Dometic 385311658 Flush Ball Seal Kit for 310 Toilets - OEM Fit

In this review of the Dometic 385311658 Flush Ball Seal Kit for 310 toilets we look at who will benefit most and why the genuine OEM part matters. The bottom line: this kit is aimed at RV owners and maintenance technicians who need a correct-fit replacement seal that installs quickly and restores proper flushing function. Customers repeatedly praise the ease of installation and the accurate fit, making it an efficient repair option when the original seal shows wear or leaks.

Key Features

• Genuine OEM parts: Includes the original manufacturer seal and instructions only, ensuring compatibility and the correct sealing profile for Dometic 310 toilets.
• Quick replacement: The kit is straightforward to fit and most users report a swap takes around 10 minutes, minimizing downtime.
• Durable materials: As an OEM item it is built to match the quality of the original component for long-term performance.
• Simple contents: The kit contains the seal and instructions only, keeping the repair focused and avoiding extra parts that are not required.
• Consistent fit: Customers note the seal matches the original dimensions, reducing the need for adjustments during installation.

Who It's For

The Dometic 385311658 kit is best for RV owners, fleet operators, or DIYers maintaining Dometic 310 toilets who want a drop-in replacement that mirrors the original factory part. It is ideal when the existing flush ball seal shows age-related wear, hardening, or leaking and a direct OEM match is preferred to aftermarket alternatives.

It is not for someone looking for a comprehensive repair kit with multiple spare parts or for toilets outside the Dometic 310 series. If you need an overhaul with added components beyond the seal and instructions, consider a full service kit rather than this seal-only offering.

Pros & Cons

Pros

• Easy installation reported by many users, allowing a quick field repair.
• OEM fit and material quality provide a reliable match to the original seal.
• Compact kit contents make the replacement process straightforward and focused.

Cons

• Some customers report varied water retention and occasional leakage after replacement, so results may depend on installation condition and toilet age.

Specifications

Our Verdict

The Dometic 385311658 Flush Ball Seal Kit is a sensible purchase for anyone needing a faithful OEM replacement for a Dometic 310 toilet. Its correct fit and simple installation make it a practical value for quick repairs, though users should check the surrounding hardware and installation to avoid persistent leakage. Overall it is a reliable choice when an original-style seal is required.

Frequently Asked Questions

Does this kit include everything needed to replace the flush ball seal?
The kit includes the seal and instructions only, intended as a direct replacement for the existing flush ball assembly.

How long does installation take?
Most users report installation can be completed in about 10 minutes when following the instructions and with basic tools.

Will this stop all leaks?
When installed correctly it restores the original sealing surface, but persistent leakage can result from related worn parts or improper seating, so inspecting surrounding components is recommended.