Bosch 7738007315 Anode (D:14, L:131, M4)
A Bosch replacement anode used in select Bosch point-of-use electric mini-tank water heaters to provide sacrificial corrosion protection inside the tank.
Key Features:
- Replacement anode identified as "Anode D:14 L:131 M4"
- Part number: 7738007315
- Listed as replacing: 574305 and 87387044470
- Related service part shown as commonly paired: Water Heater Gasket (87387044500)
Compatibility & Applications:
- Sold under Bosch tankless/mini-tank replacement parts (category placement on the listing), but the sources do not provide an official model-by-model fit list for this anode.
- Customer reviews repeatedly reference using it on a Bosch point-of-use mini-tank water heater.
- Must only be used where the manufacturer specifies this exact part number: 7738007315.
Installation & Operation Notes:
- The provided sources do not include step-by-step installation instructions.
- Installation should be performed by a qualified service person and should follow the water heater's service/installation documentation for the exact model.
- Review-based note: one customer mentions replacing the anode and gasket together as routine service.
Maintenance & Troubleshooting:
- Review-reported maintenance patterns vary by water conditions:
- Some users report the anode can be "pretty much gone" in about a year, and one user reports replacing about every 8 months.
- Another user notes breakdown can vary by water quality, and describes the anode dissolving quickly and leaving thick "sand-like" deposits.
- Review-reported related service observations include mineral buildup on the heating element/coil during inspection/maintenance.
- Common "replace it" symptom is simply scheduled preventative maintenance (anode consumed), rather than a single performance failure noted in the sources.
User Reviews & Q&A Summary:
- Reviews commonly describe it as the exact/OEM fit and "installation is a snap" .
- Many reviewers treat it as a routine maintenance item for small Bosch point-of-use heaters, with replacement frequency ranging from under a year to multiple years depending on conditions .
- A notable negative theme is rapid or "chunky" breakdown in some installations, with deposits accumulating in the heater.