This is a budget-friendly imported spare part from the brand 4U, designed for the 4-cylinder M40 engines found in the lightweight and agile bodies of the BMW 3 Series E36 (316i, 318i). Located at the very front of the engine block, this part continuously circulates the coolant (antifreeze) between the radiator and the engine, powered by the V-belt. It is the sole heart that protects your engine from overheating. An old water pump that has worn out its inner bearing or has a blown seal can cause a "whirring" noise from the front of the engine, lead to water leaking from under the vehicle, and ultimately cause your E36 to blow a gasket. With the economical and tested quality of 4U, put your overheating fears on the shelf and keep your engine cool.
- Economic Overheating Shield: The highest price/performance (P/P) repair alternative for M40 users who do not want to pay astronomical prices for original or German pumps.
- Quiet and Smooth Bearing: Eliminates the annoying "hum" and "bearing" noises that increase with the engine speed of the worn pump, ensuring quiet and smooth operation of the engine.
- Perfect Circulation: The fan blades are designed to OEM standards; even at idle, it powerfully pumps antifreeze to the farthest corners of the engine block, stabilizing the temperature.
- Leakage Assurance: Comes with a special rubber O-ring gasket included with the product/packaging. It cuts off annoying water leaks dripping down from the front engine cover like a knife.
Technical Details
| Brand |
4U (Imported Price / Performance Product) |
| Product Code |
13607BW |
| Operation Type |
Mechanical (V-Belt / Pulley Driven) |
| Package Contents |
Water Pump + Installation Gasket (O-Ring) |
| Compatibility |
BMW E36 Chassis (Primarily M40 Coded 4 Cylinder Engines) |
| Possible OEM References |
11 51 1 734 602 / 11 51 1 727 641 |
Frequently Asked Questions (FAQ)
My car is not losing water, but there is a rubbing/humming noise coming from the front of the engine at idle. Could the water pump be faulty? Yes, the first sign of failure in the water pump is usually not leaking water, but the bearing inside breaking down and making noise. If you remove the belt and turn the water pump pulley by hand and feel a gap, rattling, or resistance, the pump is about to seize. It should be replaced urgently before it starts leaking or overheating.
Do I need to order a gasket (O-ring) along with this product? No, this 4U branded product comes with the special rubber O-ring gasket needed for installation. During installation, simply discard the old, crushed gasket and use this new one. There is no need to use liquid gasket.
My car has a 6-cylinder engine (M50 / M52). Will this pump fit my vehicle? **IT WILL NOT FIT.** The designs of the water pumps for BMW's 4-cylinder engines and 6-cylinder engines, as well as their fan diameters and body structures, are completely different. This product is only for the older generation 4-cylinder (M40, etc.) engines. Please ensure your vehicle's engine code before ordering.
