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Acura Alternator Rectifier Bridge

12 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 Copper Heat Sinks for 2001-2002 Acura MDXAlternator Rectifier Diode with Copper Heat Sinks for 2001-2002 Acura MDX
A-Premium®Part # APALR056
Alternator Rectifier Diode with Copper Heat Sinks for 2001-2002 Acura MDX
52 Reviews
$50.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Acura MDX: 2001 2002
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Acura
Quantity1
Item LocatedUnited States
ConditionNew
item #1018SQZL
Note
This item comes With Copper Heat Sinks.
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Alternator Rectifier for 2001-2005 Acura EL
A-Premium®Part # APALR030
Alternator Rectifier for 2001-2005 Acura EL
52 Reviews
$33.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Acura EL: 2001 2002 2003 2004 2005
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Acura
Quantity1
Item LocatedUnited States
Part interchange
A860X83370, 235297, IMR7579, RM-136
ConditionNew
item #1013GTZ8
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Alternator Rectifier Diode with Aluminum Heat Sinks 8-50A for 1996-1997 Acura SLX
A-Premium®Part # APALR008
Alternator Rectifier Diode with Aluminum Heat Sinks 8-50A for 1996-1997 Acura SLX
52 Reviews
$58.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Acura SLX: 1996 1997
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Acura
Quantity1
Item LocatedUnited States
ConditionNew
item #1015235U
Note
【Note-1】 14 Volt, 117mm OD, 8-50 A Diodes, M6 Battery Post (31°).
【Note-2】 This item comes with Aluminum Heat Sinks.
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Alternator Rectifier Diode for 1996-2004 Acura RL
A-Premium®Part # APALR005
Alternator Rectifier Diode for 1996-2004 Acura RL
52 Reviews
$28.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Acura
Quantity1
Item LocatedUnited States
ConditionNew
item #101880TX
Note
【Note-1】 12 Volt; 113mm OD; 8-50A Cell/Ampere Diodes; M8x47mm Battery Post.
【Note-2】 This item comes with Ground Screw Hole.
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Alternator Rectifier Diode for 1996-2004 Acura RL
A-Premium®Part # APALR143
Alternator Rectifier Diode for 1996-2004 Acura RL
52 Reviews
$27.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Acura RL: 1996 1997 1998 1999 2000 2001 2002 2003 2004
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Acura
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LACP
Note
This item is a 12 Volt, 8-50A press-fit diode with 113 mm OD and an M6 battery post (36°).
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Alternator Rectifier Diode with Aluminum Heat Sinks for 2009-2014 Acura TSX
A-Premium®Part # APALR009
Alternator Rectifier Diode with Aluminum Heat Sinks for 2009-2014 Acura TSX
52 Reviews
$57.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Acura TSX: 2009 2010 2011 2012 2013 2014
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Acura
Quantity1
Item LocatedUnited States
ConditionNew
item #101523ZH
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.
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Alternator Rectifier Diode with Aluminum Heat Sinks for 2004 Acura TL
A-Premium®Part # APALR126
Alternator Rectifier Diode with Aluminum Heat Sinks for 2004 Acura TL
52 Reviews
$37.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 2004 Acura TL
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Acura
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L7H5
Note
This item is a 12 Volt, 12–50A press-fit/avalanche diode with 117 mm OD and an M8×40 mm battery post.
Show less
Alternator Rectifier Diode for 1996-1998 Acura TL
A-Premium®Part # APALR005
Alternator Rectifier Diode for 1996-1998 Acura TL
52 Reviews
$28.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Acura
Quantity1
Item LocatedUnited States
ConditionNew
item #101882PP
Note
【Note-1】 12 Volt; 113mm OD; 8-50A Cell/Ampere Diodes; M8x47mm Battery Post.
【Note-2】 This item comes with Ground Screw Hole.
Show less
Alternator Rectifier Diode for 1996-2004 Acura TL
A-Premium®Part # APALR143
Alternator Rectifier Diode for 1996-2004 Acura TL
52 Reviews
$27.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Acura TL: 1996 1997 1998 1999 2000 2001 2002 2003 2004
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Acura
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L9D7
Note
This item is a 12 Volt, 8-50A press-fit diode with 113 mm OD and an M6 battery post (36°).
Show less
Alternator Rectifier Diode with Aluminum Heat Sinks for 2006-2008 Acura CSX
A-Premium®Part # APALR010
Alternator Rectifier Diode with Aluminum Heat Sinks for 2006-2008 Acura CSX
52 Reviews
$45.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Acura CSX: 2006 2007 2008
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Acura
Quantity1
Item LocatedUnited States
ConditionNew
item #1015232P
Note
【Note-1】 12 Volt, 117mm OD, 6-50A Avalanche Diodes, M6×34.5mm Battery Post.;
【Note-2】 This item comes with Aluminum Heat Sinks.
Show less
Alternator Rectifier Diode with Aluminum Heat Sinks for 2003-2004 Acura MDX
A-Premium®Part # APALR126
Alternator Rectifier Diode with Aluminum Heat Sinks for 2003-2004 Acura MDX
52 Reviews
$37.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Acura MDX: 2003 2004
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Acura
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L78G
Note
This item is a 12 Volt, 12–50A press-fit/avalanche diode with 117 mm OD and an M8×40 mm battery post.
Show less
Alternator Rectifier Diode for 1991-1995 Acura Legend
A-Premium®Part # APALR005
Alternator Rectifier Diode for 1991-1995 Acura Legend
52 Reviews
$28.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Acura
Quantity1
Item LocatedUnited States
ConditionNew
item #101884DC
Note
【Note-1】 12 Volt; 113mm OD; 8-50A Cell/Ampere Diodes; M8x47mm Battery Post.
【Note-2】 This item comes with Ground Screw Hole.
Show less

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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