OE 61006081 | 55SI New 24V 275A Heavy-Duty Alternator – OE Replacement for Delco Remy

Designed for Heavy-Duty Fleets, Distributors, and OEM Buyers

• OE-Level Replacement: Direct-fit compatibility with Delco Remy 55SI, ensuring identical mounting and matched electrical characteristics for hassle-free installation.

• High Output 24V / 275A: Supports HVAC, electric fans, hydraulic systems, lighting, telematics, and auxiliary tools, delivering reliable power under heavy-duty conditions.

• Advanced Water-Cooled System: Maintains optimal operating temperature during high load or long idle periods, improving efficiency and extending alternator life.

• Durable Components: Features heat-resistant copper windings, oversized rectifier, sealed bearings, high-strength aluminum housing, and dynamically balanced rotor for maximum reliability.

• 100% End-of-Line Tested: Each unit undergoes full-load output, voltage regulation, vibration resistance, thermal stability, and cooling performance tests to guarantee consistent quality.

Key Advantages of OE 61006081 / 55SI-Type Water-Cooled Alternator

• OE-Level Replacement: Direct-fit compatibility with Delco Remy 55SI, identical mounting, and matched electrical characteristics

• High Output 24V / 275A: Supports HVAC, electric fans, hydraulic systems, lighting, telematics, and auxiliary tools

• Advanced Water-Cooled System: Keeps operating temperature low under high load or long idle periods, increasing durability

• Durable Components: Heat-resistant copper windings, oversized rectifier, sealed bearings, high-strength aluminum housing, dynamically balanced rotor

• 100% End-of-Line Tested: Full-load output, voltage regulation, vibration resistance, thermal stability, and cooling performance verified

Technical Specifications of the Delco 55SI Replacement Alternator

Cross-Reference Compatibility for Delco Remy 55SI Applications

Applications of Equipment Using 55SI-Type Alternators 

Heavy-duty trucks

Construction machinery

Agricultural tractors and harvesters

Buses and transport vehicles

Mining and off-road machinery

Power generation auxiliary systems

Elecdurauto OE-Level Manufacturing for Heavy-Duty Water-Cooled Alternators

CNC Machining Center

Precision machining for water-cooled housings and end covers to ensure perfect fitment, stable structure, and OE-level heat dissipation.

Automatic Stator Winding Machine

Automated winding and inserting systems deliver consistent copper density, insulation stability, and long-life electrical performance.

Rotor Dynamic Balancing Machine

High-precision balancing ensures smooth rotation, reduced vibration, and reliable performance under high-RPM duty cycles.

Torque-Controlled Assembly Line

Semi-automatic stations with torque control & poka-yoke guarantee fastening accuracy and consistent assembly quality.

Alternator Performance Test Bench (100% Final Test)

Every alternator is tested for output current, voltage regulation, rectifier integrity, and electrical safety before packaging.

High-Temperature & Endurance Test Chamber

Thermal cycling and full-load endurance tests validate heat resistance and long-term durability in heavy-duty applications.

Quality Assurance & Testing (OE-Grade Replacement Standards)

Every water-cooled alternator undergoes:

• 100% output performance test

• Voltage regulation test

• High-temperature resistance test

• Vibration and durability test

• Rotor/stator electrical integrity testing

• Noise & bearing inspection

• Full load endurance test

All tests follow IATF 16949 quality-management requirements.

Why Distributors and OEM Buyers Choose Elecdurauto as Their Alternator Partner

This model is one of the most widely used heavy-duty alternators in commercial fleets. Mechanics and distributors choose this Elecdurauto replacement because:

• It is easier to source and more cost-effective than OEM units

• Output performance meets or exceeds OE charging specifications

• Installation is plug-and-play with matching connectors and mount

• It withstands long idling hours, high temperatures, and vibration

• Lower total cost of ownership for fleets and service centers

OEM Project Case from Elecdurauto Water-Cooled Alternator Supplier for Global Heavy-Duty Brands

At Elecdurauto, I deliver more than just heavy-duty alternators—I provide full-cycle engineering and supply solutions built around each OEM customer's exact platform requirements. As a trusted global supplier specializing in water-cooled alternators for buses, construction machinery, mining vehicles, and high-load commercial platforms, I work closely with manufacturers to ensure every unit aligns with their electrical, thermal, and durability standards.

Water-Cooled Alternator Assembly

Stator Coil Precision Winding

Finished Heavy-Duty Alternator

OEM Packaging & Inventory

Bulk Export-Ready Stock

Rotor & Fan Subassembly

High-Output Alternator Housing

Cooling-Enhanced Rear Cover

Elecdurauto Core Advantages for Replacement Alternators

1. Exclusive Products – Unique in Global Markets

Certain alternator models and assemblies are exclusively developed by Elecdurauto and unavailable from other factories.

2. Fast Response – Inquiries Answered Within 24 Hours

I ensure fast communication to support your purchasing schedule and project decisions.

3. Custom Tooling – Rapid New Product Development

I support OEM/ODM development, custom tooling, label customization, and new-model prototyping.

4. Pricing Advantage – Lowest Global Pricing for Many SKUs

New SKUs are launched at highly competitive prices, and many existing models remain the lowest-cost option worldwide.

Buyer Protection, Warranty, and Global Supply Support

• 18-month warranty

• Pre-shipment photos and videos

• Serial number tracking

• Replacement for QC-approved claims

• Support for third-party inspection (SGS, TUV, BV)

FAQ – OE 61006081 / 55SI New 24V 275A water-cloud Alternator 

1. What vehicles and equipment is the WB2454 7382 alternator compatible with？

The WB2454 7382 is a direct OE replacement for Delco Remy 55SI water-cooled alternators. It fits heavy-duty trucks, buses, industrial engines, and construction machinery. Customers in the US, Europe, South America, and Africa frequently use it for fleet maintenance, OEM projects, and aftermarket replacements.

2. Is this alternator a genuine Delco Remy product？

No, it is an OE-level replacement designed to match the original Delco Remy 55SI specifications, including 24V 275A output, water-cooled design, and J180 / Long Pad mounting. It offers reliable direct-fit performance while providing a cost-effective alternative for distributors and fleet operators.

3. What are the key technical specifications?

• Voltage: 24V

• Output Current: 275A

• Mounting: Long Pad (105mm) / J180 Hinge

• Cooling: Water-cooled

• Rotation: Clockwise (from pulley side)

• Regulator: Internal

• Housing: High-strength aluminum alloy

This alternator is tested for continuous performance under high heat, vibration, and long operating hours, making it suitable for heavy-duty environments worldwide.

4. Can I use this alternator as a direct replacement for OE numbers 8600564, 61006081, 8600580, 8600557, or 240-4169?

Yes. The WB2454 7382 is fully compatible with these Delco Remy OE numbers, ensuring direct-fit installation without modifications. This is especially useful for fleet operators and distributors who need quick replacement solutions.

5. How durable is this alternator in heavy-duty conditions?

It features heat-resistant copper windings, oversized rectifier, sealed bearings, and dynamically balanced rotor, along with a high-strength aluminum housing. The water-cooled system helps maintain optimal temperatures during long idle periods or high-load operation, ensuring extended service life even in extreme conditions across Europe, North America, South America, and Africa.

6. Is this alternator tested before shipping?

Yes, every unit undergoes 100% end-of-line testing, including full-load output, voltage regulation, vibration resistance, thermal stability, and cooling performance checks. This guarantees reliable performance and reduced downtime for your fleet or industrial equipment.

7. What is the typical delivery time and shipping options?

• Small quantities / samples: 7–15 days

• Bulk / OEM orders: 20–30 days depending on quantity and customization
  We ship worldwide, including North America, Europe, Africa, South America, and Asia, via reliable couriers and freight services.

8. Can I customize the alternator for my OEM project?

Yes. Elecdurauto supports OEM/ODM customization, including connector types, pulley configuration, labeling, and voltage regulator settings, to meet specific requirements for fleet operators, bus manufacturers, and industrial OEMs globally.

9. What warranty does this product come with?

The WB2454 7382 comes with an 18-month warranty covering manufacturing defects. For distributors and fleet operators, this ensures peace of mind and reliable after-sales support.

10. How can I verify compatibility before purchase?

You can compare your existing alternator's OE number, voltage, output current, mounting type, and cooling method. For any questions, our sales engineers are available to confirm fitment for specific truck models, buses, industrial engines, or construction machinery, worldwide.