Whale 12v Water Pump GP1002 - 10 l/pm. It uses the original Thetford bracket - all you do is loop the 12V feed cable back along the body of the pump & trap them both with the oval bracket. The Thetford C3 model is designed to run on a pressurised system (no 12V pump) and the C4 is a manual flush (no 12V pump).
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