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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.

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Alternator Rectifier Diode with Heat Sinks for 2001-2006 BMW X5Alternator Rectifier Diode with Heat Sinks for 2001-2006 BMW X5
A-Premium®Part # APALR085
Alternator Rectifier Diode with Heat Sinks for 2001-2006 BMW X5
52 Reviews
$28.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits BMW X5: 2001 2002 2003 2004 2005 2006
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L8NY
Note
【Note-1】 This item is a 12 Volt, 6–50A press-fit/avalanche diode with 129 mm OD, an M8×22 mm battery post (L), and an M8×50 mm battery post (R).
【Note-2】 This item comes with 129 mm negative heat sink.
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Alternator Rectifier Diode with Heat Sinks for 2005-2006 Chevrolet Avalanche 1500
A-Premium®Part # APALR085
Alternator Rectifier Diode with Heat Sinks for 2005-2006 Chevrolet Avalanche 1500
52 Reviews
$28.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chevrolet Avalanche 1500: 2005 2006
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L7H4
Note
【Note-1】 This item is a 12 Volt, 6–50A press-fit/avalanche diode with 129 mm OD, an M8×22 mm battery post (L), and an M8×50 mm battery post (R).
【Note-2】 This item comes with 129 mm negative heat sink.
Show less
Alternator Rectifier Diode with Heat Sinks for 2005-2006 Chevrolet Suburban 1500
A-Premium®Part # APALR085
Alternator Rectifier Diode with Heat Sinks for 2005-2006 Chevrolet Suburban 1500
52 Reviews
$28.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chevrolet Suburban 1500: 2005 2006
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L7YA
Note
【Note-1】 This item is a 12 Volt, 6–50A press-fit/avalanche diode with 129 mm OD, an M8×22 mm battery post (L), and an M8×50 mm battery post (R).
【Note-2】 This item comes with 129 mm negative heat sink.
Show less
Alternator Rectifier Diode with Heat Sinks for 2003-2005 Chevrolet Monte Carlo
A-Premium®Part # APALR085
Alternator Rectifier Diode with Heat Sinks for 2003-2005 Chevrolet Monte Carlo
52 Reviews
$28.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chevrolet Monte Carlo: 2003 2004 2005
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L6S5
Note
【Note-1】 This item is a 12 Volt, 6–50A press-fit/avalanche diode with 129 mm OD, an M8×22 mm battery post (L), and an M8×50 mm battery post (R).
【Note-2】 This item comes with 129 mm negative heat sink.
Show less
Alternator Rectifier Diode with Aluminum Heat Sinks for 2006-2011 Chevrolet Impala
A-Premium®Part # APALR130
Alternator Rectifier Diode with Aluminum Heat Sinks for 2006-2011 Chevrolet Impala
52 Reviews
$39.99
Low stock: Only 2 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chevrolet Impala: 2006 2007 2008 2009 2010 2011
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015HL1A
Note
This item is a 12 Volt, 12–50A press-fit/avalanche diode with 117 mm OD and an M8×49 mm battery post.
Show less
Alternator Rectifier Diode with Aluminum Heat Sinks for 2008-2009 Saturn Aura
A-Premium®Part # APALR130
Alternator Rectifier Diode with Aluminum Heat Sinks for 2008-2009 Saturn Aura
52 Reviews
$39.99
Low stock: Only 2 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Saturn Aura: 2008 2009
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015HQ71
Note
This item is a 12 Volt, 12–50A press-fit/avalanche diode with 117 mm OD and an M8×49 mm battery post.
Show less
Alternator Rectifier Diode with Aluminum Heat Sinks for 2006-2011 Buick Lucerne
A-Premium®Part # APALR130
Alternator Rectifier Diode with Aluminum Heat Sinks for 2006-2011 Buick Lucerne
52 Reviews
$39.99
Low stock: Only 2 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Buick Lucerne: 2006 2007 2008 2009 2010 2011
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015HPVU
Note
This item is a 12 Volt, 12–50A press-fit/avalanche diode with 117 mm OD and an M8×49 mm battery post.
Show less
Alternator Rectifier Diode with Aluminum Heat Sinks for 2009-2016 Hyundai Genesis
A-Premium®Part # APALR130
Alternator Rectifier Diode with Aluminum Heat Sinks for 2009-2016 Hyundai Genesis
52 Reviews
$39.99
Low stock: Only 2 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Hyundai Genesis: 2009 2010 2011 2012 2013 2014 2015 2016
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015HQ5L
Note
This item is a 12 Volt, 12–50A press-fit/avalanche diode with 117 mm OD and an M8×49 mm battery post.
Show less
Alternator Rectifier Diode with Aluminum Heat Sinks for 2006-2007 Chevrolet Monte Carlo
A-Premium®Part # APALR130
Alternator Rectifier Diode with Aluminum Heat Sinks for 2006-2007 Chevrolet Monte Carlo
52 Reviews
$39.99
Low stock: Only 2 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chevrolet Monte Carlo: 2006 2007
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015HPTT
Note
This item is a 12 Volt, 12–50A press-fit/avalanche diode with 117 mm OD and an M8×49 mm battery post.
Show less
Alternator Rectifier Diode with Heat Sinks for 2001-2006 BMW 330xi
A-Premium®Part # APALR085
Alternator Rectifier Diode with Heat Sinks for 2001-2006 BMW 330xi
52 Reviews
$28.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits BMW 330xi: 2001 2002 2003 2004 2005 2006
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L8E7
Note
【Note-1】 This item is a 12 Volt, 6–50A press-fit/avalanche diode with 129 mm OD, an M8×22 mm battery post (L), and an M8×50 mm battery post (R).
【Note-2】 This item comes with 129 mm negative heat sink.
Show less
Alternator Rectifier Diode with Heat Sinks for 2001-2003 BMW 525i
A-Premium®Part # APALR085
Alternator Rectifier Diode with Heat Sinks for 2001-2003 BMW 525i
52 Reviews
$28.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits BMW 525i: 2001 2002 2003
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L7PL
Note
【Note-1】 This item is a 12 Volt, 6–50A press-fit/avalanche diode with 129 mm OD, an M8×22 mm battery post (L), and an M8×50 mm battery post (R).
【Note-2】 This item comes with 129 mm negative heat sink.
Show less
Alternator Rectifier Diode with Heat Sinks for 2005-2007 GMC Sierra 1500
A-Premium®Part # APALR085
Alternator Rectifier Diode with Heat Sinks for 2005-2007 GMC Sierra 1500
52 Reviews
$28.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits GMC Sierra 1500: 2005 2006 2007
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L8K8
Note
【Note-1】 This item is a 12 Volt, 6–50A press-fit/avalanche diode with 129 mm OD, an M8×22 mm battery post (L), and an M8×50 mm battery post (R).
【Note-2】 This item comes with 129 mm negative heat sink.
Show less
Alternator Rectifier Diode with Heat Sinks for 2001-2003 BMW 530i
A-Premium®Part # APALR085
Alternator Rectifier Diode with Heat Sinks for 2001-2003 BMW 530i
52 Reviews
$28.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits BMW 530i: 2001 2002 2003
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L7W8
Note
【Note-1】 This item is a 12 Volt, 6–50A press-fit/avalanche diode with 129 mm OD, an M8×22 mm battery post (L), and an M8×50 mm battery post (R).
【Note-2】 This item comes with 129 mm negative heat sink.
Show less
Alternator Rectifier Diode with Heat Sinks for 2001-2006 BMW 330Ci
A-Premium®Part # APALR085
Alternator Rectifier Diode with Heat Sinks for 2001-2006 BMW 330Ci
52 Reviews
$28.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits BMW 330Ci: 2001 2002 2003 2004 2005 2006
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LAQA
Note
【Note-1】 This item is a 12 Volt, 6–50A press-fit/avalanche diode with 129 mm OD, an M8×22 mm battery post (L), and an M8×50 mm battery post (R).
【Note-2】 This item comes with 129 mm negative heat sink.
Show less
Alternator Rectifier Diode with Heat Sinks for 2005-2006 Cadillac Escalade
A-Premium®Part # APALR085
Alternator Rectifier Diode with Heat Sinks for 2005-2006 Cadillac Escalade
52 Reviews
$28.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Cadillac Escalade: 2005 2006
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L8GX
Note
【Note-1】 This item is a 12 Volt, 6–50A press-fit/avalanche diode with 129 mm OD, an M8×22 mm battery post (L), and an M8×50 mm battery post (R).
【Note-2】 This item comes with 129 mm negative heat sink.
Show less
Alternator Rectifier Diode with Heat Sinks for 2001-2005 BMW 325xi
A-Premium®Part # APALR085
Alternator Rectifier Diode with Heat Sinks for 2001-2005 BMW 325xi
52 Reviews
$28.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits BMW 325xi: 2001 2002 2003 2004 2005
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L6TS
Note
【Note-1】 This item is a 12 Volt, 6–50A press-fit/avalanche diode with 129 mm OD, an M8×22 mm battery post (L), and an M8×50 mm battery post (R).
【Note-2】 This item comes with 129 mm negative heat sink.
Show less
Alternator Rectifier Diode with Heat Sinks for 2007 GMC Sierra 1500 Classic
A-Premium®Part # APALR085
Alternator Rectifier Diode with Heat Sinks for 2007 GMC Sierra 1500 Classic
52 Reviews
$28.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 2007 GMC Sierra 1500 Classic
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LAS8
Note
【Note-1】 This item is a 12 Volt, 6–50A press-fit/avalanche diode with 129 mm OD, an M8×22 mm battery post (L), and an M8×50 mm battery post (R).
【Note-2】 This item comes with 129 mm negative heat sink.
Show less
Alternator Rectifier Diode with Heat Sinks for 2007 Chevrolet Silverado 1500 Classic
A-Premium®Part # APALR085
Alternator Rectifier Diode with Heat Sinks for 2007 Chevrolet Silverado 1500 Classic
52 Reviews
$28.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 2007 Chevrolet Silverado 1500 Classic
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LCTA
Note
【Note-1】 This item is a 12 Volt, 6–50A press-fit/avalanche diode with 129 mm OD, an M8×22 mm battery post (L), and an M8×50 mm battery post (R).
【Note-2】 This item comes with 129 mm negative heat sink.
Show less
Alternator Rectifier Diode with Heat Sinks for 2005-2006 GMC Yukon XL 1500
A-Premium®Part # APALR085
Alternator Rectifier Diode with Heat Sinks for 2005-2006 GMC Yukon XL 1500
52 Reviews
$28.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits GMC Yukon XL 1500: 2005 2006
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L6YR
Note
【Note-1】 This item is a 12 Volt, 6–50A press-fit/avalanche diode with 129 mm OD, an M8×22 mm battery post (L), and an M8×50 mm battery post (R).
【Note-2】 This item comes with 129 mm negative heat sink.
Show less
Alternator Rectifier Diode with Aluminum Heat Sinks for 2011-2012 2014-2018 Kia Sedona
A-Premium®Part # APALR130
Alternator Rectifier Diode with Aluminum Heat Sinks for 2011-2012 2014-2018 Kia Sedona
52 Reviews
$39.99
Low stock: Only 2 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Kia Sedona: 2011 2012 2014 2015 2016 2017 2018
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015HR46
Note
This item is a 12 Volt, 12–50A press-fit/avalanche diode with 117 mm OD and an M8×49 mm battery post.
Show less
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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