Pro Marine Yamaha Suzuki Mercury 122°F Thermostat F12411
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Aftermarket 50°C thermostat for F115, HPDI, DF100A-DF300 & 115 EFI outboards.
This component regulates cooling-water circulation to maintain proper engine operating temperature. When the engine is cold, it restricts water flow. As temperature reaches approximately 122°F/50°C, the thermostat opens to allow additional cooling circulation.
CROSS REFERENCES:
Yamaha 60V-12411-00-00, 68V-12411-00-00; Suzuki 17670-90J20, 17670-90J21; Sierra 18-3525; Mercury 8M0175320, 8M6010295, 8M6013864, 881429.
FITMENT:
Yamaha: F115/LF115 four-strokes (2000+); VZ200, VZ225, VZ250, VZ300 HPDI; Z250/Z300 HPDI; LZ250/LZ300 counter-rotation HPDI.
Suzuki: DF100A, DF115A, DF140A, DF150/AP, DF175/AP, DF200A/AP, DF250A/AP, DF300A/AP applications.
Mercury: 115HP EFI serial ranges 0T178500-0T800999; 0T801000-1B226999; 1B227000-1B366822.
Common failure signs: overheating, stuck closed/open, corrosion buildup, damaged spring/valve.
Price: $37.95 each
Stock: Out of Stock (ETA: 09/17/2026)
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