O-Ring 19.8 X 2.3 Waterpump M-II

Water Pump O-Ring 19.8 x 2.3 mm — Eberspaecher Hydronic M-II

A small part with a big job. This OEM-spec water pump O-ring provides the critical coolant seal at the pump interface on Eberspaecher Hydronic M-II heaters. When coolant seeps past a worn or cracked O-ring, it can lead to reduced heating performance, pump damage, and heater faults. Replacing it during any pump service is fast, inexpensive insurance against future leaks.

When to Replace

• Any time the water pump is removed or replaced
• When coolant leakage is identified at the pump connection
• As part of a scheduled Hydronic M-II maintenance service

Specifications

• Dimensions: 19.8 mm inner diameter x 2.3 mm cross-section
• SKU: 22.1000.70.0017
• Compatible with Eberspaecher Hydronic M-II heater series

Installation Note

Clean the seating surface thoroughly before installing the new O-ring. Lightly lubricate with coolant-compatible grease prior to fitting. Do not reuse old O-rings — always replace when the pump is serviced.