130A Alternator with 7-Groove Pulley (Square Plug) FIT 2008-2012 Honda Accord, 2009-2014 Acura TSX 2.4L L4, 12V DC Replaces 31100-R40-A01 11390N (Non-V6 Models) - 1 Pack

Honda & Acura 2.4L K24Z Platform Compatibility Matrix: FIT 2008-2012 Honda Accord 2.4L L4 Sedan / Coupe FIT 2009-2014 Acura TSX 2.4L L4 / 2012-2015 Crosstour 2.4L (Note: Only fits 4-cylinder engines; Will not fit J35 V6 models) Physical Technical Parameters: - Amperage Output: 130A (Physical Full-Load Calibration) - Pulley Specification: 7-Groove Fixed Pulley - Electrical Interface: 4-Pin Square Housing Connector - Rotation Direction: Clockwise (CW) - OE Reference: 31100-R40-A01, 104210-5890, 11390N, CSF89 Mechanical Stability & Testing: Every K24Z Alternator undergoes 100% factory dimensional and electrical load testing. The hardware is treated for environmental exposure to ensure long-term salt spray endurance and maintain proper electrical system geometry without excessive mechanical play in the internal bearing assembly. Professional Maintenance Standards: To maintain proper electrical geometry, verify the serpentine belt condition and tensioner alignment before assembly. Use of high-torque impact tools on the terminal B+ nut is prohibited. Professional technician installation is required to verify charging circuit continuity and secure physical integration with the engine harness.

• Precise Fitment Protocol: FIT 2008-2012 Honda Accord 2.4L L4, FIT 2009-2014 Acura TSX 2.4L L4. Engine Platform: K24Z Series Inline-4. Position: Front Engine Accessory Drive. Non-Compatibility Notice: Engineered for 4-cylinder models only; will NOT fit 3.5L V6 engines with different mounting lug geometry.
• Standardized Electrical Interface: This 130A alternator features a 4-pin square electrical connector and a pre-installed 7-groove serpentine belt pulley. The internal voltage regulator is calibrated for 12V DC output, ensuring a consistent physical interface with the K24Z factory electrical harness and belt tensioner travel.
• High-Load Integrity Testing: Constructed with 100% new internal components, including heavy-duty double-sealed ball bearings for environmental exposure endurance. Every unit undergoes 100% full-load bench testing to verify physical amperage output and voltage ripple control, maintaining electrical stability across the specified engine RPM range.
• Restoration of System Geometry: Engineered to address internal signal resistance and resolve electromagnetic instability within the charging circuit. This unit restores factory handling characteristics of the vehicle's electrical load, maintaining proper system geometry to ensure consistent power supply and prevent physical load variations during high-demand operation.
• Technical Installation Limits: Professional installation is required. The vehicle battery must be physically disconnected and verified as fully charged before seating the new alternator. Note: The unit is designed for clockwise (CW) rotation; verify the mounting lug configuration matches OE reference 31100-R40-A01 for physical bolt-on alignment.