Belt-Driven Engine Water Pump for Mercedes-Benz C300 2.0L 2015-2018 2742000900
Let Northline Parts Do the Heavy Lifting for You!
Not sure which part you need? Our team can help you find the right replacement.
Parts Support Hours: Monday–Friday, 8:00 AM–5:00 PM CT
Live Chat: Available 24/7
I reached out for some replacement head bolts and they responded quickly with a few questions and cautionary information and is sending me some bolts. Great customer service! Thanks
Edward H. — Verified customer
Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
- Mercedes-Benz C300 Base Sedan 2.0L 2015-2018 - belt-driven pump
- Mercedes-Benz C300 4Matic Sedan 2.0L 2015-2018 - belt-driven pump
- Mercedes-Benz C300 Coupe / Convertible 2.0L 2017-2018 - matching build code only
- Mercedes-Benz C350e 2.0L - matching 2742000900 pump
- Mercedes-Benz GLC300 2.0L 2016-2019 - matching pump
- Mercedes-Benz E300 2.0L 2017-2019 - matching pump
- Mercedes-Benz SLK300 2.0L 2016 - matching pump
- Mercedes-Benz SLC300 2.0L 2017-2020 - matching pump
Product Overview
Coolant loss at the pump, bearing noise, pulley play, or overheating with poor coolant circulation can indicate a failing water pump after the thermostat, fan, leaks, and trapped air are ruled out. This mechanical pump circulates coolant through the 2.0-liter engine and cooling system.
Mercedes used build-code and pump variations even within the C300 range. Confirm the original pump is belt driven and match 2742000900, the pulley and housing shape, hose connections, and vehicle build information. Some applications with codes 806, 807, 808, or 809 may use a different pump.
Key Features & Performance
- Belt-driven coolant pump for compatible M274 applications
- Replaces a leaking or noisy mechanical pump assembly
- Application-specific housing and coolant connections
- Supports normal engine-cooling circulation after proper bleeding
- Pulley and sealing details must match the removed pump
Replaces Part Numbers
- 2742000900
- A2742000900
- 2742000307
Common Uses
- Replacing a pump leaking from the seal or housing
- Correcting confirmed bearing noise or pulley movement
- Restoring circulation after pump impeller failure
- Completing cooling-system service on a matching 2.0L Mercedes application
Technical Specifications
- Product Type: Engine Water Pump
- Drive Type: Belt driven
- Engine: Compatible 2.0L turbocharged applications
- Primary Reference: 2742000900
- Condition: New
- Replacement Type: Aftermarket
Installation & Fitment
- Allow the engine to cool completely and relieve cooling-system pressure
- Verify the old pump is belt driven before removing parts
- Inspect the drive belt, tensioner, thermostat, hoses, and coolant contamination
- Use the specified seal and torque sequence on clean mating surfaces
- Vacuum-fill or bleed the cooling system correctly and check operating temperature before driving
Compatibility Notice
Northline Parts does its best to list all known compatible models, but the correct part may fit an application not shown.
Model, production date, serial number, engine or equipment configuration, installed options, and previous repairs can affect fitment. Compare the original part, identifying numbers, dimensions, connections, and mounting details before purchase.
Frequently Asked Questions
Q: Can this pump fix an overheating C300? A: It can when diagnosis confirms poor circulation or pump failure. A thermostat, fan, coolant leak, air pocket, or engine issue can create the same symptom.
Q: Why must I check the vehicle build code? A: Mercedes changed pump configurations during production; model and year alone do not identify every variation.
Q: Does this replace an electric auxiliary pump? A: No. This listing is for the belt-driven engine water pump.
Q: Is coolant included? A: No. Use coolant that meets the vehicle specification and follow the approved filling and bleeding procedure.
Part Summary
keywords: Mercedes C300 water pump replacement, 2742000900 pump fit, C300 4Matic coolant pump, M274 belt driven water pump, Mercedes 2.0L overheating repair, GLC300 water pump, aftermarket Mercedes engine water pump
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, dimensions, and application before purchase.