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Author Topic: Dimensions for O-rings inside heater matrix hose connectors (engine bay)  (Read 301 times)

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RallyArde

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    • Omega B2 2.2 16v
Dimensions for O-rings inside heater matrix hose connectors (engine bay)
« on: 25 May 2026, 16:27:26 »
So my heater matrix hose connectors on the bulkhead are leaking. I disconnected to hoses and found out that there are o-rings inside the connectors and in my case they were quite perished. From this forum I read that dimensions to rings inside the cabin are 14x3mm and the part number is 9194857, but what are the actual dimension for the o-rings in the engine bay side? Or are they same as inside the cabin ones?
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RallyArde

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    • Omega B2 2.2 16v
Re: Dimensions for O-rings inside heater matrix hose connectors (engine bay)
« Reply #1 on: 27 May 2026, 16:25:46 »
So... I sorted this out, used those 14x3 O-rings and let the engine run completely warm, there was no sign of leak anymore on those connectors :)
Also replaced HBV and auxilary water pump to the radiator, before filling the system :y
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