Alternator 104210-9870 12V 130A 7PK Isuzu D-Max TF
Applicable models:Isuzu DMAX
Reference part number:4JJ1-TC 104210-9870 1042109870 8982258130 8-98225-813-0
| Rated output : | 12V 80A 100A 130A |
| Pulley : | 7PK |
| Size : | 24*18*17single unit inner box |
| Weight : | net weight：4.25KG gross weight：4.55KG |
| Packaging : | Neutral kraft paper packaging |
| Spot/Pre sale : | Spot goods |
| Warranty : | 1 year |
| Product number : |
| Type : | ACgenerator Alternator |
| Specification : | 12V 80A 100A 130A |
| Pulley : | 7PK |
| Brand : | nuojin |
| Number : | 104210-9870 1042109870 |
| Quality : | new |
| Delivery time : | 10 day |
Product Attributes
| Rated output | 12V 80A / 100A / 130A (title spec: 12V 130A) |
| Pulley | 7PK |
| Size | 24*18*17 CM single unit inner box |
| Weight | net weight: 4.25KG gross weight: 4.55KG |
| Packaging | Neutral kraft paper packaging |
| Spot/Pre sale | Spot goods |
| Warranty | 1 year |
Product Details
| Type | AC generator Alternator |
| Specification | 12V 80A / 100A / 130A (title spec: 12V 130A) |
| Pulley | 7PK |
| Brand | nuojin |
| Part Number | 104210-9870, 1042109870 |
| Quality | new |
| Delivery time | 10 days |
Product Overview
The 104210-9870 is an Isuzu OE-spec replacement alternator delivering 12V output with a 7-rib (7PK) pulley, engineered for the Isuzu D-Max TF pick-up with the 4JJ1-TC 3.0L turbo-diesel engine. This Denso-pattern aftermarket unit matches the original charging-system specification for this popular diesel pick-up platform.
Fitted with internal regulator design, this brand-new alternator is stocked in-house with a 1-year warranty and 10-day dispatch lead-time. The 130-amp rating listed in the title is the factory-correct level for the heavy electrical load of this diesel pick-up, supporting glow plugs, dual-battery installations, climate control, tow-pack wiring and factory electrical equipment.
Key physical specs: net weight 4.25 kg, gross weight 4.55 kg, overall dimensions 240 x 180 x 170 mm, supplied inside neutral kraft inner carton.
The 4JJ1-TC Engine Platform and D-Max TF Charging System
The Isuzu D-Max TF series is a workhorse one-tonne pick-up built for commercial and off-road use, and the 4JJ1-TC 3.0L turbo-diesel engine is among the most popular diesel options in this platform. Its charging system must support glow-plug preheating, heavy auxiliary loads, winches, tow-bar wiring and cold-climate starting, which is why a higher-output alternator is specified rather than a standard 80A unit.
The 7-rib pulley matches the original accessory-belt layout, driving alternator, water pump and power-steering pump. Installing a pulley with the wrong rib count will cause belt mis-tracking, slippage, premature belt wear and charging faults. Always cross-check the amperage label and OE number against your old alternator before ordering.
Technical Specifications
| Parameter | Specification |
|---|---|
| Isuzu OE numbers | 8982258130, 8-98225-813-0 |
| Reference/OEM cross | 104210-9870, 1042109870 |
| Voltage | 12V |
| Amperage | 130A (sheet also lists 80A / 100A) |
| Pulley | 7-rib fixed pulley (7PK) |
| Regulator | Internal |
| Engine | 4JJ1-TC 3.0L turbo-diesel |
| Quality | NEW |
| Warranty | 1 year |
| Net Weight | 4.25kg |
| Gross Weight | 4.55kg |
| Dimensions | 240 x 180 x 170mm |
| Packaging | Neutral kraft box |
| Lead Time | 10 days, in stock |
Engine Compatibility and Cross Reference
This alternator fits Isuzu D-Max TF pick-up models equipped with the 4JJ1-TC 3.0L turbo-diesel engine. Do not rely solely on vehicle model name for fitment validation; always verify engine code, old-part OE number, pulley rib-count and amp label on your original alternator.
| Vehicle | Engine Code | Notes |
|---|---|---|
| Isuzu D-Max TF | 4JJ1-TC 3.0L turbo-diesel | Verify 7PK, amperage label and mounting layout |
The OE number 8-98225-813-0 / 8982258130 belongs to the same alternator family as 104210-9870, differing only by production revision and market specification. If your original unit bears one of these numbers, 104210-9870 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. Check the amperage label on your old alternator: confirm whether it is 80A, 100A or 130A. Different amp ratings are not interchangeable.
2. Count pulley ribs: this unit requires 7PK (7-rib). Units with a different rib count are incompatible for this accessory drive setup.
3. Confirm engine code is 4JJ1-TC. Other Isuzu diesel engines use different alternator assemblies.
4. Match against OE / reference part numbers stamped on your original housing.
5. Weight cross-check: genuine matching unit weighs approximately 4.25 kg net; significant weight difference indicates wrong assembly.
Application Scenarios
Independent repair shops and Isuzu specialists servicing D-Max TF pick-ups across Asia-Pacific, Africa, Latin-America, Europe and Oceania markets.
Parts counters and jobbers stocking Japanese diesel-pickup replacement electrical components.
Fleet operators and mining, agriculture and construction workshops maintaining D-Max work vehicles.
Used-car and used-truck export traders supplying pre-owned Isuzu vehicles to global secondary markets.
Owners with winches, dual batteries, tow-bar wiring or auxiliary lighting who require a high-output charging system.
FAQ
Q: Which Isuzu models does this alternator fit?
A: It fits Isuzu D-Max TF pick-up models with the 4JJ1-TC 3.0L turbo-diesel engine. Always verify against the OE number, pulley and mounting layout of your original alternator before ordering.
Q: Is this a Denso-pattern alternator?
A: Yes. This unit matches the Denso-pattern charging system and carries the Denso number 104210-9870 together with Isuzu OE numbers 8982258130 / 8-98225-813-0.
Q: The sheet lists 80A / 100A / 130A, which amperage is correct?
A: The title specifies 12V 130A. Confirm the amperage label on your original alternator and match it before ordering, since different amp ratings are not interchangeable.
Q: My old alternator shows OE number 8982258130, will 104210-9870 work?
A: Yes. These numbers belong to the same alternator family. It serves as a direct replacement.
Q: What is the normal charging voltage after installation?
A: With the engine running at idle, battery terminal voltage should read 13.8V-14.5V; at 2000 rpm the target stabilises around 14.0-14.7V.
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 the Isuzu D-Max TF 4JJ1-TC platform: Before removing the existing alternator, perform charging-system diagnostics. Measure battery terminal running voltage with a multimeter. 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. 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 Isuzu workshop-manual specifications.
Diesel pick-ups often carry dual batteries or auxiliary wiring: after installation, verify that the main positive cable, ground straps and fusible links are in good condition and that the alternator output reaches the battery. Inexperienced home mechanics are recommended to entrust replacement work to a qualified auto-electric repair shop. Incorrect wiring risks burning the alternator or vehicle-system components.
References
Vehicle applications are compiled from the original equipment fitment data for the 104210-9870 alternator family covering the Isuzu D-Max TF with the 4JJ1-TC 3.0L turbo-diesel engine, verified against actual vehicle installation tests and after-sales maintenance experience.
