Dometic RV Water Heater Tank Replacement Kit | 92099 | 6 Gal

Replace a failed water heater tank with the Dometic 92099 RV Water Heater Replacement Tank Kit — 6 Gallon. Genuine Dometic OEM service kit for select 6 and 9 gallon water heaters — includes replacement tank with foam insulation, pressure relief valve, electric heating element, and foam seals. Turn a failed water heater into a full rebuild without replacing the entire unit.

Compatible Water Heater Models

This tank replacement kit fits:

• WH-6GEA (6-gallon electronic gas/electric)
• WH-9GEA (9-gallon electronic gas/electric)

Save vs Full Water Heater Replacement

When the tank corrodes or fails but the combustion pan, control components, and combustion housing are still serviceable, this replacement kit lets you rebuild the water heater at a fraction of the cost of a full unit replacement.

What's Included

• Replacement tank
• Foam wrap insulation
• Pressure relief valve
• Electric heating element
• Foam seals

What's NOT Included

• Caulk — required to seal flanges to coach skin
• Pipe compound — required for threaded water heater component reassembly

Source separately for the installation.

⚠️ Mounting Point Notes

Important installation detail: the three mounting points do NOT come threaded. The holes are sized so that the mounting screws will self-thread into the softer aluminum. This is intentional design, not a defect.

⚠️ Installation Requires Full Water Heater Disassembly

Tank replacement is a significant procedure. It requires:

• Full water heater removal from the coach
• Disconnection of gas line, water lines, and 12V/120V wiring
• Separation of combustion pan from the tank
• Element and thermostat/ECO transfer to new tank
• Reassembly with new foam seals
• Recaulking flanges to coach skin
• Post-installation leak checks on gas AND water connections

⚠️ Critical Safety Warnings

• Shut off gas supply at the LP container before disconnecting the gas line — fire/explosion risk
• Water in tank must be cool before working on the water heater — scalding injury risk
• Power source must be disconnected before servicing — electrical shock/electrocution risk
• Label all wires before disconnecting during service — reconnection accuracy
• Test all gas fittings for leaks with leak detection solution before use — carbon monoxide/explosion risk
• DO NOT use matches, candles, or flames to check for gas leaks
• NEVER operate the water heater without water in the tank — element burnout risk

Wiring Reference (Electronic Models)

For reference when reconnecting the new tank:

• Orange wire — 12V positive for gas DSI ignition (+)
• White wire — 12V positive for 110V electric (+)
• Blue wire — non-ignition lamp
• Green wire — 12V negative (-)

Always reference the complete Dometic installation manual (MPD 91735) before starting.

Cross-Reference Part Numbers

• Part Number: 92099

⚠️ Professional Installation Strongly Recommended

Tank replacement involves LP gas line work, 120V AC electrical, 12V DC wiring, and water plumbing — all with safety-critical implications if done incorrectly. Installation should be performed by a qualified RV service technician.

Learn More

For more detail on RV water heater options and troubleshooting: RV Water Heater Replacement Guide.

Genuine Dometic OEM

Key Features

• Genuine Dometic OEM RV water heater tank replacement kit
• Part number: 92099
• 6-gallon tank
• Compatible with: Dometic WH-6GEA and WH-9GEA electronic water heaters
• Complete rebuild kit — tank, foam insulation, pressure relief valve, heating element, foam seals
• 3 mounting points are unthreaded — screws self-thread into softer aluminum
• Caulk and pipe compound NOT included (source separately)

Specifications

• Brand: Dometic
• Part Number: 92099
• Type: RV Water Heater Tank Replacement Kit
• Tank Capacity: 6 gallons
• Compatible Water Heater Models: WH-6GEA, WH-9GEA
• Included: Tank, foam wrap insulation, pressure relief valve, heating element, foam seals
• NOT Included: Caulk, pipe compound
• Mounting: 3 unthreaded mounting points (self-threading into aluminum)
• Installation: Requires full water heater removal and rebuild