Alternator 3701020B-E01 12V 65A 4PK Great Wall Deer

Product Attributes

Product Details

Product Overview

The 3701020B-E01 is a Great Wall OE-spec replacement alternator delivering 12V 65A output with a 4-rib (4PK) pulley, engineered for the Great Wall Deer pick-up. This aftermarket unit matches the original charging-system specification of this popular Chinese-built work 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 65-amp rating is factory-correct for the stock electrical load of this pick-up, supporting standard lighting, ignition, climate control and factory electrical equipment.

Key physical specs: net weight 4.5 kg, overall dimensions 240 x 180 x 170 mm, supplied inside neutral kraft inner carton.

The Great Wall Deer Platform and 65A Charging System

The Great Wall Deer is a long-running Chinese-built compact pick-up family, widely exported to Africa, Latin-America, the Middle East, Russia and Central Asia. It is one of the most common light commercial vehicles on those markets, and its electrical system is a conventional 12V single-battery layout requiring a 65A alternator for standard workshop and farm use.

This unit is specified as 12V 65A, matching the factory charging-system specification of these platforms. The 4-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 against your old alternator before ordering.

Technical Specifications

Engine Compatibility and Cross Reference

This alternator fits the Great Wall Deer pick-up. Because the Deer was produced across many years with several engine options, 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.

The numbers JFZ1927 and ALM5731BS belong to the same alternator family as 3701020B-E01. If your original unit bears one of these numbers, 3701020B-E01 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 it is rated for 65A. Different amp ratings are not interchangeable.

• 2. Count pulley ribs: this unit requires 4PK (4-rib). Units with a different rib count are incompatible for this accessory drive setup.

• 3. Confirm the engine code and production year of your Deer match the original fitment.

• 4. Match against OE / reference part numbers stamped on your original housing.

• 5. Weight cross-check: genuine matching unit weighs approximately 4.5 kg net; significant weight difference indicates wrong assembly.

Application Scenarios

• Independent repair shops and pick-up specialists servicing Great Wall Deer across Africa, Latin-America, the Middle East, Russia and Central Asia.

• Parts counters and jobbers stocking Chinese light-commercial-vehicle replacement electrical components.

• Fleet operators and agriculture, mining and construction workshops maintaining Deer work vehicles.

• Used-vehicle export traders supplying pre-owned Great Wall pick-ups to global secondary markets.

• Owners performing standard maintenance on original-spec charging systems.

FAQ

Q: Which Great Wall models does this alternator fit?
A: It fits the Great Wall Deer pick-up. Always verify against the OE number, pulley and mounting layout of your original alternator before ordering.

Q: Is this alternator new?
A: Yes, this is a brand-new unit with a 1-year warranty and 10-day dispatch lead-time.

Q: My old alternator shows OE number 3701020B or JFZ1927, will 3701020B-E01 work?
A: Yes. These numbers belong to the same alternator family, differing only by production revision and market specification. 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 Great Wall Deer 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 Great Wall workshop-manual specifications.

On vehicles with a long service history, inspect the drive belt and tensioner for wear while the alternator is removed, and replace them if necessary. 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 3701020B-E01 alternator family covering the Great Wall Deer pick-up, verified against actual vehicle installation tests and after-sales maintenance experience.

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