The 2021 Acura NSX has 12 electrical parts with verified fitment on this page — 2 part types and 7 brands, covering the 3.5L V6 ELECTRIC/GAS Turbocharged engine. Each part includes a manufacturer part number and application notes.
On the 2021 Acura NSX, the electrical system covers charging, starting and the sensors and modules the vehicle relies on, from alternator and starter to oxygen sensors. All 12 listed parts are Battery (8 parts) and Fuse (4 parts).
The 2021 Acura NSX came with a single engine, the 3.5L V6 ELECTRIC/GAS Turbocharged, and every part is verified against it.
7 brands supply electrical parts for the 2021 Acura NSX, led by BUSSMANN (4 parts), ACDELCO (3 parts) and LUCAS (1 part), plus 4 more brands. Quality grades include AGM, 2 Amp and 20 Amp.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2021 Acura NSX. 2 parts have it, including ACDELCO 47AGM (Battery) and LUCAS LBAGM001A (Battery). Each part number opens a page with every vehicle that part fits.
Battery
AGM (Extended Life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular | 47AGM | 🇺🇸 US 🇨🇦 CA | AGMBCI Group: 47 | View on Amazon |
| LUCAS Popular | LBAGM001A | 🇺🇸 US 🇨🇦 CA | BCI Group: 47AGM | View on Amazon |
| ACDELCO | EVLN2AGM | 🇺🇸 US 🇨🇦 CA | AGMBCI Group: 47 | View on Amazon |
| ACDELCO | 47SAGM | 🇺🇸 US 🇨🇦 CA | AGMBCI Group: 47 | View on Amazon |
| DEKA | 9A47 | 🇺🇸 US 🇨🇦 CA | IntimidatorAGM | View on Amazon |
| EXIDE | MXH5L247 | 🇺🇸 US 🇨🇦 CA | Marathon MaxBCI Group 47 (H5) | View on Amazon |
| FVP | P47AGM | 🇺🇸 US 🇨🇦 CA | Platinum AGMBCI Group: 47 | View on Amazon |
Performance AGM (Extended Life + Increased Power)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FULLRIVER | FT61047 | 🇺🇸 US 🇨🇦 CA | BCI Group 47(Length X Width X Height) 9.49 In x 6.89 In x 7.48 In | 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.
8 Battery parts are listed for the 2021 Acura NSX, from ACDELCO, LUCAS, DEKA and 3 other brands. ACDELCO 47AGM carries the "Popular" badge.
The AGM (Extended Life) section lists 7 options from ACDELCO, LUCAS, DEKA and 2 other brands — grouped under the catalog's "AGM (Extended Life)" designation — the notes column spells out what sets them apart. ACDELCO 47AGM is listed in this group.
The Performance AGM (Extended Life + Increased Power) section lists 1 option from FULLRIVER — grouped under the catalog's "Performance AGM (Extended Life + Increased Power)" designation — the notes column spells out what sets them apart. FULLRIVER FT61047 is listed in this group.
Part numbers include ACDELCO 47AGM, LUCAS LBAGM001A and ACDELCO EVLN2AGM, among others listed above.
Fuse
2 Amp
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BUSSMANN | ATM2 | 🇺🇸 US 🇨🇦 CA | ATM Series2 Amp | View on Amazon |
20 Amp
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BUSSMANN | FMS20 | 🇺🇸 US 🇨🇦 CA | 20 AmpsColor Blue | View on Amazon |
40 Amp
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BUSSMANN | FMS40 | 🇺🇸 US 🇨🇦 CA | 40 AmpColor Green | View on Amazon |
60 Amp
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BUSSMANN | FMS60 | 🇺🇸 US 🇨🇦 CA | 60 AmpsColor Yellow | View on Amazon |
This table covers the replacement fuses for this vehicle's fuse boxes. Typical signs include one circuit dead while its neighbor still works, or a fuse that blows again as soon as you replace it. Match amperage and fuse type. A repeat blow means a short — find it before the next fuse.
BUSSMANN supplies the 4 Fuse parts for the 2021 Acura NSX.
In the 2 Amp grade, BUSSMANN supplies 1 part: grouped under the catalog's "2 Amp" designation — the notes column spells out what sets them apart. A representative part number is BUSSMANN ATM2.
In the 20 Amp grade, BUSSMANN supplies 1 part: grouped under the catalog's "20 Amp" designation — the notes column spells out what sets them apart. A representative part number is BUSSMANN FMS20.
In the 40 Amp grade, BUSSMANN supplies 1 part: grouped under the catalog's "40 Amp" designation — the notes column spells out what sets them apart. A representative part number is BUSSMANN FMS40.
In the 60 Amp grade, BUSSMANN supplies 1 part: grouped under the catalog's "60 Amp" designation — the notes column spells out what sets them apart. A representative part number is BUSSMANN FMS60.
Part numbers include BUSSMANN ATM2, BUSSMANN FMS20 and BUSSMANN FMS40, among others listed above.
Buying Electrical Parts for a 2021 Acura NSX
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.
- Confirm you have the 3.5L V6 ELECTRIC/GAS Turbocharged engine — every part on this page is matched to it.
- 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: Battery and Fuse .
Frequently Asked Questions
How many electrical parts fit the 2021 Acura NSX?
Our catalog currently lists 12 electrical parts for the 2021 Acura NSX across 2 subcategories and 7 brands, covering the 3.5L V6 ELECTRIC/GAS Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of electrical problems on a 2021 Acura NSX?
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 2021 Acura NSX 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 2021 Acura NSX?
Every part on this page is matched to the 3.5L V6 ELECTRIC/GAS Turbocharged engine. 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 2021 Acura NSX
Electrical Parts for Other Acura NSX Years
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Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.