Alternator Rectifier 120mm 50A 6 Diode Avalanche Bosch Mercedes Actros Unimog Scania Cummins Bell B40 RCT1050
Alternator Rectifier 120mm 50A 6 Diode Avalanche Bosch Mercedes Actros Unimog Scania Cummins Bell B40 RCT1050
Vehicle Compatibility
Complete alternator rectifier for Bosch alternator applications where the alternator uses a matching 120mm outer diameter rectifier plate and the same diode configuration. Listed for heavy duty alternator rebuild work on Mercedes-Benz Actros and Unimog, and also referenced for Scania as well as equipment and industrial applications including Bell B40 and Cummins where the alternator/rectifier reference matches. Specified as Bosch IR/IF type with 6 avalanche diodes and a 50A rating. Confirm by alternator label, rectifier OD and OE reference before ordering.
- Mercedes-Benz: Actros; Unimog (applications matching OE 0011543616)
- Scania: Alternator applications where the Bosch rectifier specification matches
- Bell: B40 (alternator applications where the Bosch rectifier specification matches)
- Cummins: Alternator applications where the Bosch rectifier specification matches
- Fiat Allis: Alternator applications where the Bosch rectifier specification matches
- VAG (cross reference): 2TB903357A
Specifications
- Reference: RCT1050
- Part Type: Alternator Rectifier
- Manufacturer: Bosch
- Type: IR/IF (Internal Regulator / Internal Fan)
- Outer Diameter: 120mm
- Current Strength From: 50A
- Number Of Diodes: 6
- Diode Type: Avalanche Diode
- Application Note: Listed as NCB1/NCB2 100A IR/IF rectifier where alternator build matches
OE Numbers
- Mercedes-Benz: 0011543616
- VAG: 2TB903357A
Features
- 120mm Bosch rectifier plate designed for matched alternator housings used on Actros, Unimog and related heavy duty applications
- 50A 6-diode avalanche diode configuration for stable rectification and improved resilience under load
- Bosch IR/IF specification for compatible alternator builds (NCB1/NCB2 where reference matches)
- Supports alternator overhaul where failed diodes cause low charge, battery drain, or excessive AC ripple
- Best practice is to confirm rectifier diameter and OE reference 0011543616 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 batteries before alternator removal or rectifier replacement on heavy duty vehicles
- Confirm rectifier outer diameter (120mm) and diode layout (6 diodes) 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
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Vehicle Compatibility
Complete alternator rectifier for Bosch alternator applications where the alternator uses a matching 120mm outer diameter rectifier plate and the same diode configuration. Listed for heavy duty alternator rebuild work on Mercedes-Benz Actros and Unimog, and also referenced for Scania as well as equipment and industrial applications including Bell B40 and Cummins where the alternator/rectifier reference matches. Specified as Bosch IR/IF type with 6 avalanche diodes and a 50A rating. Confirm by alternator label, rectifier OD and OE reference before ordering.
- Mercedes-Benz: Actros; Unimog (applications matching OE 0011543616)
- Scania: Alternator applications where the Bosch rectifier specification matches
- Bell: B40 (alternator applications where the Bosch rectifier specification matches)
- Cummins: Alternator applications where the Bosch rectifier specification matches
- Fiat Allis: Alternator applications where the Bosch rectifier specification matches
- VAG (cross reference): 2TB903357A
Specifications
- Reference: RCT1050
- Part Type: Alternator Rectifier
- Manufacturer: Bosch
- Type: IR/IF (Internal Regulator / Internal Fan)
- Outer Diameter: 120mm
- Current Strength From: 50A
- Number Of Diodes: 6
- Diode Type: Avalanche Diode
- Application Note: Listed as NCB1/NCB2 100A IR/IF rectifier where alternator build matches
OE Numbers
- Mercedes-Benz: 0011543616
- VAG: 2TB903357A
Features
- 120mm Bosch rectifier plate designed for matched alternator housings used on Actros, Unimog and related heavy duty applications
- 50A 6-diode avalanche diode configuration for stable rectification and improved resilience under load
- Bosch IR/IF specification for compatible alternator builds (NCB1/NCB2 where reference matches)
- Supports alternator overhaul where failed diodes cause low charge, battery drain, or excessive AC ripple
- Best practice is to confirm rectifier diameter and OE reference 0011543616 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 batteries before alternator removal or rectifier replacement on heavy duty vehicles
- Confirm rectifier outer diameter (120mm) and diode layout (6 diodes) 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
