4 Electrical connector parts are listed for the 2021 Toyota Prius C, in 3 part types, covering the 1.5L L4 ELECTRIC/GAS engine. Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 2021 Toyota Prius C, the connector system supplies the pigtails and connector bodies that terminate the vehicle harness at lamps, sensors and modules. All 4 listed parts are Turn Signal Switch Connector (2 parts), Trailer Connector (1 part) and Vapor Leak Detection Pump Connector (1 part).
Every part on this page is matched to the 1.5L L4 ELECTRIC/GAS — the only engine offered in the 2021 Toyota Prius C.
The most listed brands for 2021 Toyota Prius C electrical connector parts are STANDARD MOTOR PRODUCTS (3 parts) and CURT (1 part).
Each part number listed for the 2021 Toyota Prius C opens a page with every vehicle that part fits.
Trailer Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CURT | 56275 | 🇲🇽 MX | Custom Wiring Harness4-Way Flat | View on Amazon |
This table covers the trailer-lighting connectors at the hitch. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
This group shows a single part: CURT 56275.
Turn Signal Switch Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | S3083 | 🇲🇽 MX | Connector Shape: Rectangle | View on Amazon |
| STANDARD MOTOR PRODUCTS | S2539 | 🇲🇽 MX | Frontwith 3 Blade Terminals | View on Amazon |
This table covers the harness connectors at the Turn Signal Switch. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
2 Turn Signal Switch Connector parts for the 2021 Toyota Prius C come from STANDARD MOTOR PRODUCTS.
This group includes STANDARD MOTOR PRODUCTS S3083 and STANDARD MOTOR PRODUCTS S2539.
Vapor Leak Detection Pump Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | S2818 | 🇲🇽 MX | Gauge: 20 Gauge | View on Amazon |
This table covers the harness connectors at the Vapor Leak Detection Pump. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
One part is listed for the 2021 Toyota Prius C — STANDARD MOTOR PRODUCTS S2818.
Buying Electrical Connector Parts for a 2021 Toyota Prius C
On this vehicle, the connector system supplies the pigtails and connector bodies that terminate the vehicle harness at lamps, sensors and modules.
- Confirm you have the 1.5L 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, use heat-shrink crimp connectors rather than twist-and-tape for any pigtail splice, especially outside the cabin.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Turn Signal Switch Connector and Trailer Connector .
Frequently Asked Questions
How many electrical connector parts fit the 2021 Toyota Prius C?
Our catalog currently lists 4 electrical connector parts for the 2021 Toyota Prius C across 3 subcategories and 2 brands, covering the 1.5L L4 ELECTRIC/GAS engine. Each part is matched to the engine(s) it fits.
What are the signs of electrical connector problems on a 2021 Toyota Prius C?
Common symptoms include intermittent faults that move when the harness is wiggled, green corrosion inside a plug, or melted connector housings near heat sources. 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, use heat-shrink crimp connectors rather than twist-and-tape for any pigtail splice, especially outside the cabin.
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 C 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 C?
Every part on this page is matched to the 1.5L L4 ELECTRIC/GAS engine. Then match the connector by terminal count and keyway, not just appearance — many families look identical but will not lock. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2021 Toyota Prius C
Electrical Connector Parts for Other Toyota Prius C 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.