Description
Genuine Dometic Upper Discharge Tube for MasterFlush 7640 & 7600 Series Pedal-Operated Macerator Toilets
Replace a cracked, damaged, or leaking upper discharge tube on your Dometic MasterFlush 7640 or other 7600 series macerator toilet with this genuine OEM part. The 7640 was the first pedal-operated macerating toilet in the RV industry. Its discharge plumbing carries ground waste from the macerator pump to your holding tank, up to 40 feet away, and keeps tank odors out of the bathroom. When a discharge tube component fails, the fix is this part, not a new toilet.
The 7640 is discontinued, and many are still in service in motorhomes, diesel pushers, and fifth wheels. Genuine replacement parts are getting harder to find, so owners often search by part number.
Compatible With:
- Dometic MasterFlush 7640 (pedal-operated macerator toilet)
- Other Dometic MasterFlush 7600 series toilets
Key Features:
- Genuine Dometic OEM replacement part
- Upper section of the 7600 series discharge tube assembly
- Restores the sealed discharge path from the macerator pump to your holding tank
- Helps keep waste and odors out of the bathroom
- Pairs with the 7600 Lower Discharge Tube (part #385312081)
How to Confirm This Is the Right Part for You
This part is specific to the MasterFlush 7600 series (7640 and related models). It is not for the 7100/7200 series or the 8000-series macerator toilets, which use different discharge components. The model number is on the data plate on your toilet. If you’re unsure whether you need the upper tube, the lower tube (#385312081), or both, tell us where the leak or damage is and we’ll help you pick.
Frequently Asked Questions
What’s the difference between the upper and lower discharge tube?
The 7600 series discharge assembly uses separate upper and lower tube components. This listing is the upper tube (#385312082). The lower tube is #385312081. Check which section is damaged before ordering.
My 7640 is leaking near the base. Is this the part I need?
It could be, but 7640 leaks have several possible sources, including the macerator pump shaft seal, fresh water connections, and the discharge tube. Inspect the discharge connections first. If the upper tube is cracked or damaged, this is the fix.
Is the 7640 still supported by Dometic?
The 7640 is discontinued, but replacement parts like this are still available through Dometic’s distribution channel as special order items.
Will this fit my 7120, 7220, or 8100 series toilet?
No. This part is specific to the 7600 series. Other MasterFlush series use different discharge components.
Why is this a special order item?
Dometic supplies discontinued-model parts like this one directly on order instead of stocking them in regular retail inventory, so we order it for your purchase.
You May Also Need
- Dometic MasterFlush 7600 Lower Discharge Tube (part #385312081)
- Dometic MasterFlush 7640 Macerator Pump & Motor
- Dometic MasterFlush 7640 Flush Pedal Assembly
Special Order Item
Please note: This is a special order item.
- Lead times may vary based on Dometic manufacturing and availability. Contact us for current estimated timing.
- Special order items are non-cancelable and non-returnable once the order has been placed with the manufacturer, except in the case of a warranty issue or shipping damage.
- Orders containing both in-stock and special-order items may ship separately or be held until all items are available.
