This page lists 45 electrical parts for the 2020 Mazda 3, across 6 part types, covering both the 2.0L L4 and the 2.5L L4. Every part shows its brand, manufacturer part number and fitment notes.
The electrical system on the 2020 Mazda 3 covers charging, starting and the sensors and modules the vehicle relies on, from alternator and starter to oxygen sensors. The largest groups are Starter Motor (15 parts), Battery (12 parts) and Alternator / Generator (8 parts). The other 3 part types cover the remaining 10 parts.
The 2020 Mazda 3 was sold with both the 2.0L L4 and the 2.5L L4. 20 parts fit every engine; the other 25 are engine-specific. Each part shows which engine(s) it fits.
17 brands supply electrical parts for the 2020 Mazda 3, led by FIAMM (7 parts), FVP (5 parts) and TERREPOWER (5 parts), plus 14 more brands. Quality grades include Remanufactured, AGM and New.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2020 Mazda 3. 11 parts have it, including PURE ENERGY 11596 (Alternator / Generator) and DEKA 9A3585 (Battery). Each part number opens a page with every vehicle that part fits.
Alternator / Generator
New
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAI GLOBAL Fits: 2.5L L4 | 11969N | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 3 Base ModelExc. Cylinder Deactivation | View on Amazon |
| WAI GLOBAL Fits: 2.5L L4 | 22310N | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 3 Base ModelCylinder Deactivation | View on Amazon |
Remanufactured
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PURE ENERGY Popular Fits: 2.5L L4 | 11596 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Remanufactured | View on Amazon |
| PURE ENERGY Popular Fits: 2.5L L4 | 11595 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Remanufactured | View on Amazon |
| FVP Fits: 2.5L L4 | 11595 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Remanufactured | View on Amazon |
| FVP Fits: 2.5L L4 | 11596 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Remanufactured | View on Amazon |
| REMY Fits: 2.5L L4 | 11542 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Remanufactured | View on Amazon |
| TERREPOWER Fits: 2.5L L4 | 11969 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 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.
8 Alternator / Generator parts for the 2020 Mazda 3 come from 5 brands — WAI GLOBAL, PURE ENERGY, FVP and 2 other brands. The "Popular" part is PURE ENERGY 11596.
The New section lists 2 options from WAI GLOBAL — brand-new units rather than rebuilt ones. WAI GLOBAL 11969N is listed in this group.
The Remanufactured section lists 6 options from PURE ENERGY, FVP, REMY and 1 other brand — factory-rebuilt units with new wear components. PURE ENERGY 11596 is listed in this group.
Listed part numbers: PURE ENERGY 11596, WAI GLOBAL 11969N and WAI GLOBAL 22310N, plus the other parts above.
Battery
AGM (Extended Life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DEKA Popular Fits: all 2020 3 engines | 9A3585 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | IntimidatorAGM | View on Amazon |
| DEKA Popular Fits: all 2020 3 engines | 9A47 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | IntimidatorAGM | View on Amazon |
| LUCAS Popular Fits: all 2020 3 engines | LBAGM001A | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | BCI Group: 47AGM | View on Amazon |
| ACDELCO Fits: all 2020 3 engines | 35AGM | 🇺🇸 US 🇨🇦 CA | AGMBCI Group: 35 | View on Amazon |
| EXIDE Fits: all 2020 3 engines | MX35 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Marathon MaxBCI Group 35 | View on Amazon |
| EXIDE Fits: all 2020 3 engines | MXH5L247 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Marathon MaxBCI Group 47 (H5) | View on Amazon |
| FVP Fits: all 2020 3 engines | P47AGM | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Platinum AGMBCI Group: 47 | View on Amazon |
| FVP Fits: all 2020 3 engines | P35AGM | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Platinum AGMBCI Group: 35 | View on Amazon |
| P1MAX Fits: all 2020 3 engines | PMAGMH547 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | BCI Group 47 AGM680 CCA | View on Amazon |
| P1MAX Fits: all 2020 3 engines | PMAGM35 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | BCI Group 35 AGM650 CCA | View on Amazon |
Performance AGM (Extended Life + Increased Power)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FULLRIVER Fits: all 2020 3 engines | FT61047 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | BCI Group 47(Length X Width X Height) 9.49 In x 6.89 In x 7.48 In | View on Amazon |
| FULLRIVER Fits: all 2020 3 engines | FT75035 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | BCI Group 35(Length X Width X Height) 9.45 In x 6.85 In x 8.66 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.
12 Battery parts are listed for the 2020 Mazda 3, from DEKA, EXIDE, FVP and 4 other brands. DEKA 9A3585 carries the "Popular" badge. All of them fit every engine offered in the 2020 3.
The AGM (Extended Life) section lists 10 options from DEKA, EXIDE, FVP and 3 other brands — grouped under the catalog's "AGM (Extended Life)" designation — the notes column spells out what sets them apart. DEKA 9A3585 is listed in this group.
The Performance AGM (Extended Life + Increased Power) section lists 2 options 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.
Horn
Accessory Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FIAMM Popular Fits: 2.5L L4 | 72112 | 🇺🇸 US 🇨🇦 CA | Freeway BlasterAccessory Horn | View on Amazon |
| FIAMM Fits: all 2020 3 engines | 7410024 | 🇺🇸 US 🇨🇦 CA | Accessory HornEl Grande | View on Amazon |
| FIAMM Fits: all 2020 3 engines | 6602023 | 🇺🇸 US 🇨🇦 CA | Accessory HornRed | View on Amazon |
| FIAMM Fits: all 2020 3 engines | 6602523 | 🇺🇸 US 🇨🇦 CA | Accessory HornChrome | View on Amazon |
| FIAMM Fits: all 2020 3 engines | 6604523 | 🇺🇸 US 🇨🇦 CA | Ultimate Blast HornAccessory Horn | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FIAMM Popular Fits: all 2020 3 engines | 7421122 | 🇺🇸 US 🇨🇦 CA | OE Replacement Horn KitIncludes OE Connectors & L Bracket | View on Amazon |
| FIAMM Popular Fits: all 2020 3 engines | 7421322 | 🇺🇸 US 🇨🇦 CA | OE Replacement Horn KitIncludes OE Connectors | View on Amazon |
This table covers the horns mounted in the front of the vehicle.
FIAMM supplies the 7 Horn parts for the 2020 Mazda 3. FIAMM 72112 carries the "Popular" badge. 6 parts fit every engine; the other 1 is engine-specific.
In the Accessory Replacement grade, FIAMM supplies 5 parts: grouped under the catalog's "Accessory Replacement" designation — the notes column spells out what sets them apart. A representative part number is FIAMM 72112.
The Standard Replacement section lists 2 options from FIAMM — built to original-equipment specification. FIAMM 7421122 is listed in this group.
Part numbers include FIAMM 72112, FIAMM 7410024 and FIAMM 6602023, among others listed above.
Parking Aid Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2020 3 engines | PPS222 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Black | View on Amazon |
| VARIOUS MFR Fits: all 2020 3 engines | MA1075102 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Customer Paints to Match | 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.
2 Parking Aid Sensor parts for the 2020 Mazda 3 come from 2 brands — STANDARD MOTOR PRODUCTS and VARIOUS MFR. Every part fits both the 2.0L L4 and the 2.5L L4.
Listed part numbers: STANDARD MOTOR PRODUCTS PPS222 and VARIOUS MFR MA1075102.
Speed Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.5L L4 | SC824 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 3 Base ModelVehicle Speed | View on Amazon |
This table covers the speed sensors on the transmission, transfer case or ABS ring. Typical signs include a dead speedometer, harsh transmission shifts, or a code for vehicle speed. Inspect the tone wheel and the connector before replacing the sensor.
One part is listed for the 2020 Mazda 3 — STANDARD MOTOR PRODUCTS SC824.
Starter Motor
New
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TYC Popular Fits: 2.5L L4 | 111713 | 🇺🇸 US | View on Amazon | |
| ULTRA-POWER Popular Fits: 2.5L L4 | 111713 | 🇺🇸 US 🇨🇦 CA | Fits SelectSedanor 3 BASE MODEL | View on Amazon |
| BOSCH Fits: 2.5L L4 | SR4245N | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| REMY Fits: 2.0L L4 | 99252 | 🇨🇦 CA | View on Amazon | |
| TERREPOWER Fits: 2.0L L4 | N52041 | 🇨🇦 CA | View on Amazon | |
| TERREPOWER Fits: 2.5L L4 | N52040 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| WAI GLOBAL Fits: 2.5L L4 | 11713N | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 3 Base Model | View on Amazon |
Remanufactured
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular Fits: 2.5L L4 | 3362266 | 🇺🇸 US 🇨🇦 CA | GoldRemanufactured | View on Amazon |
| BOSCH Fits: 2.5L L4 | SR4245X | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Remanufactured | View on Amazon |
| FVP Fits: 2.5L L4 | 19541 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Remanufactured | View on Amazon |
| PURE ENERGY Fits: 2.5L L4 | 19541 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Remanufactured | View on Amazon |
| REMY Fits: 2.0L L4 | 16222 | 🇨🇦 CA | Remanufactured | View on Amazon |
| REMY Fits: 2.5L L4 | 16232 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Remanufactured | View on Amazon |
| TERREPOWER Fits: 2.0L L4 | 52041 | 🇨🇦 CA | Remanufactured | View on Amazon |
| TERREPOWER Fits: 2.5L L4 | 52040 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Remanufactured | View on Amazon |
This table covers the starter motors that crank the engine. Typical signs include no motion, a squeal, or a motor that only runs on one speed. Confirm power, ground and the control module before replacing the motor.
15 Starter Motor parts for the 2020 Mazda 3 come from 9 brands — TERREPOWER, REMY, BOSCH and 6 other brands. The "Popular" part is TYC 111713.
The New section: 7 options from TERREPOWER, TYC, ULTRA-POWER and 3 other brands. TYC 111713 is listed in this group.
The Remanufactured section: 8 options from REMY, TERREPOWER, ACDELCO and 3 other brands. ACDELCO 3362266 is listed in this group.
Buying Electrical Parts for a 2020 Mazda 3
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: Starter Motor and Battery .
Frequently Asked Questions
How many electrical parts fit the 2020 Mazda 3?
Our catalog currently lists 45 electrical parts for the 2020 Mazda 3 across 6 subcategories and 17 brands, covering both the 2.0L L4 and the 2.5L L4. Each part is matched to the engine(s) it fits.
Do electrical parts differ between 2020 Mazda 3 engines?
Some do. 20 parts fit every engine; the other 25 are 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 2020 Mazda 3?
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 2020 Mazda 3 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 2020 Mazda 3?
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 2020 Mazda 3
Electrical Parts for Other Mazda 3 Years
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