24/7 Customer service
To make aftermarket auto parts an afterthought.
Add your vehicle
Address
Login
Cart
Item
$0.00

Popular vehicles

Alternator Rectifier Bridge

1376 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.

  • All filters
  • Sort By
  • Year
  • Make
  • Model
  • Price
  • Brand
  • Warranty
Alternator Rectifier Diode with Trio for 2002 2005 Mercedes-Benz ML500Alternator Rectifier Diode with Trio for 2002 2005 Mercedes-Benz ML500
A-Premium®Part # APALR109
Alternator Rectifier Diode with Trio for 2002 2005 Mercedes-Benz ML500
52 Reviews
$57.99
Low stock: Only 2 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mercedes-Benz ML500: 2002 2005
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #10183XS0
Note
【Note-1】 12 Volt, 122mm OD, 12-50A Avalanche Diodes, M8×30mm Battery Post.
【Note-2】 This item comes with Trio.
Show less
Alternator Rectifier Diode with Trio for 2000-2003 Mercedes-Benz ML55 AMG
A-Premium®Part # APALR109
Alternator Rectifier Diode with Trio for 2000-2003 Mercedes-Benz ML55 AMG
52 Reviews
$57.99
Low stock: Only 2 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mercedes-Benz ML55 AMG: 2000 2001 2002 2003
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #10183XEV
Note
【Note-1】 12 Volt, 122mm OD, 12-50A Avalanche Diodes, M8×30mm Battery Post.
【Note-2】 This item comes with Trio.
Show less
Alternator Rectifier Diode with Trio for 1998-2000 Mercedes-Benz C43 AMG
A-Premium®Part # APALR109
Alternator Rectifier Diode with Trio for 1998-2000 Mercedes-Benz C43 AMG
52 Reviews
$57.99
Low stock: Only 2 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mercedes-Benz C43 AMG: 1998 1999 2000
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #10183Y6Z
Note
【Note-1】 12 Volt, 122mm OD, 12-50A Avalanche Diodes, M8×30mm Battery Post.
【Note-2】 This item comes with Trio.
Show less
Alternator Rectifier Diode with Aluminum Heat Sinks for 2002-2004 Chrysler 300M
A-Premium®Part # APALR002
Alternator Rectifier Diode with Aluminum Heat Sinks for 2002-2004 Chrysler 300M
52 Reviews
$42.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chrysler 300M: 2002 2003 2004
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #10183XL3
Note
【Note-1】 14 Volt, 117mm OD, 12-35A Avalanche Diodes, M8×49mm Battery Post.
【Note-2】 This item comes with Aluminum Heat Sinks.
Show less
Alternator Rectifier Diode for 2009-2013 Mazda 6
A-Premium®Part # APALR052
Alternator Rectifier Diode for 2009-2013 Mazda 6
52 Reviews
$43.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mazda 6: 2009 2010 2011 2012 2013
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #10183ZD6
Note
12 Volt, 128mm OD, 12-50A General Diodes
Show less
Alternator Rectifier Diode with Trio for 1986-1992 Volkswagen Jetta
A-Premium®Part # APALR178
Alternator Rectifier Diode with Trio for 1986-1992 Volkswagen Jetta
52 Reviews
$26.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Volkswagen Jetta: 1986 1987 1988 1989 1990 1991 1992
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101841P8
Note
14 Volt, 114mm OD, 6-35A Avalanche Diodes, M8×52.5mm Battery Post, M5×43.7mm Trio Post, with Trio.
Show less
Alternator Rectifier Diode with Trio for 1984-1985 Audi 5000
A-Premium®Part # APALR053
Alternator Rectifier Diode with Trio for 1984-1985 Audi 5000
52 Reviews
$30.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Audi 5000: 1984 1985
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #10183Y57
Note
【Note-1】 12 Volt, 8-35 Ampere Diodes, M8×52mm Battery Post.
【Note-2】 This item comes with Trio.
Show less
Alternator Rectifier Diode with Trio for 1985 Volkswagen Cabriolet
A-Premium®Part # APALR053
Alternator Rectifier Diode with Trio for 1985 Volkswagen Cabriolet
52 Reviews
$30.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 1985 Volkswagen Cabriolet
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1018422W
Note
【Note-1】 12 Volt, 8-35 Ampere Diodes, M8×52mm Battery Post.
【Note-2】 This item comes with Trio.
Show less
Alternator Rectifier Diode for 1981-1982 Mazda GLC
A-Premium®Part # APALR123
Alternator Rectifier Diode for 1981-1982 Mazda GLC
52 Reviews
$20.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mazda GLC: 1981 1982
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #10183Y42
Note
【Note-1】 12 Volt, Mounting Length: 85mm, 6-35A General Diodes.
【Note-2】 This item comes with Copper Heat Sinks & Trio.
Show less
Alternator Rectifier Diode for 2003-2006 Subaru Baja
A-Premium®Part # APALR015
Alternator Rectifier Diode for 2003-2006 Subaru Baja
52 Reviews
$57.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Subaru Baja: 2003 2004 2005 2006
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101521PW
Note
【Note-1】 14 Volt, 8-35A Diodes, M5×44mm Battery Post.
【Note-2】 This item comes without Capacitor and Trio.
Show less
Alternator Rectifier Diodes for 2001-2005 Dodge Stratus
A-Premium®Part # APALR012
Alternator Rectifier Diodes for 2001-2005 Dodge Stratus
52 Reviews
$55.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Dodge Stratus: 2001 2002 2003 2004 2005
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015238W
Note
8-35A Diodes, M8×59.5mm Battery Post.
Show less
Alternator Rectifier Diode for 1999-2000 Volvo S70
A-Premium®Part # APALR024
Alternator Rectifier Diode for 1999-2000 Volvo S70
52 Reviews
$51.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Volvo S70: 1999 2000
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101523U8
Note
14 Volt, 120mm OD, 6-50A Avalanche Diodes, M8×22mm Battery Post(L), M8×32mm Battery Post(R).
Show less
Alternator Rectifier Diode for 2002-2004 Mercedes-Benz C32 AMG
A-Premium®Part # APALR024
Alternator Rectifier Diode for 2002-2004 Mercedes-Benz C32 AMG
52 Reviews
$51.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mercedes-Benz C32 AMG: 2002 2003 2004
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101524QV
Note
14 Volt, 120mm OD, 6-50A Avalanche Diodes, M8×22mm Battery Post(L), M8×32mm Battery Post(R).
Show less
Alternator Rectifier Diode for 1991-1992 Cadillac Fleetwood
A-Premium®Part # APALR043
Alternator Rectifier Diode for 1991-1992 Cadillac Fleetwood
52 Reviews
$32.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Cadillac Fleetwood: 1991 1992
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101522N8
Note
12 Volt, 118mm OD, Diodes: 6-50A Jumbo Avalanche Button.
Show less
Alternator Rectifier Diode for 1998 Chevrolet Venture
A-Premium®Part # APALR043
Alternator Rectifier Diode for 1998 Chevrolet Venture
52 Reviews
$32.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 1998 Chevrolet Venture
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101522YG
Note
12 Volt, 118mm OD, Diodes: 6-50A Jumbo Avalanche Button.
Show less
Alternator Rectifier Diode with Aluminum Heat Sinks for 2008-2012 Honda Accord
A-Premium®Part # APALR009
Alternator Rectifier Diode with Aluminum Heat Sinks for 2008-2012 Honda Accord
52 Reviews
$57.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Honda Accord: 2008 2009 2010 2011 2012
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101523AE
Note
【Note-1】 12 Volt, 117mm OD, 12-35A Avalanche Diodes, M6×34.5mm Battery Post.;
【Note-2】 This item comes with Aluminum Heat Sinks.
Show less
Alternator Rectifier Diode for 1996-1997 INFINITI I30
A-Premium®Part # APALR028
Alternator Rectifier Diode for 1996-1997 INFINITI I30
52 Reviews
$43.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits INFINITI I30: 1996 1997
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015215G
Note
【Note-1】 24 Volt, 119mm OD, 8-50A Avalanche Diodes, M6×20.3mm Battery Post.
【Note-2】 This item comes with M5×31.6mm Mounting Bolt.
Show less
Alternator Rectifier Diode with Insulator for 2001-2007 Sterling Truck Acterra 6500
A-Premium®Part # APALR127
Alternator Rectifier Diode with Insulator for 2001-2007 Sterling Truck Acterra 6500
52 Reviews
$34.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Sterling Truck Acterra 6500: 2001 2002 2003 2004 2005 2006 2007
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LCUK
Note
This item is a 12 Volt, 6–50A press-fit/avalanche diode with 116 mm OD and a 5/16''×45 mm battery post.
Show less
Alternator Rectifier Diode with Insulator for 1999 Sterling Truck A9522
A-Premium®Part # APALR127
Alternator Rectifier Diode with Insulator for 1999 Sterling Truck A9522
52 Reviews
$34.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 1999 Sterling Truck A9522
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LCL0
Note
This item is a 12 Volt, 6–50A press-fit/avalanche diode with 116 mm OD and a 5/16''×45 mm battery post.
Show less
Alternator Rectifier Diode with Insulator for 2000-2004 Freightliner FL50
A-Premium®Part # APALR127
Alternator Rectifier Diode with Insulator for 2000-2004 Freightliner FL50
52 Reviews
$34.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Freightliner FL50: 2000 2001 2002 2003 2004
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LD23
Note
This item is a 12 Volt, 6–50A press-fit/avalanche diode with 116 mm OD and a 5/16''×45 mm battery post.
Show less
1...3839404142...69
Page 40 of 69

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.

Related Categories

Alternator Voltage Regulator
Alternator Voltage Regulator
Alternator
Alternator
Fuel Pump
Fuel Pump
Water Pump
Water Pump