Included in Rebuild Kit:
Bearing DE
Bearing SRE
Brush Holder Assembly
Terminal Block
Slip Ring
Part Type: Alternator Rebuild Kit
Manufacturer: Denso
Mfr Series: Hairpin
Lester Number: 11940
Voltage: 12V
Amperage: 180A
Rotation: CW
Pulley Class: SD6
Design: ER/IF
Fitment Note: 180 Amp
Chrysler: 56029732AB, P56029732AB
Denso: 421000-7181, TN421000-7181
11940
Chrysler Van
Pacifica V6 3.6L 3604cc 220cid VIN G 2017–2020
Voyager V6 3.6L 3604cc 220cid VIN G 2020
Ram Van
ProMaster 1500 V6 3.6L 3604cc 220cid 2022–2025
ProMaster 2500 V6 3.6L 3604cc 220cid 2022–2025
ProMaster 3500 V6 3.6L 3604cc 220cid 2022–2025
| Make | Model | Year | Engine |
| Chrysler | Pacifica | 2017-2020 | V6 3.6L 3604cc 220cid VIN G |
| Chrysler | Voyager | 2020 | V6 3.6L 3604cc 220cid VIN G |
| Ram | ProMaster 1500 | 2022-2025 | V6 3.6L 3604cc 220cid |
| Ram | ProMaster 2500 | 2022-2025 | V6 3.6L 3604cc 220cid |
| Ram | ProMaster 3500 | 2022-2025 | V6 3.6L 3604cc 220cid |
Complete aftermarket rebuild solution for compatible alternators
Includes essential replacement components for alternator rebuilding and repair
Helps restore proper charging system performance
Helps replace common internal wear components during a complete rebuild
Manufactured for dependable fit, performance, and long service life
Ideal for professional rebuilders, automotive repair shops, and DIY technicians
Convenient alternative to sourcing individual rebuild components separately
Cross-referenced to OEM and aftermarket alternator part numbers for easier identification
What Does an Alternator Rebuild Kit Do?
An alternator rebuild kit provides a selection of replacement components commonly needed to service and rebuild a worn or failed alternator. Depending on the specific kit, components may include bearings, brushes, brush holders, slip rings, rectifiers, voltage regulators, and other service parts required for the applicable alternator design.
Rebuilding an alternator allows worn internal components to be replaced while retaining serviceable major components such as the rotor, stator, housing, and pulley when they remain within specification. A properly rebuilt alternator can help restore reliable charging output, smooth mechanical operation, and dependable electrical system performance.
Always review the Kit Contents for the specific rebuild kit before ordering, as included components vary by alternator application.
Consider rebuilding or servicing the alternator if you notice:
Battery warning light illuminated
Low or inconsistent charging voltage
Battery not charging properly
Intermittent charging system operation
Grinding, whining, or bearing noise
Worn brushes or slip rings
Failed voltage regulator or rectifier
Excessive bearing play or roughness
Internal component wear discovered during alternator inspection or testing
Installation should be performed by a qualified technician or experienced alternator rebuilder. Before rebuilding the alternator, completely disassemble and inspect the unit for worn, damaged, overheated, or contaminated components.
Inspect the rotor, stator, slip rings, bearings, rectifier, voltage regulator, brushes, brush holder, pulley, housing, terminals, insulators, wiring, and fasteners as applicable to the alternator design.
Always verify the Lester number, OEM alternator number, alternator series, specifications, and product photos before ordering. After reassembly, bench-test the alternator to verify proper charging output and overall operation before returning it to service.
Depending on the contents of your rebuild kit and the condition of the alternator, inspect other components that may require replacement:
Important: Rebuild kit contents vary by application. This kit includes only the components specifically listed in the product description. Components listed above are inspection recommendations and are not necessarily included with the rebuild kit.
RC Auto Electric specializes in alternator and starter rebuilding components for professional rebuilders, repair shops, automotive technicians, and DIY enthusiasts. Our extensive catalog includes thousands of OEM and aftermarket electrical components backed by accurate cross-reference information to help simplify part identification and reduce ordering mistakes.
Compatibility information is provided as a reference only. Manufacturing revisions, production changes, and previous rebuilding modifications may affect alternator components and rebuild kit compatibility. Always compare the Lester number, OEM alternator number, alternator series, specifications, included components, cross-reference numbers, and product photographs before ordering.
This rebuild kit includes only the components specifically listed in the product description. If you are unsure about compatibility or kit contents, contact RC Auto Electric before ordering.
