300 name spans different engines and cooling-system configurations. Check the installed engine, chassis and retailer application row before choosing coolant or replacement parts. The vehicle’s required coolant specification governs fluid selection; a bottle included in one repair package is not a recommendation for every C300.
Consider the M272 thermostat package for the matching repair
ECS 2722000415KT is an M272 thermostat replacement package containing one Genuine Mercedes-Benz thermostat assembly, two securing bolts and one gallon of G48 coolant according to the merchant BOM. Choose this package only when the thermostat and coolant match your exact application and planned repair. The included gallon is package quantity, not cooling-system capacity.
Consider the expansion tank as a separate component
Genuine Mercedes-Benz 2045000749 is a coolant expansion tank. ECS lists selected C300 applications, including a 2008 C300 4Matic Luxury with the 3.0-liter 272.948 engine and 204.081 chassis. The tank excludes its lid and level sensor. Check whether those parts must be ordered separately; this offer is not a complete cooling-system kit.
Buy only the parts the repair requires
The thermostat package and expansion tank are separate buying options, not a mandatory bundle or a claim that both fit every C300. Confirm the configuration and required accompanying parts on the merchant page. Establish service quantity from the applicable vehicle information rather than the quantity supplied in a kit. EWP provides comparisons and referral links; the retailer handles the order and final fitment confirmation.
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Written by
Lee Shahin
Founder, European Wholesale Parts
Lee Shahin founded European Wholesale Parts in Pleasanton, California, after 18 years in the Mercedes-Benz and BMW parts trade. He came to the parts side from the shop floor: he opened a European repair shop in Northern California in the early 1990s, specialising in Mercedes-Benz and BMW, and grew it with his wife Laurie into a parts and delivery operation serving body shops and independent repair facilities across the region. Nearly two decades at the parts counter taught him where the expensive mistakes happen, and most of them are fluids: the wrong coolant in an aluminium block, an oil without the sheet approval the engine was designed for, a transmission topped with the wrong ATF. That is what he writes about here. Every article names the manufacturer specification by its exact designation, explains what the wrong fluid does mechanically, lists products that carry the approval, and gives the capacity and interval for the models and years the specification covers. When a reader needs a part sourced, the quote desk at European Wholesale Parts is where Lee and Laurie still answer the phone.