Upgrade or repair your Dometic toilet with the genuine Dometic Slow-Close Toilet Seat (Part # 385312204 / 385312205). Designed for a quiet and controlled close, this premium replacement seat prevents slamming, reducing wear and noise—perfect for marine and RV bathrooms. This seat is a direct replacement for the 385311005 and 385311006 seats. It Fits all Magnum Opus, 3000, 8700, 4300, & 4400 series toilets. Features: Slow-Close Mechanism – No more loud slams; closes gently every time. Durable Construction – Built for marine and RV environments. Easy Installation – Direct replacement for select Dometic toilet models. Comfortable Design – Ergonomically shaped for added convenience.
