Alternator JFZ273B1-C 24V 70A 1PK Yuchai 4110ZQ
Applicable models:4110ZQ
Reference part number: 1531F-3701010-002 JFZ273B1-C JFZ273B2-C JFZ273B1-C
| Rated output : | 24V 70A |
| Pulley : | 1PK |
| Size : | 24*18*17single unit inner box |
| Weight : | net weight：5.KG |
| Packaging : | Neutral kraft paper packaging |
| Spot/Pre sale : | Spot goods |
| Warranty : | 1 year |
| Product number : |
| Type : | ACgenerator Alternator |
| Specification : | 24V 70A |
| Pulley : | 1PK |
| Brand : | nuojin |
| Number : | 273B1-C |
| Quality : | new |
| Delivery time : | 10 day |
Product Attributes
| Rated output | 24V 70A |
| Pulley | 1PK (single V-belt) |
| Size | 24*18*17 CM single unit inner box |
| Weight | net weight: 5KG (gross weight not stated on page) |
| Packaging | Neutral kraft paper packaging |
| Spot/Pre sale | Spot goods |
| Warranty | 1 year |
Product Details
| Type | AC generator Alternator |
| Specification | 24V 70A |
| Pulley | 1PK single V-belt |
| Brand | nuojin |
| Part Number | JFZ273B1-C |
| Quality | new |
| Delivery time | 10 days |
Product Overview
The JFZ273B1-C is a Yuchai OE-spec replacement alternator delivering 24V output at 70A with a 1PK single-groove V-belt pulley, engineered for the Yuchai 4110ZQ series diesel engines used in truck and bus applications. This brand-new aftermarket unit, identified by the JFZ273B2-C and 1531F-3701010-002 cross numbers, matches the original 24-volt charging-system specification of these Chinese commercial platforms.
Fitted with internal regulator design, this alternator is stocked in-house with a 1-year warranty and 10-day dispatch lead-time. The 70-amp rating supports the standard electrical load of these trucks and buses, including lighting, instrumentation, climate control, powered accessories and battery charging.
Key physical specs: net weight 5 kg, overall dimensions 240 x 180 x 170 mm, supplied inside neutral kraft inner carton.
The Yuchai 4110ZQ Diesel Platform and 24V 70A Charging System
Yuchai 4110ZQ series diesel engines power a wide range of Chinese trucks and buses. These commercial vehicles use a 24-volt electrical system with two-series battery banks, which requires a 24V alternator. The 70A output supports the standard electrical equipment of these platforms including lighting, instrumentation, climate control and battery charging.
This unit is specified as 24V 70A, matching the factory charging-system specification of these platforms. The 1PK single-groove pulley matches the original V-belt layout. Never replace a single-groove pulley unit with a 2PK, 4PK, 6PK or 7PK unit: the belt layouts are not interchangeable, and the wrong pulley will cause belt mis-tracking, slipping and charging faults. Always cross-check against your old alternator before ordering.
Technical Specifications
| Parameter | Specification |
|---|---|
| Alternator numbers | JFZ273B1-C, JFZ273B2-C |
| Reference/OEM cross | 1531F-3701010-002 |
| Voltage | 24V (truck/bus system) |
| Amperage | 70A |
| Pulley | 1PK single groove (1 groove) |
| Regulator | Internal |
| Engine | Yuchai 4110ZQ series diesel |
| Quality | NEW |
| Warranty | 1 year |
| Net Weight | 5kg |
| Gross Weight | Not stated on page |
| Dimensions | 240 x 180 x 170mm |
| Packaging | Neutral kraft box |
| Lead Time | 10 days, in stock |
Engine Compatibility and Cross Reference
This alternator fits the following applications. Do not rely solely on the engine name for fitment validation; always verify engine code, production year, old-part OE number, pulley type and amp label on your original alternator.
| Application | Engine | Notes |
|---|---|---|
| Truck applications | Yuchai 4110ZQ series diesel | Verify 24V, 70A, 1PK and mounting layout |
| Bus applications | Yuchai 4110ZQ series diesel | Verify 24V, 70A, 1PK and mounting layout |
Multiple Chinese alternator and vehicle 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, JFZ273B1-C 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 24V alternator for commercial vehicle systems. Never fit it to a 12V passenger car system, and never fit a 12V unit here.
2. Check the amperage label on your old alternator: confirm it is rated for 70A. Different amp ratings are not interchangeable.
3. Confirm the pulley: this unit uses a 1PK single-groove V-belt pulley. Units with 2PK, 4PK, 6PK or 7PK pulleys are not interchangeable with this drive layout.
4. Confirm the exact Yuchai engine code (4110ZQ series) and application of your vehicle.
5. Weight cross-check: genuine matching unit weighs approximately 5 kg net; significant weight difference indicates wrong assembly.
Application Scenarios
Independent repair shops and commercial vehicle specialists servicing Yuchai-powered trucks and buses across China, Asia-Pacific, the Middle East, Africa and Latin-America.
Parts counters and jobbers stocking Chinese commercial vehicle charging-system components.
Fleet workshops maintaining Yuchai 4110ZQ-powered delivery and passenger fleets.
Bus operators maintaining 24V charging systems on coach fleets.
Used-vehicle export traders supplying pre-owned Chinese trucks and buses to global secondary markets.
FAQ
Q: Which engines does this alternator fit?
A: It fits Yuchai 4110ZQ series diesel engines used in truck and bus applications. Always verify against the OE number, pulley and mounting layout of your original alternator before ordering.
Q: Is this alternator 24V or 12V?
A: This is a 24V alternator for commercial vehicle (truck and bus) electrical systems. Do not fit it to a 12V passenger car system.
Q: My old alternator shows OE number JFZ273B2-C or 1531F-3701010-002, will JFZ273B1-C work?
A: Yes. These numbers belong to the same alternator family, differing only by production revision and specification. It serves as a direct replacement.
Q: Is this alternator 1PK?
A: Yes. This unit uses a 1PK single-groove V-belt pulley. Confirm the pulley type on your old alternator before ordering.
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 Yuchai-powered trucks and buses: 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 across the bank 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 single-groove V-belt is correctly seated in the pulley groove 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 Yuchai 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
Vehicle applications are compiled from the original equipment fitment data for the JFZ273B1-C alternator family covering Yuchai 4110ZQ series diesel applications listed in the Engine Compatibility table, verified against actual installation tests and after-sales maintenance experience.
