This page lists 50 electrical parts for the 2000 Buick Regal, across 14 part types, covering both the 3.8L V6 and the 3.8L V6 Supercharged. Every part shows its brand, manufacturer part number and fitment notes.
The electrical system on the 2000 Buick Regal covers charging, starting and the sensors and modules the vehicle relies on, from alternator and starter to oxygen sensors. The largest groups are Horn (16 parts), Alternator / Generator (10 parts) and Battery (5 parts). The other 11 part types cover the remaining 19 parts.
The 2000 Buick Regal was sold with both the 3.8L V6 and the 3.8L V6 Supercharged. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2000 Buick Regal electrical parts are FIAMM (11 parts), ACDELCO (6 parts) and GM GENUINE (6 parts), plus 14 more brands. Quality grades include Standard Replacement, Accessory Replacement and New.
8 parts on this 2000 Buick Regal page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including ACDELCO 3351232 (Alternator / Generator) and DEKA 9A78DT (Battery). Click any part number to see every vehicle that part fits.
Alternator / Generator
New
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular Fits: 3.8L V6 Supercharged | 3351232 | 🇺🇸 US 🇨🇦 CA | Gold | View on Amazon |
| WAI GLOBAL Popular Fits: 3.8L V6 Supercharged | 8234N6G2 | 🇺🇸 US 🇨🇦 CA | 102 Amps | View on Amazon |
| PURE ENERGY Fits: 3.8L V6 Supercharged | 8234605N | 🇺🇸 US 🇨🇦 CA | 102 Amps | View on Amazon |
| REMY Fits: 3.8L V6 Supercharged | 91531 | 🇺🇸 US 🇨🇦 CA | 110 Amps | View on Amazon |
| TERREPOWER Fits: 3.8L V6 Supercharged | N82345 | 🇺🇸 US 🇨🇦 CA | 110 Amps | View on Amazon |
Remanufactured
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Fits: 3.8L V6 Supercharged | 3342478A | 🇺🇸 US 🇨🇦 CA | GoldRemanufactured | View on Amazon |
| FVP Fits: 3.8L V6 Supercharged | 8234605 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| PURE ENERGY Fits: 3.8L V6 Supercharged | 8234605 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| REMY Fits: 3.8L V6 Supercharged | 21760 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| TERREPOWER Fits: 3.8L V6 Supercharged | 82345 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
This table covers the alternators that charge the battery and run the electrical load. Typical signs include dim lights at idle, a battery lamp, or a growl from the charging pulley. Load-test the battery and inspect the belt and grounds — a bad ground mimics a failed alternator.
10 Alternator / Generator parts are listed for the 2000 Buick Regal, from ACDELCO, PURE ENERGY, REMY and 3 other brands. ACDELCO 3351232 carries the "Popular" badge.
In the New grade, ACDELCO, WAI GLOBAL, PURE ENERGY and 2 other brands supply 5 parts: brand-new units rather than rebuilt ones. A representative part number is ACDELCO 3351232.
In the Remanufactured grade, ACDELCO, FVP, PURE ENERGY and 2 other brands supply 5 parts: factory-rebuilt units with new wear components. A representative part number is ACDELCO 3342478A.
Alternator / Generator Diode Rectifier
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Fits: 3.8L V6 Supercharged | 2D3107 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the rectifier diode packs in the alternator.
One part is listed for the 2000 Buick Regal — WELLS 2D3107.
Automatic Headlamp Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.8L V6 Supercharged | 12450121 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Automatic Headlamp sensors. Typical signs include a warning lamp, a stored code, or a reading that drops out when the harness is wiggled. Inspect the connector and ground before replacing the sensor — wiring faults are often condemned as bad sensors.
This group shows a single part: GM GENUINE 12450121.
Battery
AGM (Extended Life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DEKA Popular Fits: 3.8L V6 Supercharged | 9A78DT | 🇺🇸 US 🇨🇦 CA | IntimidatorAGM | View on Amazon |
| ACDELCO Fits: 3.8L V6 Supercharged | 78XAGM | 🇺🇸 US 🇨🇦 CA | AGMBCI Group: 78 | View on Amazon |
| DEKA Fits: 3.8L V6 Supercharged | 9A78 | 🇺🇸 US 🇨🇦 CA | IntimidatorAGM | View on Amazon |
| FVP Fits: 3.8L V6 Supercharged | 78AGMG | 🇺🇸 US 🇨🇦 CA | Platinum AGMBCI Group: 78 | View on Amazon |
Performance AGM (Extended Life + Increased Power)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FULLRIVER Fits: 3.8L V6 Supercharged | FT82578 | 🇺🇸 US 🇨🇦 CA | AGMBCI Group 78 | View on Amazon |
This table covers the batteries listed by group size and specification. Typical signs include slow cranking, a battery lamp, or a no-start after the vehicle sat overnight. Confirm group size and terminal layout in the notes. Clean the posts and the ground before condemning the battery.
5 Battery parts for the 2000 Buick Regal come from 4 brands — DEKA, ACDELCO, FVP and 1 other brand. The "Popular" part is DEKA 9A78DT.
In the AGM (Extended Life) grade, DEKA, ACDELCO and FVP supply 4 parts: grouped under the catalog's "AGM (Extended Life)" designation — the notes column spells out what sets them apart. A representative part number is DEKA 9A78DT.
In the Performance AGM (Extended Life + Increased Power) grade, FULLRIVER supplies 1 part: grouped under the catalog's "Performance AGM (Extended Life + Increased Power)" designation — the notes column spells out what sets them apart. A representative part number is FULLRIVER FT82578.
Part numbers include DEKA 9A78DT, ACDELCO 78XAGM and DEKA 9A78, among others listed above.
Battery Cable
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 3.8L V6 Supercharged | A514HD | 🇺🇸 US 🇨🇦 CA | NegativeBATTERY TO GROUND | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.8L V6 Supercharged | A462HD | 🇺🇸 US 🇨🇦 CA | PositiveBATTERY TO SWITCH | View on Amazon |
This table covers the positive and ground cables that run from the battery. Typical signs include a stretched or frayed cable, or a control that no longer reaches the end of its travel. Route the new cable through the same clips. A kinked cable binds and fails early.
STANDARD MOTOR PRODUCTS supplies both parts for the 2000 Buick Regal.
Part numbers include STANDARD MOTOR PRODUCTS A514HD and STANDARD MOTOR PRODUCTS A462HD.
Battery Terminal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DEKA Fits: 3.8L V6 Supercharged | 00351 | 🇺🇸 US 🇨🇦 CA | Universal Terminal for side terminal batteries | View on Amazon |
This table covers the terminals and clamps that connect cables to the battery posts.
This group shows a single part: DEKA 00351.
Battery Terminal Protector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 3.8L V6 Supercharged | 60300 | 🇺🇸 US 🇨🇦 CA | Battery Terminal Guard Assortment | View on Amazon |
| GM GENUINE Fits: 3.8L V6 Supercharged | 12010050 | 🇺🇸 US 🇨🇦 CA | Red | View on Amazon |
| GM GENUINE Fits: 3.8L V6 Supercharged | 19119011 | 🇺🇸 US 🇨🇦 CA | Red | View on Amazon |
This table covers the covers that protect battery terminals.
3 Battery Terminal Protector parts for the 2000 Buick Regal come from 2 brands — GM GENUINE and DORMAN.
This group includes DORMAN 60300, GM GENUINE 12010050 and GM GENUINE 19119011.
Body Control Module (BCM)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Fits: 3.8L V6 Supercharged | 21812849 | 🇺🇸 US 🇨🇦 CA | GM Original EquipmentRemanufactured | View on Amazon |
This table covers the body-control modules that run lighting, locks and wipers.
One part is listed for the 2000 Buick Regal — ACDELCO 21812849.
Circuit Breaker
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BUSSMANN Fits: 3.8L V6 Supercharged | CB21230 | 🇺🇸 US 🇨🇦 CA | 30 AmpsMini | View on Amazon |
| LITTELFUSE Fits: 3.8L V6 Supercharged | MIB30 | 🇺🇸 US 🇨🇦 CA | Fits Defogger (Rear Window)Fuse in passenger compartmentor Power Seats | View on Amazon |
This table covers the resettable circuit breakers in this vehicle's electrical system.
2 Circuit Breaker parts for the 2000 Buick Regal come from 2 brands — BUSSMANN and LITTELFUSE.
Part numbers include BUSSMANN CB21230 and LITTELFUSE MIB30.
Engine Control Module (ECM Computer)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Fits: 3.8L V6 Supercharged | 21812675 | 🇺🇸 US 🇨🇦 CA | GoldRemanufactured | View on Amazon |
This table covers the engine-control modules that run fuel, spark and emissions.
One part is listed for the 2000 Buick Regal — ACDELCO 21812675.
Flasher
Heavy-Duty Electronic
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BUSSMANN Fits: 3.8L V6 Supercharged | 761 | 🇺🇸 US 🇨🇦 CA | Heavy-Duty Electronic FlasherHeavy-Duty Electric, 12v, 3 terminal, 12.6amp, 2-6 bulbs | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CEC INDUSTRIES Fits: 3.8L V6 Supercharged | EF28 | 🇺🇸 US 🇨🇦 CA | Fits Flasher Directionalor Flasher Emergency | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular Fits: 3.8L V6 Supercharged | EFL5 | 🇺🇸 US 🇨🇦 CA | Fits Turn Signalor HAZARD WARNING | View on Amazon |
| TRIDON / NOVITA Fits: 3.8L V6 Supercharged | EP28 | 🇺🇸 US 🇨🇦 CA | Electronic Flasher | View on Amazon |
| WELLS Fits: 3.8L V6 Supercharged | 1R2191 | 🇺🇸 US 🇨🇦 CA | Fits HAZARD WARNING | View on Amazon |
This table covers the flasher units that blink the turn signals and hazards.
5 Flasher parts for the 2000 Buick Regal come from 5 brands — BUSSMANN, CEC INDUSTRIES, STANDARD MOTOR PRODUCTS and 2 other brands. The "Popular" part is STANDARD MOTOR PRODUCTS EFL5.
The Heavy-Duty Electronic section lists 1 option from BUSSMANN — grouped under the catalog's "Heavy-Duty Electronic" designation — the notes column spells out what sets them apart. BUSSMANN 761 is listed in this group.
In the Standard Replacement grade, CEC INDUSTRIES supplies 1 part: built to original-equipment specification. A representative part number is CEC INDUSTRIES EF28.
3 further parts sit outside the graded sections, with the same engine-level match.
Listed part numbers: STANDARD MOTOR PRODUCTS EFL5, BUSSMANN 761 and CEC INDUSTRIES EF28, plus the other parts above.
Horn
Accessory Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FIAMM Popular Fits: 3.8L V6 Supercharged | 72112 | 🇺🇸 US 🇨🇦 CA | Freeway BlasterAccessory Horn | View on Amazon |
| FIAMM Fits: 3.8L V6 Supercharged | 7211223 | 🇺🇸 US 🇨🇦 CA | Accessory Horn (Louder)FWY Blaster | View on Amazon |
| FIAMM Fits: 3.8L V6 Supercharged | 7410024 | 🇺🇸 US 🇨🇦 CA | Accessory HornEl Grande | View on Amazon |
| FIAMM Fits: 3.8L V6 Supercharged | 6602023 | 🇺🇸 US 🇨🇦 CA | Accessory HornRed | View on Amazon |
| FIAMM Fits: 3.8L V6 Supercharged | 6602523 | 🇺🇸 US 🇨🇦 CA | Accessory HornChrome | View on Amazon |
| FIAMM Fits: 3.8L V6 Supercharged | 6604523 | 🇺🇸 US 🇨🇦 CA | Ultimate Blast HornAccessory Horn | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FIAMM Popular Fits: 3.8L V6 Supercharged | 7200223 | 🇺🇸 US 🇨🇦 CA | OE Replacement Tone2 Terminal Blade Connection (Cut off and reuse OE Connector) | View on Amazon |
| FIAMM Popular Fits: 3.8L V6 Supercharged | 7421122 | 🇺🇸 US 🇨🇦 CA | OE Replacement Horn KitIncludes OE Connectors & L Bracket | View on Amazon |
| FIAMM Popular Fits: 3.8L V6 Supercharged | 7250522 | 🇺🇸 US 🇨🇦 CA | OE Replacement Horn KitIncludes OE Connectors & L Bracket | View on Amazon |
| ACDELCO Fits: 3.8L V6 Supercharged | E1905E | 🇺🇸 US 🇨🇦 CA | Gold2 Pin Connection | View on Amazon |
| FIAMM Fits: 3.8L V6 Supercharged | 7421322 | 🇺🇸 US 🇨🇦 CA | OE Replacement Horn KitIncludes OE Connectors | View on Amazon |
| FIAMM Fits: 3.8L V6 Supercharged | 7250622 | 🇺🇸 US 🇨🇦 CA | OE Replacement Horn KitIncludes OE Connectors & L Bracket | View on Amazon |
| GM GENUINE Fits: 3.8L V6 Supercharged | 84594590 | 🇺🇸 US 🇨🇦 CA | with Bracket | View on Amazon |
| GM GENUINE Fits: 3.8L V6 Supercharged | 84594588 | 🇺🇸 US 🇨🇦 CA | High Note | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.8L V6 Supercharged | HN17T | 🇺🇸 US 🇨🇦 CA | T-SeriesUniversal | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.8L V6 Supercharged | HN18 | 🇺🇸 US 🇨🇦 CA | High Output Low Tone | View on Amazon |
This table covers the horns mounted in the front of the vehicle.
16 Horn parts for the 2000 Buick Regal come from 4 brands — FIAMM, GM GENUINE, STANDARD MOTOR PRODUCTS and 1 other brand. The "Popular" part is FIAMM 72112.
The Accessory Replacement section lists 6 options from FIAMM — grouped under the catalog's "Accessory Replacement" designation — the notes column spells out what sets them apart. FIAMM 72112 is listed in this group.
Standard Replacement: 10 parts, from FIAMM, GM GENUINE, STANDARD MOTOR PRODUCTS and 1 other brand. A representative part number is FIAMM 7200223.
Keyless Entry Remote Case
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 3.8L V6 Supercharged | 13608 | 🇺🇸 US 🇨🇦 CA | Black | View on Amazon |
This table covers the replacement shells for the key fob.
One part is listed for the 2000 Buick Regal — DORMAN 13608.
Speed Sensor Reluctor Thrust Washer
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.8L V6 Supercharged | 24230403 | 🇺🇸 US 🇨🇦 CA | INPUT | View on Amazon |
This table covers the Speed Sensor Reluctor Thrust washers.
This group shows a single part: GM GENUINE 24230403.
Buying Electrical Parts for a 2000 Buick Regal
On this vehicle, the electrical system covers charging, starting and the sensors and modules the vehicle relies on, from alternator and starter to oxygen sensors.
- Match the engine first. Every electrical part here is engine-specific; each row shows which engine(s) it fits.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, clean or renew the battery terminals and grounds with any charging-system repair.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Horn and Alternator / Generator .
Frequently Asked Questions
How many electrical parts fit the 2000 Buick Regal?
Our catalog currently lists 50 electrical parts for the 2000 Buick Regal across 14 subcategories and 17 brands, covering both the 3.8L V6 and the 3.8L V6 Supercharged. Each part is matched to the engine(s) it fits.
Do electrical parts differ between 2000 Buick Regal engines?
Yes. Every electrical part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.
What are the signs of electrical problems on a 2000 Buick Regal?
Common symptoms include slow cranking on cold mornings, a battery light that flickers, dim lights at idle, or a check-engine code pointing at a sensor circuit. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, clean or renew the battery terminals and grounds with any charging-system repair.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2000 Buick Regal was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 2000 Buick Regal?
First match the engine — each row shows which engine(s) the part fits. Then test before replacing — a failed alternator and a bad ground can look identical, and sensors are frequently condemned for wiring faults. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2000 Buick Regal
Electrical Parts for Other Buick Regal Years
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