Description
Vehicle Compatibility
Complete alternator rectifier for Delco alternator applications using the 21SI, 22SI, 23SI and CS144 series where the alternator uses a matching IR/EF rectifier specification. This rectifier is commonly used in heavy duty and fleet alternator rebuild work, and is listed for Ford and Volvo applications as well as multiple industrial and truck platforms where the Delco alternator series matches. Confirm by alternator label (21SI/22SI/23SI/CS144) and reference number before ordering.
- Delco Alternator Series: 21SI; 22SI; 23SI; CS144
- Ford: Delco alternator applications using 21SI / CS144 rectifier specification
- Volvo: Delco alternator applications using 21SI / CS144 rectifier specification
- Mack: Delco alternator applications where the rectifier reference matches
- Case: Delco alternator applications where the rectifier reference matches
- Euclid: Delco alternator applications where the rectifier reference matches
- Locomotive / Industrial: Delco alternator applications where the rectifier reference matches
Specifications
- Reference: RCT2611
- Part Type: Alternator Rectifier
- System Voltage: 12V
- Alternator Manufacturer / Series: Delco 21SI / 22SI / 23SI / CS144
- Type: IR/EF
- Cross Reference: 10470609
Features
- Delco rectifier assembly to support alternator overhaul on compatible 21SI, 22SI, 23SI and CS144 alternators
- IR/EF specification designed for matched alternator housings and rectification requirements
- Commonly used across fleet, truck and industrial applications where Delco alternators are fitted
- Helps restore charging performance where failed diode packs cause low charge, battery drain, or excessive AC ripple
- Best practice is to confirm alternator series and reference number 10470609 before installation
Why Buy From Us
- Local South African stock with nationwide courier delivery
- 12-month warranty subject to correct application and installation
- Fitment support using alternator labels and clear photos of the existing rectifier and terminal layout
- Trusted by workshops and fleet operators for dependable charging system components
Trusted by thousands of South African drivers for quality and durability.
Installation & Maintenance Tips
- Disconnect the battery before alternator removal or rectifier replacement
- Confirm the alternator series (21SI/22SI/23SI/CS144) and rectifier reference match before fitting
- Inspect stator windings, solder joints and insulation while the alternator is open
- Replace worn brushes and check slip rings during the rebuild to prevent repeat failures
- After installation, verify charging voltage under load and test for abnormal AC ripple
- If you are unsure about alternator repairs, have the unit fitted and tested by a qualified auto electrician
Important: Product information, kit contents and compatibility are provided as a guide and may contain errors or omissions. Please verify that this part and any included components are correct for your vehicle before installation. For full details see our Website Disclaimer (Errors & Omissions).