Gates 43158 Engine Water Pump

Overview

The Gates 43158 engine water pump is built for Mercedes-Benz cooling system service with OE-quality fit and tested sealing performance. It uses a cast aluminum housing, a plastic impeller, and accessory-belt drive construction for standard rotation applications.

Compatible With Mercedes-Benz E300, C350, E350, ML350, R350, and SLK350 applications listed below, this water pump is a practical replacement for cooling system maintenance. The Gates Water Pump (Standard) line focuses on durable construction and functional testing before release.

Key Features

• Cast aluminum housing for a rigid pump body.
• Plastic impeller with standard rotation.
• Accessory belt driven, not timing belt driven.
• Pulley included for a more complete service part.
• Factory-style fitment for listed Mercedes-Benz applications.
• Part number 43158 for easy identification.

Detailed Description

Gates 43158 is an engine water pump intended for cooling system replacement on select Mercedes-Benz vehicles. The pump is manufactured with premium alloy materials and undergoes seal, bearing, and leakage testing to verify function before shipment. Its cast aluminum housing and plastic impeller are paired with standard rotation and accessory belt drive design, while the included pulley supports a straightforward replacement process. This part cross-references Mercedes-Benz OE numbers 943158 and A2762000401 for the same application.

Use Gates 43158 when servicing a Mercedes-Benz E300, C350, E350, ML350, R350, or SLK350 cooling system and you need a direct replacement water pump with OE-quality fit. The Gates 43158 part number is also useful when matching service records or confirming the correct replacement against existing catalog data.

Common Problems It Can Address

• Coolant leakage from a worn pump seal or housing.
• Overheating caused by reduced coolant circulation.
• Noisy operation from worn bearings.
• Poor pump performance from impeller wear or damage.
• Cooling system service needs during routine maintenance.

Installation Notes

Verify the vehicle application against the listed fitment before installation. This pump is accessory-belt driven and not timing-belt driven, so confirm the drive layout matches the original part. The package includes a metal gasket and two rubber gaskets; inspect mating surfaces and replace coolant as required during service.

Quality Assurance

Gates tests seals, bearings, and leakage on each new water pump and builds this part to OE-quality fit standards. The Water Pump (Standard) line is positioned for dependable cooling system service on the listed Mercedes-Benz applications.