15 Electrical parts are listed for the 2021 Toyota Prius Prime, in 5 part types, covering the 1.8L L4 ELECTRIC/GAS engine. Each one has a brand, a manufacturer part number and notes that say where it fits.
The electrical system on the 2021 Toyota Prius Prime covers charging, starting and the sensors and modules the vehicle relies on, from alternator and starter to oxygen sensors. The largest groups are Parking Aid Sensor (6 parts), Battery (4 parts) and Battery Terminal (3 parts). The other 2 part types cover the remaining 2 parts.
Every part on this page is matched to the 1.8L L4 ELECTRIC/GAS — the only engine offered in the 2021 Toyota Prius Prime.
The most listed brands for 2021 Toyota Prius Prime electrical parts are STANDARD MOTOR PRODUCTS (9 parts), BOSCH (1 part) and DEKA (1 part), plus 4 more brands.
2 parts on this 2021 Toyota Prius Prime page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including STANDARD MOTOR PRODUCTS PPS166 (Parking Aid Sensor) and STANDARD MOTOR PRODUCTS PPS164 (Parking Aid Sensor). Click any part number to see every vehicle that part fits.
Battery
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BOSCH | S6566B | 🇺🇸 US 🇨🇦 CA | AGM | View on Amazon |
| DEKA | 9A140R | 🇺🇸 US 🇨🇦 CA | IntimidatorAGM | View on Amazon |
| FVP | PLN1AGM | 🇺🇸 US 🇨🇦 CA | Platinum AGMBCI Group: 140R | View on Amazon |
| MOTORCRAFT | BAGMH4 | 🇺🇸 US 🇨🇦 CA | Tested Tough AGM or Tested Tough MAX SeriesBCI Group 140R or BCI Group: 99R | 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.
4 Battery parts for the 2021 Toyota Prius Prime come from 4 brands — BOSCH, DEKA, FVP and 1 other brand.
Listed part numbers: BOSCH S6566B, DEKA 9A140R and FVP PLN1AGM, plus the other parts above.
Battery Terminal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BECK/ARNLEY | 2060001 | 🇺🇸 US 🇨🇦 CA | POSITIVEFor 12 Volt Battery | View on Amazon |
| DORMAN | 926515 | 🇺🇸 US 🇨🇦 CA | Positive Terminal | View on Amazon |
| STANDARD MOTOR PRODUCTS | BP100P | 🇺🇸 US 🇨🇦 CA | Top post, straight, positive | View on Amazon |
This table covers the terminals and clamps that connect cables to the battery posts.
3 Battery Terminal parts for the 2021 Toyota Prius Prime come from 3 brands — BECK/ARNLEY, DORMAN and STANDARD MOTOR PRODUCTS.
This group includes BECK/ARNLEY 2060001, DORMAN 926515 and STANDARD MOTOR PRODUCTS BP100P.
EV Charging Cable
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | EVB004 | 🇺🇸 US 🇨🇦 CA | Level 1 Charger Supplies 120 Volts at 12 Amps | View on Amazon |
This table covers the EV Charging cables. 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.
This group shows a single part: STANDARD MOTOR PRODUCTS EVB004.
Hybrid Battery Voltage Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | BSC35 | 🇺🇸 US 🇨🇦 CA | with 2 Connectors | View on Amazon |
This table covers the Hybrid Battery Voltage 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: STANDARD MOTOR PRODUCTS BSC35.
Parking Aid Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular | PPS166 | 🇺🇸 US 🇨🇦 CA | Fits White PearlFront Sid | View on Amazon |
| STANDARD MOTOR PRODUCTS Popular | PPS164 | 🇺🇸 US 🇨🇦 CA | Fits RearSILVER | View on Amazon |
| STANDARD MOTOR PRODUCTS | PPS104 | 🇺🇸 US 🇨🇦 CA | Front OuterWhite Pearl | View on Amazon |
| STANDARD MOTOR PRODUCTS | PPS163 | 🇺🇸 US 🇨🇦 CA | White | View on Amazon |
| STANDARD MOTOR PRODUCTS | PPS165 | 🇺🇸 US 🇨🇦 CA | Gray | View on Amazon |
| STANDARD MOTOR PRODUCTS | PPS170 | 🇺🇸 US 🇨🇦 CA | Front Inner | View on Amazon |
This table covers the ultrasonic park-aid sensors in the bumper. 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.
STANDARD MOTOR PRODUCTS supplies the 6 Parking Aid Sensor parts for the 2021 Toyota Prius Prime. STANDARD MOTOR PRODUCTS PPS166 carries the "Popular" badge.
Part numbers include STANDARD MOTOR PRODUCTS PPS166, STANDARD MOTOR PRODUCTS PPS164 and STANDARD MOTOR PRODUCTS PPS104, among others listed above.
Buying Electrical Parts for a 2021 Toyota Prius Prime
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 1.8L L4 ELECTRIC/GAS 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: Parking Aid Sensor and Battery .
Frequently Asked Questions
How many electrical parts fit the 2021 Toyota Prius Prime?
Our catalog currently lists 15 electrical parts for the 2021 Toyota Prius Prime across 5 subcategories and 7 brands, covering the 1.8L L4 ELECTRIC/GAS engine. Each part is matched to the engine(s) it fits.
What are the signs of electrical problems on a 2021 Toyota Prius Prime?
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 Toyota Prius Prime 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 Toyota Prius Prime?
Every part on this page is matched to the 1.8L L4 ELECTRIC/GAS 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 Toyota Prius Prime
Electrical Parts for Other Toyota Prius Prime Years
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