7 Electrical parts are listed for the 2021 Honda Clarity, in 3 part types, covering both the 1.5L L4 ELECTRIC/GAS and the ELECTRIC. Each one has a brand, a manufacturer part number and notes that say where it fits.
The electrical system on the 2021 Honda Clarity covers charging, starting and the sensors and modules the vehicle relies on, from alternator and starter to oxygen sensors. All 7 listed parts are Battery (5 parts), Battery Current Sensor (1 part) and Battery Terminal (1 part).
The 2021 Honda Clarity was sold with both the 1.5L L4 ELECTRIC/GAS and the ELECTRIC. 6 parts fit every engine; the other 1 is engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2021 Honda Clarity electrical parts are ACDELCO (1 part), BOSCH (1 part) and DEKA (1 part), plus 4 more brands.
Each part number listed for the 2021 Honda Clarity opens a page with every vehicle that part fits.
Battery
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Fits: all 2021 Clarity engines | 51RAGM | 🇺🇸 US 🇨🇦 CA | AGMBCI Group: 51R | View on Amazon |
| BOSCH Fits: all 2021 Clarity engines | S6594B | 🇺🇸 US 🇨🇦 CA | AGM | View on Amazon |
| DEKA Fits: all 2021 Clarity engines | 9A51RT | 🇺🇸 US 🇨🇦 CA | AGMIntimidator | View on Amazon |
| FVP Fits: all 2021 Clarity engines | P51RAGM | 🇺🇸 US 🇨🇦 CA | Platinum AGM | View on Amazon |
| P1MAX Fits: 1.5L L4 ELECTRIC/GAS | PMAGM51R | 🇺🇸 US 🇨🇦 CA | BCI Group 51R AGM500 CCA | 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 2021 Honda Clarity come from 5 brands — ACDELCO, BOSCH, DEKA and 2 other brands. 4 parts fit every engine; the other 1 is engine-specific.
Part numbers include ACDELCO 51RAGM, BOSCH S6594B and DEKA 9A51RT, among others listed above.
Battery Current Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 Clarity engines | BSC144 | 🇺🇸 US 🇨🇦 CA | Intelligent Battery Sensor | View on Amazon |
This table covers the Battery Current 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.
One part is listed for the 2021 Honda Clarity — STANDARD MOTOR PRODUCTS BSC144.
Battery Terminal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: all 2021 Clarity engines | 926515 | 🇺🇸 US 🇨🇦 CA | Positive Terminal | View on Amazon |
This table covers the terminals and clamps that connect cables to the battery posts.
This group shows a single part: DORMAN 926515.
Buying Electrical Parts for a 2021 Honda Clarity
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. Some electrical parts fit every engine; others are 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: Battery and Battery Current Sensor .
Frequently Asked Questions
How many electrical parts fit the 2021 Honda Clarity?
Our catalog currently lists 7 electrical parts for the 2021 Honda Clarity across 3 subcategories and 7 brands, covering both the 1.5L L4 ELECTRIC/GAS and the ELECTRIC. Each part is matched to the engine(s) it fits.
Do electrical parts differ between 2021 Honda Clarity engines?
Some do. 6 parts fit every engine; the other 1 is engine-specific. Each row (and the filter at the top) shows which. 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 2021 Honda Clarity?
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 Honda Clarity 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 Honda Clarity?
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 2021 Honda Clarity
Electrical Parts for Other Honda Clarity Years
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