By Pentair Pool Products
Part # 6291-009
Manufacturer Code 42001-0107S
Dimensions 2.75" L x 3.25" W x 2.25" D
Pentair® OEM Transformer Kit – 115/230 Volt
Part No.: 42001-0107S
Genuine Pentair® OEM transformer kit for select Pentair® and Sta-Rite® pool and spa heaters. Converts incoming 115V or 230V line voltage to the correct low voltage needed for safe and reliable heater operation.
Why this kit?
✅ Restores power to control boards in heaters with a failed transformer
✅ Dual-voltage design – compatible with both 115V and 230V systems
✅ Pentair® OEM quality – ensures proper fit, performance, and safety
✅ Complete kit – includes mounting hardware for a clean installation
Compatibility
✅ Fits select Pentair® and Sta-Rite® pool/spa heaters, including:
MasterTemp® series
Max-E-Therm® series
Other models using transformer 42001-0107S
➜ Works with systems that require a dual-voltage transformer (115V/230V input)
⚠️ Always confirm your heater’s model, voltage, and part number before ordering.
What’s included
(1) ✅ Pentair® OEM transformer – 115/230 Volt
(1) ✅ Mounting hardware set
Install notes
➜ Turn off all power to heater before servicing
➜ Match wiring to heater schematic — follow Pentair® installation guide
➜ Mount securely and route wires to avoid abrasion or heat damage
⚠️ Installation by a qualified technician is strongly recommended — incorrect wiring may damage equipment or cause injury.
Disclaimer
⚠️ Compatibility is based on Pentair® documentation. Always verify your heater’s model and electrical specs before purchase. This part is non-returnable once installed.