Upgrade your fleet's electrical system with the Delco Remy 40SI 12V 300A Heavy Duty Alternator (OEM 8600299). Designed for commercial trucks, buses, and heavy-duty vehicles, this brushless alternator delivers reliable high-current output, ensuring your engines and auxiliary systems operate efficiently under the toughest conditions. Featuring a J180 Short Hinge mount and remote sense voltage regulation, it provides precise fitment and consistent performance, making it an ideal OEM replacement or fleet upgrade solution.
8600299
Elecdurauto
China
IATF 16949 / ISO 9001 / CE / RoHS
OEM label and ODM customization accepted
1 pcs
7–15 Days
50,000 pcs / month
18 months
| Quantity: | |
|---|---|
Product Description
This 40SI high-output alternator is engineered to meet the real-world demands of commercial and industrial buyers operating in high-load environments.
Wholesale distributors seeking a reliable source of 40SI 12V 300A alternators, with consistent supply and accurate inventory for heavy-duty truck and bus markets.
Fleet maintenance teams who require OE-level performance and high-current output to keep commercial trucks, buses, and service vehicles running efficiently, while controlling maintenance costs.
Heavy-duty machinery repair workshops servicing construction, mining, and bus fleets, needing brushless alternators with J180 Short Hinge mounting for fast, reliable replacements.
OEM project buyers planning custom mounting, voltage regulation, connectors, or private labeling, benefiting from the Delco Remy 40SI series engineering and long-term reliability.
Tender and government procurement programs that demand certified, fully documented alternators for compliance with commercial and industrial fleet requirements.
Designed as a direct-fit replacement for Delco Remy 40SI 12V 300A alternators, this unit perfectly matches J180 Short Hinge mounting, electrical interfaces, and performance characteristics, ensuring hassle-free installation with no modifications required. Ideal for fleet maintenance teams and OEM projects.
Delivers stable high-current output to support demanding electrical loads such as engine cooling fans, HVAC systems, lighting, telematics, battery charging systems, and auxiliary equipment in heavy-duty trucks, buses, and commercial vehicles.
Engineered with an efficient air-cooled design, the alternator maintains controlled operating temperatures during prolonged operation, high-load cycles, and frequent idling, ensuring long service life in commercial fleet environments.
Built with high-purity copper windings, an oversized rectifier assembly, sealed heavy-duty bearings, a reinforced aluminum housing, and a dynamically balanced rotor, this alternator provides durability, reduced vibration, and consistent output under the harshest operating conditions.
Each unit undergoes full functional testing, including full-load output verification, voltage regulation accuracy, vibration resistance, thermal stability, and overall electrical performance validation, guaranteeing reliable operation for fleet and OEM customers before shipment.
| Specification | Details |
|---|---|
| Model | WB2442 |
| Type | 40SI Heavy-Duty Alternator Replacement |
| Voltage | 12V |
| Output | 300A |
| Cooling System | Air-Cooled |
| Mounting | J180 Short Hinge |
| Regulator | Internal |
| Rotation | Clockwise (viewed from pulley side) |
| Output Terminal | B+ Stud |
| Ground Type | Negative Ground |
| Housing Material | High-strength aluminum alloy |
| Reference Numbers / OEMs | 8600299 / WB2442 / 8755 |
| Application Environment | Heavy-duty trucks, buses, diesel engines, commercial vehicles |
| Duty Cycle | Continuous-duty, high electrical load operation |
| Brand / Reference Type | Part Number / Series |
|---|---|
| Delco Remy OEM | 8600299 |
| Delco Remy OEM | 8600339 |
| Delco Remy OEM | 8600279 |
| Aftermarket Reference | 8755 |
| Aftermarket Reference | WB2442 |
| Aftermarket / Program Code | WB2442 |
| OEM / Equivalent Series | 40SI Air-Cooled Alternator Series |
Precision machining for water-cooled housings and end covers to ensure perfect fitment, stable structure, and OE-level heat dissipation.
High-precision balancing ensures smooth rotation, reduced vibration, and reliable performance under high-RPM duty cycles.
Semi-automatic stations with torque control & poka-yoke guarantee fastening accuracy and consistent assembly quality.
Every alternator is tested for output current, voltage regulation, rectifier integrity, and electrical safety before packaging.
Thermal cycling and full-load endurance tests validate heat resistance and long-term durability in heavy-duty applications.
Every 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.
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
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.
Certain alternator models and assemblies are exclusively developed by Elecdurauto and unavailable from other factories.
I ensure fast communication to support your purchasing schedule and project decisions.
I support OEM/ODM development, custom tooling, label customization, and new-model prototyping.
New SKUs are launched at highly competitive prices, and many existing models remain the lowest-cost option worldwide.
18-month warranty
Pre-shipment photos and videos
Serial number tracking
Replacement for QC-approved claims
Support for third-party inspection (SGS, TUV, BV)
This alternator is designed for heavy-duty trucks, buses, and commercial diesel vehicles. It directly replaces Delco Remy 40SI 12V 300A alternators and fits applications requiring J180 Short Hinge mounting. Commonly used in European, North American, and South American fleets.
Yes, it is cross-compatible with OEM numbers 8600299, 8600339, 8600279, as well as aftermarket references WB2442 and 8755, providing a reliable OEM-level replacement for fleet maintenance or OEM projects.
The alternator delivers 12V 300A high-current output and is rated for continuous-duty operation. It can support engine cooling fans, HVAC systems, lighting, telematics, and auxiliary equipment under heavy-load conditions without overheating.
J180 Short Hinge refers to a standard mounting bracket distance compatible with most Delco Remy 40SI applications. It ensures direct-fit installation with no modifications required, saving time for fleet workshops and OEM assembly lines.
Yes, it features an internal regulator with remote sense capability, allowing precise voltage control across the electrical system and improving battery charging efficiency for trucks, buses, and commercial vehicles.
Absolutely. The alternator is air-cooled with high-strength aluminum housing and sealed heavy-duty bearings, maintaining stable performance under high ambient temperatures common in mining, construction, and South American or Southern European regions.
Yes, OEM projects can request custom voltage settings, connectors, or private labeling. The alternator's standard 40SI architecture allows easy integration into fleet or vehicle-specific electrical systems.
Each unit undergoes 100% end-of-line testing, including full-load output verification, voltage regulation accuracy, vibration and thermal stress tests, ensuring consistent performance for fleet and commercial operations.
B2B clients can purchase Delco Remy 40SI 12V 300A alternators directly from authorized distributors or suppliers carrying WB2442 / 8600299 / 8755 references, ensuring OE-level quality and traceable supply chains for European, US, and South American markets.
Yes, this alternator comes with full documentation, certifications, and OEM equivalence data, suitable for tenders, government fleet programs, and compliance requirements in multiple regions, including Europe, the Americas, and APAC fleets.
