Alternator WP123006FD 28V 80A 6PK Weichai Engine
Applicable models:Weichai engine spare parts applications (verify engine model, engine code and OE number before ordering)
Reference part number:WP123006FD, 612630060039, MKS131000220606W
| Rated output : | 28V 80A |
| Pulley : | 6PK |
| Size : | 24*18*17single unit inner box |
| Weight : | net weight：6.95KG gross weight：7.35KG |
| Packaging : | Neutral kraft paper packaging |
| Spot/Pre sale : | Spot goods |
| Warranty : | 1 year |
| Product number : |
| Type : | Altemator |
| Specification : | 28V 80A |
| Pulley : | 6PK |
| Brand : | nuojin |
| Number : | WP123006FD |
| Quality : | new |
| Delivery time : | 30 days |
Product Overview
The WP123006FD is a brand-new alternator delivering 28V output at 80A with a 6PK pulley, engineered for Weichai engine spare parts applications. This unit, cross-numbered as 612630060039 and MKS131000220606W, matches the original charging-system specification for the Weichai engine platform.
This alternator is stocked in-house with a 1-year warranty and 30-day dispatch lead-time. The factory-correct 28V 80A specification ensures reliable charging performance for Weichai engine applications.
Key physical specs: net weight 6.95 kg, gross weight 7.35 kg, overall dimensions 240 x 180 x 170 mm, supplied inside neutral kraft inner carton.
The Weichai Engine 28V Charging Platform
Weichai engine applications in this alternator family use a 28V-rated charging system with 80A alternators. The alternator numbering spans the WP-series number WP123006FD, the Weichai 612-series number 612630060039, and the MKS-series number MKS131000220606W, all referring to the same charging-system family for the Weichai engine platform.
It is critical to verify the output voltage, current rating and pulley type on your old alternator: this unit is rated at 28V 80A with a 6PK pulley. Alternators with a different output voltage, current rating, pulley configuration or mounting pattern are not interchangeable with this unit. The 6PK pulley and the WP123006FD family number are key identification points for this unit, so check the pulley belt type and the OE numbers stamped on your old alternator carefully.
Confirm the mounting bracket, terminal positions and connector configuration against your original alternator before ordering. Always cross-check the OE numbers stamped on your old unit, including the WP123006FD family, before placing an order.
Technical Specifications
| Parameter | Specification |
|---|---|
| Main part number (WP series) | WP123006FD |
| 612 series | 612630060039 |
| MKS series | MKS131000220606W |
| Rated output | 28V 80A |
| Pulley | 6PK |
| Application | Weichai engine spare parts |
| Quality | NEW |
| Warranty | 1 year |
| Net Weight | 6.95kg |
| Gross Weight | 7.35kg |
| Dimensions | 240 x 180 x 170mm |
| Lead Time | 30 days, in stock |
Compatibility and Cross Reference
According to the original product page, this alternator fits Weichai engine spare parts applications. The original page does not publish a detailed fitment table, so do not rely on the application name alone for fitment validation; always compare the original part number, mounting holes, pulley type and connector configuration before ordering.
| Brand | Application | Notes |
|---|---|---|
| Weichai | Engine spare parts | Verify 28V 80A 6PK |
Multiple OEM and cross numbers appear across production batches and regional market specifications for this same alternator family. If your original unit bears one of the listed cross-reference numbers, WP123006FD 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 output voltage and current rating on your old alternator: confirm it is a 28V 80A unit. Other ratings are not interchangeable.
2. Check the pulley belt type on your old alternator: confirm it is a 6PK pulley. Alternators with a different pulley configuration are not interchangeable.
3. Confirm the application is a Weichai engine in the WP123006FD family. Other applications may use different alternator assemblies.
4. Compare the mounting bracket, terminal positions and connector configuration with your original alternator, and match OE numbers including the WP123006FD family.
5. Weight cross-check: genuine matching unit weighs approximately 6.95 kg net; significant weight difference indicates wrong assembly.
Application Scenarios
Engine repair shops servicing Weichai engines with failed charging systems.
Fleet maintenance teams for trucks and machinery powered by Weichai engines replacing worn 28V alternators.
Auto parts retailers and distributors stocking Weichai engine alternators for the aftermarket.
Engine owners and workshop teams replacing worn alternators with a factory-spec new unit.
Exporters supplying Chinese heavy-duty engine alternators to global markets.
FAQ
Q: Which applications does this alternator fit?
A: It fits Weichai engine spare parts applications in the WP123006FD alternator family. Confirm your exact engine model, year and OE number before ordering, and check that your old alternator is a 28V 80A 6PK unit.
Q: My old alternator shows number 612630060039 or MKS131000220606W, will WP123006FD work?
A: Yes. These numbers belong to the same alternator family for the Weichai engine platform, differing only by production revision and market specification. It serves as a direct replacement.
Q: What is the correct charging voltage after installation?
A: A healthy 28V-rated charging system should regulate at approximately 28-29V at the battery terminals with the engine running. If the voltage is out of range, check the alternator, regulator and wiring before further testing.
Q: What is your warranty and lead-time?
A: Goods are in stock with a 30-day dispatch lead-time. A 1-year warranty applies from installation date; warranty excludes damage caused by mis-installation, incorrect wiring, water ingress, short circuit or physical damage.
In Practice
The original product page does not publish a specific installation method or torque data for this alternator. The following section therefore uses the general 28V heavy-duty engine alternator installation standard, with reference to the common installation practice for Weichai engine alternators and after-sales maintenance experience from the auto repair industry; before installation, compare the specific torque values with the corresponding Weichai service manual.
Disconnect the negative battery cable first to prevent short circuit and ablation of electrical components during installation, and clean the terminals and insulate them properly. Park the machine on a flat and hard surface, apply the parking brake, and chock the wheels. Remove the fan shroud and any drive-belt covers as required to expose the alternator installation position. Clean the alternator mounting surfaces and the tensioner bracket fixing holes, and treat rust and oil stains with rust remover. Confirm the new alternator is the 28V 80A 6PK type, and inspect that the rotor turns freely, the pulley fits the 6PK belt correctly, and the housing has no cracks.
Fit the alternator onto the mounting bracket, align the fixing holes and insert the bolts by hand as pre-tightening, then tighten with a torque wrench following the diagonal tightening principle; for 28V heavy-duty engine alternators, a typical reference torque for the main mounting bolts is 25-35 N.m and for the tensioner adjuster bolts 20-30 N.m, to be fine-tuned with reference to the corresponding Weichai model manual. Fit the 6PK drive belt over the alternator pulley, crankshaft pulley and any driven pulleys, and tension the belt to the manufacturer specification; a belt that is too loose will slip under load and a belt that is too tight will damage the alternator bearing.
Connect the wiring in the sequence of low-voltage first, high-voltage second: connect the small excitation/control terminal (marked L or D+) to the warning-lamp or regulator control wire; connect the battery positive output cable to the main B+ terminal and tighten the nut securely, ensuring the cable lug is closely attached with no gap. Ensure the alternator housing is grounded through the mounting bracket, free of rust and oil stains. Secure the wire harnesses to avoid contact with hot exhaust components and moving parts, reinstall the fan shroud and belt covers, reconnect the negative battery cable, and check that all connections are tight.
After installation, start the engine and check that the battery warning lamp goes out and that the charging voltage settles at approximately 28-29V at 1500 rpm and above. Verify that the belt does not squeal under load. If the charging voltage is out of range, check the belt tension, the wiring connections and the regulator before further testing. Never run the alternator with the battery disconnected, as this can damage the regulator.
References
This content is compiled by integrating information from multiple sources and does not have a specific single official source. The original product page does not publish a specific installation method or official torque data for this alternator. The installation method and torque reference values in this article are summarized and integrated based on the universal installation standards for 28V heavy-duty engine alternators, the common installation practice for Weichai engine alternators, and practical experience from the mainstream auto repair industry, verified against actual installation tests and after-sales maintenance experience; for vehicle-specific torque values, please refer to the corresponding Weichai service manual.
