Product Attributes

Product Details

Product Overview

The 104210-6590 is a high-output replacement alternator delivering 12V 220A with a 6-rib (6PK) pulley, engineered for the Jeep Grand Cherokee. This Denso-pattern aftermarket unit matches the original charging-system specification for large-displacement, high-electrical-load SUV applications.

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 220-amp rating is factory-correct for the heavy electrical load of large SUV platforms, supporting climate control, heated and powered accessories, premium infotainment and factory electrical equipment.

Key physical specs: net weight 7.35 kg, gross weight 7.55 kg, overall dimensions 240 x 180 x 170 mm, supplied inside neutral kraft inner carton.

The Grand Cherokee Platform and 220A High-Output Charging System

The Jeep Grand Cherokee is a large SUV with a substantial factory electrical load, which is why the charging system is rated at 220A rather than a lower output. The 6-rib pulley matches the original accessory-belt layout, driving alternator, water pump and power-steering pump.

This high-output Denso-pattern unit is specified as 12V 220A, matching the factory charging-system specification of these platforms. 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 Jeep Grand Cherokee models that use the 12V 220A 6PK alternator family. 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.

Multiple Denso, Chrysler and supplier OE 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, 104210-6590 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 220A. Different amp ratings are not interchangeable.

• 2. Count pulley ribs: this unit requires 6PK (6-rib). Units with a different rib count are incompatible for this accessory drive setup.

• 3. Confirm engine code and production year of the Grand Cherokee match the original fitment list.

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

• 5. Weight cross-check: genuine matching unit weighs approximately 7.35 kg net; significant weight difference indicates wrong assembly.

Application Scenarios

• Independent repair shops and Jeep specialists servicing Grand Cherokee models across Europe, Oceania, Asia-Pacific and Latin-American markets.

• Parts counters and jobbers stocking American-brand SUV replacement electrical components.

• Vehicle owners restoring and maintaining original-spec Jeep Grand Cherokee models.

• Used-car export traders supplying pre-owned Jeep vehicles to global secondary markets.

• Owners with heavy electrical accessories who require a factory-spec high-output charging system.

FAQ

Q: Which Jeep models does this alternator fit?
A: It fits Jeep Grand Cherokee models that use the 12V 220A 6PK alternator family. 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 high-output unit with a 1-year warranty and 10-day dispatch lead-time.

Q: My old alternator shows OE number P04801835AC or 104210-6591, will 104210-6590 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 13.5V-14.5V, and the voltage fluctuation should not exceed plus or minus 0.5V when accelerating to 2000 rpm.

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 Jeep platforms, the following installation guidance is based on the factory-style service method, using the Cherokee 4.0L and Compass as examples.

Preparation: Park the vehicle on a flat, accessible surface, open the hood and remove the ignition key. Disconnect the negative (black) battery cable with a 12mm socket wrench and wait 5-10 minutes for the system capacitors to discharge. Confirm the new alternator is compatible with the vehicle model and engine displacement, and inspect it for free-rotating bearings, clean terminals and intact rectifier.

Removal (Cherokee 4.0L example): Locate the alternator at the front of the engine compartment. Remove the bolt securing the alternator electrical connection with a 12mm socket and slide the connector off. Find the idler pulley at the bottom of the drive-belt assembly, remove its mounting bolt with a 14mm socket and slide the pulley off the shaft to loosen the belt. Remove the four alternator mounting bolts with a 12mm socket and slide the old alternator out.

Removal (Compass example): Locate the belt routing diagram and the tensioner pulley. Insert a wrench or socket into the tensioner slot and turn it clockwise to release belt tension, then remove the belt from the alternator pulley. Remove the alternator pivot and mounting bolts, rotate the alternator to access the wiring, remove the B+ terminal cover and nut together with the eyelet wires, and unplug the field-wire connector by pressing the release tab. Remove the alternator, prying gently if necessary.

Installation: Install in reverse order of removal. For Cherokee, slide the new alternator into position, secure the four mounting bolts, refit the belt aligned with the pulley grooves, reinstall the idler pulley and connect the electrical connector. For Compass, position the eyelet wires and B+ cable on the mounting stud and tighten the nut, refit the belt by turning the tensioner clockwise, and tighten mounting and pivot bolts. Torque the alternator mounting bolts to 20-30 N.m (refer to the vehicle manual). Adjust belt tension so the midpoint deflection is 8-12 mm when pressed.

Testing: Reconnect the negative battery cable, start the vehicle and confirm the charging indicator goes out. Measure output voltage with a multimeter: 13.5V-14.5V at idle with fluctuation no greater than plus or minus 0.5V at 2000 rpm. Listen for abnormal bearing noise and check for overheating. Recheck belt tension and bolt tightness within the first 500 km.

Safety reminders: Never disconnect electrical connections while the alternator is running, to avoid voltage spikes that can damage on-board electronics. After Compass installation, clear fault codes. Keep cables away from hot engine parts and secure them against vibration.

References

The installation procedure and safety guidance are compiled from professional automotive repair references such as PCauto and Autohome and from Jeep-style service methods, cross-checked against actual vehicle installation tests and after-sales maintenance experience.

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