Alternator 37N01010 28V 45A 8PK Cummins 6BT
Applicable models:CUMMINS 6BT
Reference part number: 37N-01010 C4938600 37N01010 37N-01010
| Rated output : | 28V 45A |
| Pulley : | 8PK |
| Size : | 24*18*17single unit inner box |
| Weight : | net weight：7.2KG gross weight：7.65KG |
| Packaging : | Neutral kraft paper packaging |
| Spot/Pre sale : | Spot goods |
| Warranty : | 1 year |
| Product number : |
| Type : | ACgenerator Alternator |
| Specification : | 28V 45A |
| Pulley : | 8PK |
| Brand : | nuojin |
| Number : | 4938600 |
| Quality : | new |
| Delivery time : | 10 day |
Product Attributes
| Rated output | 28V 45A |
| Pulley | 8PK (multi-rib, customizable on request) |
| Size | 24*18*17 CM single unit inner box |
| Weight | net weight: 7.2KG gross weight: 7.65KG (see weight note below) |
| Packaging | Neutral kraft paper packaging |
| Spot/Pre sale | Spot goods |
| Warranty | 1 year |
Product Details
| Type | AC generator Alternator |
| Specification | 28V 45A |
| Pulley | 8PK |
| Brand | nuojin |
| Part Number | 4938600 (Cummins OE core number) |
| Quality | new |
| Delivery time | 10 days |
Product Overview
The 37N-01010 is a Dongfeng / Cummins OE-spec replacement alternator delivering 28V output at 45A with an 8PK multi-rib pulley, engineered for Cummins B-series diesel engines including the 6BT and for Dongfeng commercial vehicles equipped with these engines. This brand-new, brushless aftermarket unit, identified by the C4938600 and 3701N-010 cross numbers, matches the original 28-volt charging-system specification of these heavy-duty platforms.
The brushless design eliminates carbon brushes and slip rings, reducing routine maintenance and extending service life. Fitted with a built-in fully sealed transistor regulator, this alternator is stocked in-house with a 1-year warranty and 10-day dispatch lead-time.
Key physical specs: net weight 7.2 kg, gross weight 7.65 kg, overall dimensions 240 x 180 x 170 mm, supplied inside neutral kraft inner carton.
The Cummins B-Series 6BT Diesel Platform and 28V Brushless Charging System
Cummins B-series engines (B3.9, B5.9, 6BT, 6BTA, 6BT5.9) power heavy-duty trucks, buses and construction machinery worldwide. This alternator delivers a 28V charging output, matching the heavy-duty 24-volt system standard with a charge voltage in the 28V range, supporting lighting, instrumentation, climate control, powered accessories and battery charging across shift-long operation.
This unit is specified as 28V 45A. The 8PK multi-rib pulley matches the original accessory-belt layout. The brushless rotor design brings a key benefit: no brushes or slip rings to wear out, lower maintenance cost and more reliable output in dusty or high-vibration operating environments.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 37N-01010 / 37N01010 |
| Cummins OE Number | 4938600 (core matching number) |
| Dongfeng OE Number | 3701N-010 (original factory matching number) |
| Voltage / Current | 28V / 45A |
| Rectifier Structure | 11-diode rectifier (power generation efficiency at least 85%) |
| Excitation Mode | Brushless (no brushes / slip rings) |
| Grounding | Negative grounding |
| Regulator | Built-in fully sealed transistor regulator (maintenance-free) |
| Weight | Net 7.2kg / gross 7.65kg per attributes block (page parameters block states approx 8-8.5kg, confirm at order) |
| Pulley Groove | Standard 8PK (customizable upon request) |
| Warranty | 1 year |
| Lead Time | 10 days, in stock |
Engine Compatibility and Cross Reference
This alternator fits the following engines and vehicles. Do not rely solely on the model name for fitment validation; always verify engine code, production year, old-part OE number, pulley type and amp label on your original alternator.
| Category | Specific Application |
|---|---|
| Core Engines | Cummins B3.9, B5.9, 6BT, 6BTA, 6BT5.9 series diesel engines |
| Commercial Vehicles | Dongfeng EQ1108G6D, EQ153, EQ145, EQ1230, EQ1290, EQ1060, EQ1081, EQ3092, Dongfeng Xiaobawang, Dongfeng Jingang, Dongfeng Jinba, Dongfeng Kangba |
| Engineering Machinery and Special Equipment | LiuGong loaders, EC210 excavators, and other equipment equipped with Cummins B series engines |
Multiple Cummins and Dongfeng OE numbers appear across production batches and regional specifications for this same alternator family. If your original unit bears one of the listed cross-reference numbers, 37N-01010 serves as a direct drop-in replacement.
What to Look for in a Replacement
Follow these five verification steps before placing your order to avoid wrong-part returns:
1. Confirm the system voltage: this is a 28V-output alternator for heavy-duty 24V systems. Never fit it to a 12V passenger car system, and never fit a 12V or 24V-nominal unit here.
2. Check the amperage label on your old alternator: confirm it is rated for 45A. Different amp ratings are not interchangeable.
3. Count pulley ribs: this unit requires 8PK. Units with a different rib count are incompatible for this accessory drive setup.
4. Confirm the exact Cummins engine code (6BT / 6BTA / B5.9 etc.) and vehicle application.
5. Weight cross-check: the page lists 7.2 kg net in the attributes block and approximately 8-8.5 kg in the parameters block; confirm weight with our team when shipping matters.
Application Scenarios
Independent repair shops and heavy-duty specialists servicing Cummins B-series powered trucks and buses across China, Asia-Pacific, the Middle East, Africa, Europe and Latin-America.
Fleet workshops maintaining Dongfeng commercial fleets (EQ series, Xiaobawang, Jingang, Jinba, Kangba).
Construction and mining equipment maintenance for LiuGong loaders, EC210 excavators and other Cummins B-series powered machinery.
Parts counters and jobbers stocking Chinese heavy-duty charging-system components.
Used-vehicle and used-equipment export traders supplying pre-owned trucks and machinery to global secondary markets.
FAQ
Q: Which engines does this alternator fit?
A: It fits Cummins B-series diesel engines including B3.9, B5.9, 6BT, 6BTA and 6BT5.9, as used in Dongfeng commercial vehicles, LiuGong loaders, EC210 excavators and similar equipment. Always verify against the OE number, pulley and mounting layout of your original alternator before ordering.
Q: Is this alternator brushless?
A: Yes. The brushless excitation design has no carbon brushes or slip rings, reducing maintenance and extending service life.
Q: Is this alternator 28V or 24V?
A: The unit delivers 28V charging output, matching heavy-duty 24-volt system standards. Do not fit it to a 12V passenger car system.
Q: My old alternator shows OE number C4938600 or 3701N-010, will 37N-01010 work?
A: Yes. These numbers belong to the same alternator family. It serves as a direct replacement.
Q: What is your warranty and lead-time?
A: Goods are in stock with a 10-day dispatch lead-time. A 1-year warranty applies from installation date; warranty excludes damage caused by mis-installation, wrong belt tension, or vehicle-wiring faults.
In Practice
For technicians working on Cummins B-series heavy-duty vehicles: Before removing the existing alternator, perform charging-system diagnostics. Measure battery terminal running voltage with a multimeter: on a 24V system expect around 27.6-28.8V when charging. Weak batteries, corroded ground connections or a faulty main harness can mimic alternator failure symptoms. Always disconnect the battery negative terminal before commencing removal work.
Take photos of wiring connectors and bolt positions during disassembly to avoid mis-routing during reassembly. Confirm the 8PK belt is correctly seated in all pulley grooves and observe correct belt tension: 10-15 mm deflection when pressing the belt mid-span. Over-tightened belts accelerate alternator bearing wear; loose tension creates slipping and insufficient charging. Torque mounting bolts to Cummins / Dongfeng workshop-manual specifications.
Inexperienced mechanics are recommended to entrust replacement work to a qualified auto-electric repair shop. Incorrect wiring risks burning the alternator or vehicle electrical components.
References
Engine and vehicle applications are compiled from the original equipment fitment data for the 37N-01010 alternator family covering the Cummins B-series and Dongfeng applications listed in the Engine Compatibility table, verified against actual installation tests and after-sales maintenance experience.
