Elecdurauto WB2450 / 55SI-Type 24V 275A Water-Cooled Alternator

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

• Wholesale distributors requiring consistent supply and predictable inventory

• Fleet maintenance teams who demand OE-level reliability at competitive cost

• Heavy-duty machinery repair workshops managing mining, bus, and construction equipment

• OEM project buyers needing custom mounting, connectors, voltage settings, or private labeling

• Tender and government procurement programs requiring certifications and documentation

Key Advantages of 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 WB2450 / 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 WB2443 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 – 55SI Water-Cooled Heavy-Duty Alternator (WB2450 / Delco Remy Replacement) 

1. Is the Elecdurauto WB2450 a genuine Delco Remy 55SI alternator？

No, this is an OE-level replacement alternator engineered to match Delco Remy 55SI specifications. It offers direct-fit installation, identical electrical output, and durability equivalent to the original 55SI series, while being more cost-effective for fleets, distributors, and OEM buyers worldwide.

2. What vehicles and engines are compatible with this 55SI alternator？

The WB2450 / 55SI-type water-cooled alternator is compatible with a wide range of heavy-duty trucks, buses, construction machinery, industrial diesel engines, and marine auxiliary engines. It is ideal for vehicles requiring high-output 24V / 275A charging systems and works with J180 hinge mounting configurations.

3. Can this alternator be used in Europe, South America, Africa, or the Middle East?

Yes. Elecdurauto WB2450 is supplied to distributors and fleet operators in Europe, South America, Africa, and the Middle East. It meets international standards (IATF16949, ISO9001, CE, RoHS) and is suitable for heavy-duty equipment used in diverse climate and operational conditions.

4. Can the alternator's connectors, pulleys, or voltage settings be customized?

Absolutely. For OEM projects or bulk buyers, we offer:

• Connector type adjustments

• Pulley configuration (6- or 7-groove options)

• Custom voltage regulator settings

• Private-label or branded alternator options
  This is especially useful for fleet operators, distributors, or machinery manufacturers requiring specific adaptations.

5. What is the lead time and MOQ for orders?

• Sample / small orders: 7–15 days

• Bulk orders (20–300 units or more): 20–30 days depending on quantity and customization

• MOQ: 1 unit for samples, larger MOQ negotiable for OEM projects or distributors.

6. How can I confirm fitment before ordering?

Simply provide the OEM part numbers, vehicle model, or engine details. Our engineering team will verify compatibility with Delco Remy 55SI reference numbers 8600564, 61002316, 240-4240 and ensure a direct-fit solution.

7. What testing and warranty does Elecdurauto provide?

Every WB2450 alternator undergoes 100% end-of-line testing, including:

• Rated current output and voltage regulation

• Thermal stability and water-cooling performance

• Rotor balance and vibration resistance

• Load and endurance testing

We provide an 18-month warranty, pre-shipment photos/videos, and full replacement support for QC-approved claims. Third-party inspection (SGS, TUV, BV) is supported for international buyers.

8. Why choose Elecdurauto WB2450 over ordering genuine Delco Remy 55SI?

Real buyers report:

• Lower cost per unit without compromising reliability

• Faster availability compared to OEM Delco lead times

• Customizable options for fleet, distributor, and OEM requirements

• Stable long-term supply, especially useful for global operations in Europe, South America, Africa, and the Middle East

9. Can Elecdurauto support fleet or distributor orders for multiple locations?

Yes. We have experience supplying large fleets and distributors with consistent quality and packaging options, including:

• Bulk pallet shipping

• Private labeling for different regions

• Multiple shipping locations across Europe, Africa, Middle East, and South America

10. Are datasheets, certificates, and technical drawings available?

Yes. Buyers can request:

• Technical datasheets (dimensions, mounting diagrams)

• Cross-reference catalog with Delco Remy 55SI equivalents

• Certificates (IATF16949, ISO9001, CE, RoHS)

• Installation instructions and wiring diagrams

These documents help OEMs, distributors, and fleet operators verify compliance and simplify procurement.