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12V Voltage Regulator 129150-77710 for Yanmar 3TNE74 3TN66E 3TNA72E Engine
$39.99
Sale price
$39.99
Regular price
Available to Order
This 12-volt voltage regulator is an aftermarket replacement for select Yanmar compact diesel engines using part number 129150-77710.
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Product Overview
The voltage regulator controls charging-system output so the battery receives a steady, usable voltage. A failed regulator may cause overcharging, low charging voltage, a warning light, or repeated battery problems.
This unit replaces #129150-77710. Confirm the 12-volt system, connector shape, wire count, and mounting holes before purchase.
Key Features & Performance
- Helps stabilize alternator charging output
- Protects the battery from improper charging voltage
- Compact direct-mount replacement
- Suitable for compatible Yanmar engine electrical systems
Fitment & Compatibility
Compatible with select Yanmar 3TNE74, 3TN66E, and 3TNA72E engine applications. Equipment wiring and alternator type may vary.
Technical Specifications
- Product Type: Voltage Regulator
- Voltage: 12V
- Compatible Brand: Yanmar
- Part Number: 129150-77710
Frequently Asked Questions
Q: How can I test whether the regulator is faulty? A: Measure charging voltage and inspect the battery, alternator, grounds, and wiring first, because those faults can produce similar symptoms.
Q: Is this an original OEM part? A: This is an aftermarket replacement; brand names and part numbers are used only to identify compatibility.
Compatibility may vary by serial number, production date, or equipment configuration. Verify fitment before purchase.