Vehicle Compatibility
Complete alternator rectifier for Bosch alternator applications where the alternator uses a matching 114mm outer diameter rectifier plate and the same diode configuration. Specified as Bosch IR/EF (K1) type with 6 diodes, 35A rating, push-on terminals, and supplied with diode trio (without W-terminal). Used across a wide range of European vehicle alternators where the OE number and rectifier dimensions match. Confirm by alternator label, rectifier OD and terminal layout before ordering.
- VAG (Audi / VW / Seat / Skoda): 028903359; 028903359A; 036903359B; 046903359B; 049903359; 049903359E; 049903359F; 052903371A; 056903371A; 059903371A; 059903371B; NG32033229; 0003980591
- BMW: 12311354682
- Ford: 71BB10304BA; 72GB10304AA; 74EB10304AA; 74EB10304BA; 75BB10304AA; 75EB10304AA; 82DB10304BA; 85BB10304BA
- Mercedes-Benz: 0001541316; 0001541416; 0001542016; 0001542416; 0001542916; 0001543216; 0001545016; 0001546416; 0001546816; 0001547616; 0001548116; 0001548216
- Opel: 1205561
- Saab: 8518854
- Volvo: 3544567; 6239264
- Scania: 305158
- Steyr: 61000090743; 61200090706; 61200090743
- Alfa Romeo / Fiat / Lancia: 60749249; 60755038; 60777846; 701655; 9939571; 9944736; 9950059
Specifications
- Reference: RCT1002
- Part Type: Alternator Rectifier
- Alternator Manufacturer: Bosch
- Type: IR/EF (K1)
- Outer Diameter: 114mm
- Current Strength From: 35A
- Number Of Diodes: 6
- Terminals: Push-On Terminals
- Supplied With: Diode Trio
- W-Terminal: Without W-Terminal
- Cross Reference: 1127320613
- Other Reference: 0120400/489; 0303406M
Features
- Bosch rectifier assembly to support alternator overhaul on compatible IR/EF (K1) alternators
- 114mm rectifier plate with 6 diode layout designed for matched Bosch housings
- 35A rating with diode trio included to restore correct rectification and charging stability
- Push-on terminals for compatible wiring layouts and straightforward alternator rebuild work
- Without W-terminal to match alternators that do not use a W output connection
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 rectifier outer diameter (114mm) and terminal layout before fitting
- Inspect stator condition, 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 check for abnormal AC ripple
- If you are unsure about alternator repairs, have the unit fitted and tested by a qualified auto electrician
