132-2156 1322156 Caterpillar Alternator Fits D5N D6N D6R

132-2156 Caterpillar Alternator GP-Charging OEM 1322156 Fits D5N D6N D6R Parts Product Information Brand: Caterpillar Category: Alternators & Starters Part Number: 132-2156 Part Name: Alternator GP-Charging (24V 70A) Alternative OEM: 1322156 / CA1322156 / 107-7977 / 0R8279 Engine Model: Caterpillar 3116, 3126B, 3306, C-10, C-12, 3196 Compatible Equipment: Caterpillar D5M, D5N, D6M, D6N, D6R, D7R Dozers; 330B L, 345B L, 365B Excavators; 953C, 963C, 973C Track Loaders Condition: 100% New Aftermarket Replacement 132-2156 1322156 Caterpillar Alternator Fits D5N D6N D6R (1) 132-2156 Alternator NIKKO ALTERNATOR 0-35000-0390 0-35000-0391 0-35000-0392 0-35000-0460 0-35000-0461 0-35000-0471 0-35000-0480 Product Function & Specs: Heavy-duty 24-Volt, 70-Amp charging alternator designed to deliver stable electrical system power under severe vibration and dust. Features high-temperature internal windings and durable sealed bearings. Maintains the battery charge and powers control monitors, solenoid valves, and cabin lights during long shifts. Failure Symptoms: Battery loses charge quickly or the machine struggles to crank at startup. Flickering, dimming cabin displays or weak external work lights. Battery warning light remains illuminated on the dashboard while the engine is running. Loud bearing whine or squealing noise from the front of the engine block. Quick Installation Notes: Always disconnect the battery master isolator switch before installing to prevent electrical shorts. Check the condition of the drive belt and automatic tensioner pulley; replace if worn. Mount the alternator body securely onto the brackets, ensuring correct alignment with other pulleys. Clean any dirt or oxidation from the wire harness terminal eyes to secure low-resistance connections. FAQ: Q: Can this part replace OEM 132-2156? A: Yes, 100% interchangeable. Bolt hole positions, terminal connections, and the 24V 70A output match Cat factory specifications. Q: Is this an OEM or aftermarket replacement? A: This is a premium aftermarket replacement alternator built with high-fatigue copper windings and heavy-duty regulators. OEM durability without the dealer markup. Q: Which machines are compatible? A: Fits a broad range of Cat equipment, including D5N, D6N, D6R dozers, 330B L, 345B L excavators, and 953C/963C loaders. Send us your engine or machine serial number to double-check before ordering. Q: Does this unit include the pulley? A: Yes, it comes complete with the drive pulley pre-assembled for a fast and clean installation. Q: Do you support bulk orders? A: Yes. We offer competitive wholesale pricing for parts distributors, rebuild facilities, and heavy machinery workshops. Contact us directly for bulk rates. Why Sourcing From WinsParts? We match your part numbers directly against official parts catalogs to ensure a 100% correct fit. Our large physical inventory allows us to ship orders fast, minimizing your machine downtime with dependable parts.