CUMMINS ENGINE
This genuine alternator with multi‑OE numbers C4937404, C4932319, C3979372, C3979568, C4933436, C4316773 is high‑quality DCEC and Cummins engine spare parts, acting as the core charging component for Cummins heavy‑duty engines. It converts mechanical energy into electricity to power vehicle electronics and charge onboard batteries during engine operation. Built with high‑purity copper winding and high‑strength aluminum housing, this Cummins spare part delivers outstanding heat dissipation, vibration resistance and extended service life under harsh working conditions. Manufactured to DCEC OEM specifications, it matches original mounting dimensions and electrical parameters perfectly, ensuring steady charging output and preventing power‑supply failures for Cummins‑engine fleets.
Product Attributes
| Attribute Name | Value |
| Product Name | Alternator |
| OE Number | C4937404, C4932319, C3979372, C3979568, C4933436, C4316773 |
| Application | Cummins Engine, Heavy Duty Truck |
| Brand | DCEC Genuine |
| Main Material | Aluminum Housing, Pure Copper Coil, Plastic End Cover |
| Color | Silver & Black |
| Mounting Method | Direct bolt on installation, no modification needed |
| Function | Vehicle power generation & battery charging |
| Condition | Brand New |
PRODUCT DESCRIPTION
High‑Output OEM DCEC Engine Alternator
This multi‑OE alternator is professional Cummins engine spare parts built for Cummins heavy‑duty engines. High‑purity copper‑coil winding guarantees stable charging output. Light‑weight aluminum‑alloy housing optimizes heat dissipation and avoids overheating damage. Precision multi‑groove pulley perfectly fits original engine belt. Direct bolt‑on mounting keeps factory hole positions without any modification. It continuously supplies power for truck‑mounted electric equipment and maintains normal battery charging status for vehicles fitted with Cummins engine.
Fix Electrical System Failures Of Faulty Alternator
Worn‑out, noisy or low‑output alternator causes battery under‑charging, dim dashboard lights, difficult starting and unexpected truck shutdown, bringing costly downtime losses for truck fleets. Our genuine DCEC alternator eliminates these risks. Consistent voltage output resists heavy vibration and wide temperature changes in heavy‑duty working environments. It is an ideal replacement generator during engine maintenance, prevents sudden electrical breakdown and cuts expensive roadside repair losses for Cummins‑engine trucks.
DCEC OEM Standard & Strict Factory Testing
This alternator is qualified Cummins spare parts manufactured following original DCEC technical standards. Every finished unit passes output‑voltage testing, vibration endurance testing, heat‑dissipation inspection and visual quality check before shipment. OE numbers C4937404, C4932319, C3979372, C3979568, C4933436, C4316773 are fully compatible with matched Cummins engine models. Widely deployed on heavy‑duty truck fleets, it maintains reliable performance for long‑haul transport and construction‑site tough operating conditions.
In‑Stock Alternator For Auto‑Parts Wholesale
We supply genuine DCEC alternator as trusted supplier of Cummins engine spare parts. Ready‑stock inventory supports fast international delivery for auto‑parts wholesalers, truck repair workshops and fleet maintenance departments. Heavy‑duty carton packaging protects aluminum housing and inner copper coils against impact damage in transit. We provide OE‑compatibility confirmation and basic installation guidance. This alternator is a must‑stock item for Cummins engine electrical‑system overhaul and component replacement.
TECHNICAL SUPPORT
1. Accessories selection consultation
- Provide ** intelligent selection tools ** (such as parts matching query system), input the vehicle model VIN code or engine model to match the corresponding parts number, reducing the selection error rate.
The technical team is available online 7×12 hours to answer technical questions about accessories (such as material compatibility and installation processes).
2. Customized development support
We offer specialized R&D services for special market demands (such as heat dissipation accessories for high-temperature regions in the Middle East and dedicated suspension components for road conditions in Africa), and complete sample delivery within six weeks.
3. Training and Technical materials
Provide remote/on-site training for the customer's after-sales team (such as diagnosis of electrical control accessories and DPF regeneration operation), along with multilingual versions of the "Accessories Installation Manual" and "Troubleshooting Guide".
4. Quality Traceability and Improvement
Through the QR code traceability system (one product, one code), track the production batch of accessories and the source of raw materials, respond quickly to quality complaints and initiate improvement processes.
AFTER-SALES AND LOGISTICS SUPPORT
After-sales service
Quality Assurance Policy
-The warranty period for original factory parts is 12 months (counting from the date of signature for receipt), covering material defects, process issues, and man-made damage.
- Provide "Localized Express repair Service" : Cooperate with third-party repair networks in markets such as Southeast Asia and the Middle East, and deliver emergency parts to designated repair points within 4 hours.
Return and Exchange Process
-The customer is required to submit the test report (such as a third-party appraisal) within the warranty period. After confirmation by Dongfeng, a reissue or refund will be arranged within 5 working days.
Logistics support
Warehouse Layout
-Five major regional accessory centers have been established globally (Southeast Asia, the Middle East, Africa, South America, and Europe) to achieve "next-day delivery" for mainstream accessories (covering customers within the regions).
Emergency Logistics Plan
-Emergency parts can be directly delivered within 48 hours via the "Dongfeng Exclusive Aviation Special Line" (such as engine ECU, brake valves and other key components).
Packaging Optimization
-Use shockproof and moisture-proof packaging (such as honeycomb cartons + pearl cotton), and reinforce fragile parts (such as glass, sensors), keeping the damage rate within 0.5%.
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