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Oldsmobile Alternator Rectifier Bridge

36 items

An alternator rectifier bridge uses diodes to convert alternating current into direct current for the vehicle's electrical system. Choose the bridge for the alternator design, comparing assembly layout, connections and mounting. It is a service component within the alternator rather than a complete alternator replacement.

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Alternator Rectifier Diode for 1983-1984 1988 Oldsmobile Cutlass CalaisAlternator Rectifier Diode for 1983-1984 1988 Oldsmobile Cutlass Calais
A-Premium®Part # APALR176
Alternator Rectifier Diode for 1983-1984 1988 Oldsmobile Cutlass Calais
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Oldsmobile Cutlass Calais: 1983 1984 1988
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Oldsmobile
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LC4P
Note
【Note-1】 This item is a 12 Volt, 6–50A button diode with 80 mm OD.
【Note-2】 For 1983-1988 Oldsmobile Delta 88, this item fits for the Sedan model only, does not fit for the Coupe model.
Show less
Alternator Rectifier Diode for 1984 Oldsmobile Omega
A-Premium®Part # APALR175
Alternator Rectifier Diode for 1984 Oldsmobile Omega
52 Reviews
$20.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Oldsmobile
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LAH1
Note
【Note-1】 This item is a 12 Volt, 6–50A button diode with 94.9 mm OD.
【Note-2】 For 1984-1986 Oldsmobile Delta 88, this item fits for the Sedan model only, does not fit for the Coupe model.
Show less
Alternator Rectifier Diode for 1984-1986 Oldsmobile Cutlass Ciera
A-Premium®Part # APALR175
Alternator Rectifier Diode for 1984-1986 Oldsmobile Cutlass Ciera
52 Reviews
$20.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Oldsmobile Cutlass Ciera: 1984 1985 1986
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Oldsmobile
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LC5A
Note
【Note-1】 This item is a 12 Volt, 6–50A button diode with 94.9 mm OD.
【Note-2】 For 1984-1986 Oldsmobile Delta 88, this item fits for the Sedan model only, does not fit for the Coupe model.
Show less
Alternator Rectifier Diode for 1985-1986 Oldsmobile Cutlass
A-Premium®Part # APALR175
Alternator Rectifier Diode for 1985-1986 Oldsmobile Cutlass
52 Reviews
$20.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Oldsmobile Cutlass: 1985 1986
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Oldsmobile
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L880
Note
【Note-1】 This item is a 12 Volt, 6–50A button diode with 94.9 mm OD.
【Note-2】 For 1984-1986 Oldsmobile Delta 88, this item fits for the Sedan model only, does not fit for the Coupe model.
Show less
Alternator Rectifier Diode for 1983-1988 Oldsmobile Custom Cruiser
A-Premium®Part # APALR176
Alternator Rectifier Diode for 1983-1988 Oldsmobile Custom Cruiser
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Oldsmobile Custom Cruiser: 1983 1984 1985 1986 1987 1988
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Oldsmobile
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LCRG
Note
【Note-1】 This item is a 12 Volt, 6–50A button diode with 80 mm OD.
【Note-2】 For 1983-1988 Oldsmobile Delta 88, this item fits for the Sedan model only, does not fit for the Coupe model.
Show less
Alternator Rectifier Diode for 1984-1986 Oldsmobile Delta 88
A-Premium®Part # APALR175
Alternator Rectifier Diode for 1984-1986 Oldsmobile Delta 88
52 Reviews
$20.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Oldsmobile Delta 88: 1984 1985 1986
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Oldsmobile
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L909
Note
【Note-1】 This item is a 12 Volt, 6–50A button diode with 94.9 mm OD.
【Note-2】 For 1984-1986 Oldsmobile Delta 88, this item fits for the Sedan model only, does not fit for the Coupe model.
Show less
Alternator Rectifier Diode for 1984-1986 Oldsmobile Custom Cruiser
A-Premium®Part # APALR175
Alternator Rectifier Diode for 1984-1986 Oldsmobile Custom Cruiser
52 Reviews
$20.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Oldsmobile Custom Cruiser: 1984 1985 1986
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Oldsmobile
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L6TN
Note
【Note-1】 This item is a 12 Volt, 6–50A button diode with 94.9 mm OD.
【Note-2】 For 1984-1986 Oldsmobile Delta 88, this item fits for the Sedan model only, does not fit for the Coupe model.
Show less
Alternator Rectifier Diode for 1984-1985 Oldsmobile Cutlass Supreme
A-Premium®Part # APALR175
Alternator Rectifier Diode for 1984-1985 Oldsmobile Cutlass Supreme
52 Reviews
$20.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Oldsmobile
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L6T0
Note
【Note-1】 This item is a 12 Volt, 6–50A button diode with 94.9 mm OD.
【Note-2】 For 1984-1986 Oldsmobile Delta 88, this item fits for the Sedan model only, does not fit for the Coupe model.
Show less
Alternator Rectifier Diode for 1983-1985 1987-1988 Oldsmobile Cutlass Supreme
A-Premium®Part # APALR176
Alternator Rectifier Diode for 1983-1985 1987-1988 Oldsmobile Cutlass Supreme
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Oldsmobile Cutlass Supreme: 1983 1984 1985 1987 1988
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Oldsmobile
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LA1G
Note
【Note-1】 This item is a 12 Volt, 6–50A button diode with 80 mm OD.
【Note-2】 For 1983-1988 Oldsmobile Delta 88, this item fits for the Sedan model only, does not fit for the Coupe model.
Show less
Alternator Rectifier Diode for 1984-1986 Oldsmobile Firenza
A-Premium®Part # APALR175
Alternator Rectifier Diode for 1984-1986 Oldsmobile Firenza
52 Reviews
$20.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Oldsmobile Firenza: 1984 1985 1986
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Oldsmobile
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L800
Note
【Note-1】 This item is a 12 Volt, 6–50A button diode with 94.9 mm OD.
【Note-2】 For 1984-1986 Oldsmobile Delta 88, this item fits for the Sedan model only, does not fit for the Coupe model.
Show less
Alternator Rectifier Diode for 1983-1988 Oldsmobile Toronado
A-Premium®Part # APALR176
Alternator Rectifier Diode for 1983-1988 Oldsmobile Toronado
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Oldsmobile Toronado: 1983 1984 1985 1986 1987 1988
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Oldsmobile
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LA69
Note
【Note-1】 This item is a 12 Volt, 6–50A button diode with 80 mm OD.
【Note-2】 For 1983-1988 Oldsmobile Delta 88, this item fits for the Sedan model only, does not fit for the Coupe model.
Show less
Alternator Rectifier Diode for 1985-1987 Oldsmobile Calais
A-Premium®Part # APALR176
Alternator Rectifier Diode for 1985-1987 Oldsmobile Calais
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Oldsmobile Calais: 1985 1986 1987
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Oldsmobile
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LC90
Note
【Note-1】 This item is a 12 Volt, 6–50A button diode with 80 mm OD.
【Note-2】 For 1983-1988 Oldsmobile Delta 88, this item fits for the Sedan model only, does not fit for the Coupe model.
Show less
Alternator Rectifier Diode for 1983-1988 Oldsmobile Firenza
A-Premium®Part # APALR176
Alternator Rectifier Diode for 1983-1988 Oldsmobile Firenza
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Oldsmobile Firenza: 1983 1984 1985 1986 1987 1988
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Oldsmobile
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LCVD
Note
【Note-1】 This item is a 12 Volt, 6–50A button diode with 80 mm OD.
【Note-2】 For 1983-1988 Oldsmobile Delta 88, this item fits for the Sedan model only, does not fit for the Coupe model.
Show less
Alternator Rectifier Diode for 1983-1988 Oldsmobile Delta 88
A-Premium®Part # APALR176
Alternator Rectifier Diode for 1983-1988 Oldsmobile Delta 88
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Oldsmobile Delta 88: 1983 1984 1985 1986 1987 1988
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Oldsmobile
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LAH8
Note
【Note-1】 This item is a 12 Volt, 6–50A button diode with 80 mm OD.
【Note-2】 For 1983-1988 Oldsmobile Delta 88, this item fits for the Sedan model only, does not fit for the Coupe model.
Show less
Alternator Rectifier Diode for 1983-1988 Oldsmobile 98
A-Premium®Part # APALR176
Alternator Rectifier Diode for 1983-1988 Oldsmobile 98
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Oldsmobile 98: 1983 1984 1985 1986 1987 1988
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Oldsmobile
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L7RZ
Note
【Note-1】 This item is a 12 Volt, 6–50A button diode with 80 mm OD.
【Note-2】 For 1983-1988 Oldsmobile Delta 88, this item fits for the Sedan model only, does not fit for the Coupe model.
Show less
Alternator Rectifier Diode for 1983-1984 Oldsmobile Omega
A-Premium®Part # APALR176
Alternator Rectifier Diode for 1983-1984 Oldsmobile Omega
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Oldsmobile
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L9CT
Note
【Note-1】 This item is a 12 Volt, 6–50A button diode with 80 mm OD.
【Note-2】 For 1983-1988 Oldsmobile Delta 88, this item fits for the Sedan model only, does not fit for the Coupe model.
Show less
12
Page 2 of 2

Alternator Rectifier Bridges

An alternator rectifier bridge uses diodes to convert the alternator's alternating current into direct current for the vehicle's electrical system. It is one part of the alternator, rather than a complete replacement alternator.

A-Premium offers rectifier assemblies for selected alternators. Their size, connections and internal diode configuration can differ, so select a bridge for the specific alternator being repaired.

Choosing An Alternator Diode Bridge

Identify the alternator and compare the replacement's mounting shape, outside diameter and electrical connections. The vehicle application helps narrow the choices, but the rectifier must also match the alternator installed in the vehicle.

A charging warning or a weak battery does not identify a failed rectifier by itself. The battery, drive belt, wiring and voltage regulator are also part of the charging-system diagnosis.

Frequently Asked Questions (FAQ)

What is the difference between a rectifier and a voltage regulator?

The rectifier converts alternating current to direct current; the regulator controls alternator voltage for the operating conditions. They perform different jobs even when both are mounted on the alternator.

Can a faulty alternator diode drain the battery when parked?

A faulty diode can contribute to battery discharge while the vehicle is off. Other electrical loads and battery problems can also cause a drain, so the charging system needs a proper diagnosis.

Why does the battery-post size matter?

The post connects the charging output to the vehicle's electrical cable. Its diameter and length must suit the connection and available space; an M6 post and an M8 post are different mounting specifications.

What do the heat sinks on a rectifier do?

A heat sink helps transfer heat away from the electronic components. Some A-Premium bridge listings identify aluminum heat sinks, but the design and supplied parts vary by product.

Can I disconnect the battery while the engine runs to test charging?

Keep the battery connected while the alternator is operating. HELLA warns that disconnecting the battery or connections with the engine running can create voltage spikes and damage components; use the specified diagnostic procedure instead.

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