Fetechmate RV Toilet Valve Kit 2-Pack for Dometic 300–321 Series — Flush Ball Seals & Hardware

Fetechmate's 2-pack 385311641 valve with 385311658 flush ball seals is a direct-fit replacement kit for Dometic 300/301/310/311/320/321 pedal-flush RV toilets, designed to stop leaks and restore reliable flush operation. Replacing a worn valve or seal in an RV toilet is one of the fastest ways to stop leaks, reduce odors and avoid inconvenient breakdowns while traveling. This Fetechmate kit includes two complete valve assemblies and matching flush ball seals plus all mounting hardware, giving you a ready-to-install repair that mirrors factory fit and function for many popular RV, camper and marine vacuum/pedal-flush toilets.

How will this kit stop leaks and sewer smells?

The kit uses upgraded integrated sealing geometry and factory pressure testing to create a tight barrier at the valve interface and the flush-ball gap. That means less dripping, less backflow and fewer smells entering the living space.

• Enhanced sealing surfaces on the 385311641 valve housing
• Precision 385311658 flush ball seals to prevent flush-gap leakage
• Included stainless mesh filters block debris that can damage seals
• Factory pressure-tested components reduce risk of immediate failure

Will these parts fit my Dometic or Sealand toilet?

This replacement set is engineered to match common OEM dimensions for Dometic 300, 301, 310, 311, 320 and 321 series pedal-flush toilets and many Sealand, Traveler and Vacuflush systems. It’s intended as a direct swap for original-style valve and flush-ball seal assemblies.

• Direct-fit for Dometic 300–321 series pedal-flush models
• Compatible with many Sealand and Traveler vacuum/pedal systems
• Designed to avoid the fitment problems of generic aftermarket parts
• Check your existing part numbers against 385311641 / 385311658 before ordering

How simple is the installation process?

The kit ships with everything required for one-stop installation so you won’t need extra parts. Basic hand tools and a few minutes of attention to sealing surfaces are typically all that’s required to replace each valve and seal.

• Includes 2x valves, 2x flush ball seals, hose clamps and screws
• Four stainless mesh filters supplied for maintenance and debris protection
• Installer tip: clean mating surfaces and check hose clamps for proper torque
• If unsure, take photos of the original assembly to guide reinstallation

What materials and durability can I expect?

Fetechmate selects heavy-duty ABS and corrosion-resistant hardware to withstand the vibration and humidity conditions typical in RV and marine environments. The kit is manufactured to resist wear, maintain seal compression and extend service life compared with worn factory parts.

• Durable ABS valve bodies designed for long-term use
• Stainless hardware and mesh filters to resist corrosion
• Manufactured to OEM-style tolerances for dependable operation
• Backed by a 365-day quality guarantee and customer support

Who is this for? This Fetechmate replacement set is aimed at RV and boat owners, fleet technicians and DIY campers who need a reliable, direct-fit repair for common pedal-flush and vacuum-flush toilets. Choose this kit if you’re fixing leaks, eliminating odors, restoring flush performance or stocking service parts for maintenance on Dometic 300–321 series and like-model toilets. Always verify compatibility with your existing part numbers before installation.

FAQ

Q: Does this kit fit Dometic 310 and 311 toilets?

A: Yes. The 385311641 valve and 385311658 seals are designed to fit Dometic 300–321 series, including 310 and 311. Verify your current part number to be certain.

Q: Are tools or extra parts required to install the kit?

A: No extra parts are usually required; the kit includes valves, seals, clamps, filters and screws. Basic hand tools are recommended for installation.