SFA Saniflo Sanimarin 4
#17 in Electric marineFull review
A comfortable standard-height macerating head that publishes both its flush volumes. Suits owners who care about water and noise.
Amazon $896.75$896.75
The SFA Saniflo Sanimarin 4 and the Dometic MasterFlush MF 8120 are evenly matched, rated 2.5 and 2.5. The SFA Saniflo Sanimarin 4 leads on features and value. The SFA Saniflo Sanimarin 4 costs $768.03 less ($896.75 vs $1,664.78).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Dometic MasterFlush MF 8120
#19 in Electric marineFull review
Dometic’s macerator head for yachts and high-end RVs; the listing offers few numbers.
Amazon $1,664.78$1,664.78
Which should you buy?
- Choose the SFA Saniflo Sanimarin 4 for features (soft-close seat, water-saver flush, household-size bowl vs ceramic or porcelain bowl, water-saver flush) and value ($896.75, against other toilets in its group vs $1,664.78, against other toilets in its group).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every electric marine boat or RV toilet; a clear win is highlighted. How we rank explains each one.
| Factor weight | SFA Saniflo Sanimarin 4 | Dometic MasterFlush MF 8120 |
|---|---|---|
| Overall rating | 2.5/5 | 2.5/5 |
| Value 25% | 9 $896.75, against other toilets in its group | 0 $1,664.78, against other toilets in its group |
| Flush water 20% | 29 0.6 gal (2.4 L) per flush | 50 flush volume not published (neutral score used) |
| Power draw 15% | 50 amp draw not published (neutral score used) | 50 amp draw not published (neutral score used) |
| Features 25% | 55 soft-close seat, water-saver flush, household-size bowl | 40 ceramic or porcelain bowl, water-saver flush |
| Warranty 15% | 0 warranty not published, scored as none | 0 warranty not published, scored as none |
Specifications
| SFA Saniflo Sanimarin 4 | Dometic MasterFlush MF 8120 | |
|---|---|---|
| Flushing | ||
| Type | Electric | Electric |
| Water per flush | 0.6 gal | - |
| Water-saver flush | Yes | Yes |
| Macerator | Yes | Yes |
| Control | Control panel | Flush panel |
| Power | ||
| Voltage | 12 V | 12 V |
| Bowl and fit | ||
| Bowl size | Standard height | Low profile |
| Bowl material | - | Ceramic |
| Household size | Yes | - |
| Soft-close seat | Yes | - |
| Build | ||
| Weight | - | 30 lb |