OEM replacement 12V electric flush pump for Thetford Cassette C2 Electric, C402C, and C403L permanent toilets. Restores flush function when the original pump fails. Direct fit — connects to existing tubing and wiring without modification. Previously known as Thetford part number 29027.
The Thetford 49989 is the OEM replacement electric flush pump for the Thetford Cassette C2 Electric, C402C, and C403L permanent cassette toilet models. Previously known as Thetford part number 29027, this pump is the same direct-fit replacement under an updated part number.
The pump moves fresh water from the flush water tank into the toilet bowl when the flush switch is activated. When the pump fails — typically presenting as no water flow when flushing despite adequate water in the tank — this replacement unit restores full flush function. It connects directly to the original tubing and wiring with no modification required, and comes pre-wired with butt connectors and heat shrink for straightforward installation.
• 1x Thetford 49989 replacement electric flush pump • Pre-attached butt connectors • Heat shrink tubing Related Thetford cassette toilet parts: • Blade seals, flush water caps, and service kits available separately by model
Symptoms of a failed flush pump: • No water flows into the bowl when the flush button is pressed • Flush switch activates (click heard) but no water delivery • Flush water tank is confirmed to have water Before replacing the pump, confirm the flush water tank has water and the intake tube is not kinked or blocked. If water is present and the tube is clear, a failed pump is the likely cause.
This pump fits the Cassette C2 Electric, C402C, and C403L only. Thetford cassette toilets across the C2, C200, C400 series use different pump configurations. Confirm your exact model number (found on the toilet body or service door label) before ordering to ensure compatibility.