Coolant Auxiliary Water Pump For Mercedes Benz GLC300 C300 2015-2019

Keep engine temperatures stable with this precise auxiliary water pump engineered exclusively for your Mercedes‑Benz cooling circuit. When the main thermostat opens or turbocharger heat loads increase, this secondary pump maintains consistent coolant flow to the heater core and exhaust passages, preventing localized overheating, reducing cylinder wall stress, and restoring full cabin warmth. Designed as a direct OE replacement, it secures into place using factory mounting points and mates with existing wiring harnesses, making it a straightforward fix for bypass pumps that have lost efficiency or developed internal wear.

Benefits & Practical Tips

• Targeted Diagnostics: Inconsistent interior temperatures, lingering hot spots near the turbo, or low-pressure warning indicators often point to a failing auxiliary unit rather than a complete radiator overhaul.
• Maintenance Sequence: Flush the entire cooling loop and replace the main serpentine belt idlers simultaneously to guarantee balanced flow velocity and extend the lifespan of the new impeller seals.
• System Bleeding: Route the purge hose upward and run the engine with the heater blower on max until air bubbles cease escaping; trapped air is the leading cause of premature seal degradation in these modules.

Specifications

Crankcase‑grade stainless steel internals resist corrosion from modern G12/G13 coolant blends while sustaining factory-rated pressure curves. The connector casing features reinforced pins to prevent voltage drop during cold-start cranking, and the silicone O-ring gasket is formulated for repeated thermal expansion cycles.

• OEM Cross‑Reference: A000 500 26 86 / A000 500 13 86 / 000 500 26 86
• Vehicle Compatibility: Mercedes‑Benz GLC300 (2016–2019, 2.0L) & C300 (2015–2018, 2.0L)
• Motor Type: Brushless DC with PWM controller interface
• Installation: Plug‑and‑play wiring, direct bolt‑on flange

Package Includes

• 1 × Coolant Auxiliary Water Pump

Important Reminders

Always verify your chassis code and production month before installation. Manufacturers occasionally update the external housing geometry without altering internal flow characteristics; either design ships standard and functions identically. Contact our support team with your VIN if you need cross‑reference confirmation prior to checkout.