DENSO C2Z31669 OEM 180A Alternator

The DENSO C2Z31669 is an OEM-grade 180-amp, 12-volt alternator engineered to deliver reliable charging system performance. As the world's largest alternator manufacturer, DENSO supplies this unit as original equipment, bringing factory-level quality directly to the replacement market.

This alternator is belt-driven from the engine crankshaft pulley and is responsible for recharging the battery after starting and maintaining proper system voltage during operation. It features an internal voltage regulator and internal fan design for compact, efficient packaging.

Key Features:

• 180-Amp Output — High-output rating designed to meet the demanding electrical loads of modern vehicles
• 12-Volt System — Direct-replacement for OEM charging system compatibility
• Internal Voltage Regulator — Integrated regulator maintains stable system voltage across all operating conditions
• OEM Engineering — Manufactured to DENSO's First Time Fit® standards for proper mounting with no belt or pulley alignment issues
• Rigorous Quality Testing — Stators and rectifiers tested to 300 volts; rotors submitted to 600 volts for verified performance
• Precision Slip Rings — Rotor slip rings buffed to an 8-micron surface finish with runout limited to 20 microns, minimizing brush wear
• OE-Grade Bearings — Validated to OEM standards and loaded with premium OE-specification lubricants for long service life

OEM & Cross-Reference Part Numbers:

• DENSO: C2Z31669
• OEM Equivalent: C2Z19766
• Ford/Jaguar: CX23-10300-AB, CX23-10300-AC, CX23-10300-AD
• DENSO Aftermarket: DAN1203

This alternator meets or exceeds all original manufacturer specifications, providing a dependable, like-for-like replacement that installs correctly the first time.