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ATG12029 Alternator 600-821-6110 600-821-6120 600-821-6140 600-821-6150 600-825-6120 RKD25A04 for Komatsu BR300J-1 BR310JG-1 CD60R-1

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ITEMNO： ATG12029

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PRODUCT DETAILS

ATG12029 Alternator 600-821-6110 600-821-6120 600-821-6140 600-821-6150 600-825-6120 RKD25A04 for Komatsu BR300J-1 BR310JG-1 CD60R-1

Part Numbers

Arrowhead: NK0-33000-5860

Atlantic Quality Parts: 3400-0503

J&N Electrical Products: 400-50000, 400-50003, 400-50004, 400-50010

Komatsu: 600-821-6110, 600-821-6120, 600-821-6140, 600-821-6150, 600-825-6120, RKD25A04

Lester: 12250, 12251, 12260

Nikko: 01-33-2000, 0-33000-2870, 0-33000-3071, 0-33000-4750, 0-33000-5280, 0-33000-5840, 0-33000-5850, 0-33000-5860, 0-33000-5870, 0-33000-5880, 0-33000-6511

Product Description

Description: Alternator
Voltage: 24V
Amperage: 25A
Unit Type: Aftermarket Replacement
Fan Location: External
Regulator Location: Internal
Polarity: Negative
Terminal: B+ with M5x0.8 terminal size
Excitation: 1-Wire Self-Exciting
Terminal R: Terminal marked "R" is for Lamp/Trio
Mount Hole 1: M12x1.75 threaded
Mount Hole 2: Unthreaded
Mount Hole 3: 14mm unthreaded
Weight: 5.3KG

This 24V 25A alternator is designed as a direct replacement for selected Komatsu construction and industrial equipment. It features an external fan, internal regulator, negative polarity, and 1-wire self-exciting design for reliable charging performance in demanding working environments.

Specifications

Item	Specification
Condition	Aftermarket Part
Description	Alternator
Voltage	24V
Amperage	25A
Fan Location	External
Regulator Location	Internal
Polarity	Negative
Excitation	1-Wire Self-Exciting
Terminal	B+
Terminal Size	M5x0.8
Terminal R	Lamp/Trio
Mount Hole 1	M12x1.75 Threaded
Mount Hole 2	Unthreaded
Mount Hole 3	14mm Unthreaded
Weight	5.3KG

Compatibility

Komatsu 510: 4D10 Engine, 1978–1985

Komatsu 510: 4D105 Engine, 1978–1985

Komatsu 515: 6D10 Engine, 1981–1985

Komatsu 515: 6D105 Engine, 1981–1985

Komatsu 530: 6D10 Engine, 1981–1985

Komatsu 530: 6D105 Engine, 1981–1985

Komatsu 540: 6D10 Engine, 1981–1985

Komatsu 540: 6D105 Engine, 1981–1985

Also fits Komatsu BR300J-1, BR310JG-1 and CD60R-1 applications.

Key Features

Feature	Details
Reliable Charging	24V 25A output for stable electrical system performance
Self-Exciting Design	1-wire self-exciting configuration
Cooling	External fan design
Regulation	Internal regulator
Durable Construction	Designed for demanding construction and industrial applications
Direct Replacement	Replaces multiple Komatsu, Nikko, Lester, Arrowhead and J&N references
Application	Komatsu construction and industrial equipment

Keywords

Komatsu Alternator
24V 25A Alternator
600-821-6110 Alternator

PRODUCT HIGHLIGHTS
SHIPPING

Item Details

Processing Time Orders are processed within 1-3 business days after payment confirmation

Shipping Methods DHL/UPS/ FedEx/ TNT/ Air Freight/ Sea Freight

Estimated Delivery Time Express shipping: 3-7 business days, depending on destination

Packaging Export-standard cartons with protective inner packing

Tracking Tracking number will be provided once the order is shipped

Shipping Cost Calculated based on weight, dimensions, and destination

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WARRANTY POLICY

All new aftermarket parts come with a 1-Year warranty. Quality is the first thing we consider. Check out our Warranty Assistance for more details.

SHIPPING POLICY

We offer express and standard shipping options to ensure your off-road machine gets back in action—fast and reliably. For more details, please visit our Shipping Policy .

EASY RETURN POLICY

We prioritize your satisfaction. If your order doesn't meet your expectations within 90 days, you may be eligible for a refund. See our Easy Return Policy for details.

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