Caterpillar 330B 336D Excavator Engine C7 C9 Alternator 24V 95A 9PK 272-1889 3524032

Product Details

Product Overview

This high-output alternator is a direct replacement for Caterpillar C7 and C9 diesel engines commonly found in the 330B and 336D excavator series. Engineered for heavy-duty industrial applications, this 24V 95A unit ensures reliable electrical system performance under extreme loads. We ship globally to North America, Europe, the Middle East, and Asia-Pacific, supplying top-tier aftermarket parts for mining, construction, and earthmoving fleets.

Key Features & Benefits

• Heavy-Duty Output: 24V 95A rating ensures stable power for high-demand electrical systems, including ECU modules and lighting.
• Precision Fitment: 9PK serpentine belt pulley design matches OEM specifications for easy installation without modifications.
• Durable Construction: Built with high-temperature resistant windings and sealed bearings for extended service life in dusty, high-vibration environments.
• Direct OEM Replacement: Matches the form, fit, and function of the original 272-1889 and 3524032 units.
• Rigorous Testing: 100% bench-tested for voltage regulation, load capacity, and thermal stability before shipment.

Technical Specifications

OEM Cross-Reference

This alternator directly replaces the following OEM and aftermarket part numbers:

• Caterpillar OEM: 272-1889, 352-4032, 10R-3448
• Cross References: 24V-95A-9PK, ALT-C7-C9, 2721889, 3524032

Compatibility

• Engine Models: Caterpillar C7 ACERT, C9 ACERT
• Excavator Models: Caterpillar 330B, 330B L, 336D, 336D L, 336D2
• Other Applications: Fits specific models of CAT D6T, D7E, and 730C articulated trucks using the same C7/C9 platform
• Year Range: 2000-2015 (verify pulley alignment for pre-2005 models)

Global Supply & Distribution

We maintain extensive inventory in multiple global hubs to ensure fast delivery. Our logistics network covers:

• North America: 3-5 business days to major ports (Los Angeles, Houston, New York)
• Europe: 5-7 business days to Rotterdam, Hamburg, and Antwerp
• Asia-Pacific: 3-5 business days to Singapore, Shanghai, and Dubai
• Middle East & Africa: 7-10 business days to Jebel Ali, Dammam, and Durban

We offer flexible shipping options including air freight, sea freight, and express courier (DHL, FedEx). All shipments comply with international trade regulations.

Quality Assurance

• Certifications: ISO 9001:2015 manufacturing facility
• Warranty: 12-month limited warranty against manufacturing defects
• Testing: Each unit undergoes a 30-minute load bank test at 95A and 24V
• Materials: High-grade copper windings, aluminum housing, and sealed NSK bearings

FAQ

Q: Is this a direct bolt-on replacement for my CAT 336D with a C9 engine?
A: Yes, this alternator is designed as a direct replacement. It uses the J180 twin tab mounting system and 9PK pulley. However, we recommend verifying the pulley alignment and connector type against your original unit (272-1889 or 3524032). If your machine has a different pulley (e.g., 6PK), you will need to swap the pulley from your old alternator.

Q: What is the recommended installation procedure?
A: Disconnect the battery negative terminal first. Remove the belt tension, then unbolt the old alternator. Transfer the pulley if needed. Install the new unit, torque mounting bolts to 35-40 ft-lbs, reconnect wiring (B+ to battery, D+ to exciter), and tension the belt to CAT spec (90-110 lbs deflection). Reconnect battery and test voltage at idle (should read 27.5-28.5V).

Q: Can this alternator be used on a marine or generator application?
A: This unit is specifically designed for off-highway and construction equipment. It is not marine-certified (lacks spark arrestor). For generator applications, verify the rotational direction and mounting bracket compatibility—some generator sets use a different flange pattern.