Eberspacher heater D5W heat exchanger o ring | 32075137

The Eberspacher heater D5W heat exchanger O-ring is a rugged gasket designed to seal critical cooling passages in early non-hydronic D5W models. Measuring 81mm by 3mm, this O-ring ensures safe, leak-free operation across several B5W and D5W series units (see compatibility below). Made from durable elastomer suitable for automotive heat exchangers, it resists heat, pressure, and vibration typical of mobile heating systems. Replacing the worn seal helps prevent coolant leaks, maintain performance, and extend the life of your heater. Easy to install with standard O-ring tooling, this part is a cost-effective upgrade for compatible Eberspacher units to keep your vehicle warm and reliable.