The 2018 Toyota Corolla Im has 54 electrical parts with verified fitment on this page — 9 part types and 23 brands, covering the 1.8L L4 engine. Each part includes a manufacturer part number and application notes.
On the 2018 Toyota Corolla Im, the electrical system covers charging, starting and the sensors and modules the vehicle relies on, from alternator and starter to oxygen sensors. Most of the listed parts are Fuse (13 parts), Alternator / Generator (12 parts) and Starter Motor (8 parts). The other 6 part types cover the remaining 21 parts.
Every part on this page is matched to the 1.8L L4 — the only engine offered in the 2018 Toyota Corolla Im.
The most listed brands for 2018 Toyota Corolla Im electrical parts are BUSSMANN (13 parts), TERREPOWER (7 parts) and REMY (5 parts), plus 20 more brands. Quality grades include Remanufactured, New and AGM.
12 parts on this 2018 Toyota Corolla Im page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including SKP SK42025 (Alternator / Generator) and P1MAX PMAGM35 (Battery). Click any part number to see every vehicle that part fits.
Alternator / Generator
New
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKP Popular | SK42025 | 🇺🇸 US 🇨🇦 CA | 115 Amps | View on Amazon |
| TERREPOWER | N42024 | 🇺🇸 US 🇨🇦 CA | Nippondenso Unitwith 2-Pin Alternator Plug | View on Amazon |
| TERREPOWER | N42025 | 🇺🇸 US 🇨🇦 CA | Valeo Unitwith 2-Pin Alternator Plug | View on Amazon |
Remanufactured
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP Popular | 10330 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| TERREPOWER Popular | 42024 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| REMY | 11186 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| REMY | 11272 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| REMY | 11187 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| REMY | 11184 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| TERREPOWER | 42147 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| TERREPOWER | 42025 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| TERREPOWER | 42026 | 🇺🇸 US 🇨🇦 CA | 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.
12 Alternator / Generator parts are listed for the 2018 Toyota Corolla Im, from TERREPOWER, REMY, SKP and 1 other brand. SKP SK42025 carries the "Popular" badge.
In the New grade, TERREPOWER and SKP supply 3 parts: brand-new units rather than rebuilt ones. A representative part number is SKP SK42025.
In the Remanufactured grade, TERREPOWER, REMY and FVP supply 9 parts: factory-rebuilt units with new wear components. A representative part number is FVP 10330.
Alternator / Generator Pulley
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CONTINENTAL | 49963 | 🇺🇸 US 🇨🇦 CA | with Denso Alternator. | View on Amazon |
| LITENS | 920055A | 🇺🇸 US 🇨🇦 CA | Installation Tool Required | View on Amazon |
| WELLS | 2D5005 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the pulleys on the alternator shaft. Typical signs include a growl or chirp that follows engine speed, or a pulley that will not spin freely by hand. Spin each pulley with the belt off. Roughness or play means replace it with the belt.
3 Alternator / Generator Pulley parts for the 2018 Toyota Corolla Im come from 3 brands — CONTINENTAL, LITENS and WELLS.
This group includes CONTINENTAL 49963, LITENS 920055A and WELLS 2D5005.
Automatic Headlamp Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS | 5S8091 | 🇺🇸 US 🇨🇦 CA | Mounting Bracket Included: No | View on Amazon |
This table covers the Automatic Headlamp 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: WELLS 5S8091.
Battery
AGM (Extended Life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| P1MAX Popular | PMAGM35 | 🇺🇸 US 🇨🇦 CA | BCI Group 35 AGM650 CCA | View on Amazon |
| ACDELCO | 35AGM | 🇺🇸 US 🇨🇦 CA | AGMBCI Group: 35 | View on Amazon |
| BOSCH | S6523B | 🇺🇸 US 🇨🇦 CA | AGMAGM | View on Amazon |
| EXIDE | MX35 | 🇺🇸 US 🇨🇦 CA | Marathon MaxBCI Group 35 | View on Amazon |
Performance AGM (Extended Life + Increased Power)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FULLRIVER | FT75035 | 🇺🇸 US 🇨🇦 CA | 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.
5 Battery parts for the 2018 Toyota Corolla Im come from 5 brands — P1MAX, ACDELCO, BOSCH and 2 other brands. The "Popular" part is P1MAX PMAGM35.
In the AGM (Extended Life) grade, P1MAX, ACDELCO, BOSCH and 1 other brand supply 4 parts: grouped under the catalog's "AGM (Extended Life)" designation — the notes column spells out what sets them apart. A representative part number is P1MAX PMAGM35.
In the Performance AGM (Extended Life + Increased Power) grade, FULLRIVER supplies 1 part: grouped under the catalog's "Performance AGM (Extended Life + Increased Power)" designation — the notes column spells out what sets them apart. A representative part number is FULLRIVER FT75035.
Listed part numbers: P1MAX PMAGM35, ACDELCO 35AGM and BOSCH S6523B, plus the other parts above.
Battery Terminal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular | BP100P | 🇺🇸 US 🇨🇦 CA | Top post, straight, positive | View on Amazon |
| AUTOTECNICA | TY1318200 | 🇺🇸 US 🇨🇦 CA | Negative Terminal (New Style) | View on Amazon |
| BECK/ARNLEY | 2060001 | 🇺🇸 US 🇨🇦 CA | Positive | View on Amazon |
| BECK/ARNLEY | 2060002 | 🇺🇸 US 🇨🇦 CA | Negative | View on Amazon |
| DORMAN | 926515 | 🇺🇸 US 🇨🇦 CA | Positive Terminal | View on Amazon |
This table covers the terminals and clamps that connect cables to the battery posts.
5 Battery Terminal parts for the 2018 Toyota Corolla Im come from 4 brands — BECK/ARNLEY, STANDARD MOTOR PRODUCTS, AUTOTECNICA and 1 other brand. The "Popular" part is STANDARD MOTOR PRODUCTS BP100P.
This group includes STANDARD MOTOR PRODUCTS BP100P, AUTOTECNICA TY1318200 and BECK/ARNLEY 2060001 and the remaining parts above.
Fuse
10 Amp
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BUSSMANN | ATM10LP | 🇺🇸 US 🇨🇦 CA | Blade FuseLow Profile | View on Amazon |
120 Amp
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BUSSMANN | FLM120 | 🇺🇸 US 🇨🇦 CA | Blade FuseFLM Series | View on Amazon |
140 Amp
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BUSSMANN | FLM140 | 🇺🇸 US 🇨🇦 CA | Blade Fuse140 Amps | View on Amazon |
15 Amp
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BUSSMANN | ATM15LP | 🇺🇸 US 🇨🇦 CA | Blade FuseLow Profile | View on Amazon |
20 Amp
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BUSSMANN | ATM20LP | 🇺🇸 US 🇨🇦 CA | Blade FuseLow Profile | View on Amazon |
25 Amp
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BUSSMANN | ATM25LP | 🇺🇸 US 🇨🇦 CA | Blade FuseLow Profile | View on Amazon |
30 Amp
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BUSSMANN Popular | FMX30LP | 🇺🇸 US 🇨🇦 CA | 30 AmpsFMX Series | View on Amazon |
| BUSSMANN | ATM30LP | 🇺🇸 US 🇨🇦 CA | Blade FuseLow Profile | View on Amazon |
40 Amp
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BUSSMANN Popular | FMX40LP | 🇺🇸 US 🇨🇦 CA | 40 AmpFMX Series | View on Amazon |
5 Amp
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BUSSMANN | ATM5LP | 🇺🇸 US 🇨🇦 CA | Blade FuseLow Profile | View on Amazon |
50 Amp
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BUSSMANN | FMX50LP | 🇺🇸 US 🇨🇦 CA | 50 AmpsFMX Series | View on Amazon |
7.5 Amp
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BUSSMANN | ATM712LP | 🇺🇸 US 🇨🇦 CA | Blade FuseLow Profile | View on Amazon |
80 Amp
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BUSSMANN Popular | FLM80 | 🇺🇸 US 🇨🇦 CA | Blade Fuse80 Amps | 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.
13 Fuse parts for the 2018 Toyota Corolla Im come from BUSSMANN. The "Popular" part is BUSSMANN FMX30LP.
In the 10 Amp grade, BUSSMANN supplies 1 part: grouped under the catalog's "10 Amp" designation — the notes column spells out what sets them apart. A representative part number is BUSSMANN ATM10LP.
In the 120 Amp grade, BUSSMANN supplies 1 part: grouped under the catalog's "120 Amp" designation — the notes column spells out what sets them apart. A representative part number is BUSSMANN FLM120.
In the 140 Amp grade, BUSSMANN supplies 1 part: grouped under the catalog's "140 Amp" designation — the notes column spells out what sets them apart. A representative part number is BUSSMANN FLM140.
The 15 Amp section lists 1 option from BUSSMANN — grouped under the catalog's "15 Amp" designation — the notes column spells out what sets them apart. BUSSMANN ATM15LP is listed in this group.
The 20 Amp section lists 1 option from BUSSMANN — grouped under the catalog's "20 Amp" designation — the notes column spells out what sets them apart. BUSSMANN ATM20LP is listed in this group.
In the 25 Amp grade, BUSSMANN supplies 1 part: grouped under the catalog's "25 Amp" designation — the notes column spells out what sets them apart. A representative part number is BUSSMANN ATM25LP.
In the 30 Amp grade, BUSSMANN supplies 2 parts: grouped under the catalog's "30 Amp" designation — the notes column spells out what sets them apart. A representative part number is BUSSMANN FMX30LP.
The 40 Amp section lists 1 option from BUSSMANN — grouped under the catalog's "40 Amp" designation — the notes column spells out what sets them apart. BUSSMANN FMX40LP is listed in this group.
In the 5 Amp grade, BUSSMANN supplies 1 part: grouped under the catalog's "5 Amp" designation — the notes column spells out what sets them apart. A representative part number is BUSSMANN ATM5LP.
In the 50 Amp grade, BUSSMANN supplies 1 part: grouped under the catalog's "50 Amp" designation — the notes column spells out what sets them apart. A representative part number is BUSSMANN FMX50LP.
The 7.5 Amp section lists 1 option from BUSSMANN — grouped under the catalog's "7.5 Amp" designation — the notes column spells out what sets them apart. BUSSMANN ATM712LP is listed in this group.
The 80 Amp section lists 1 option from BUSSMANN — grouped under the catalog's "80 Amp" designation — the notes column spells out what sets them apart. BUSSMANN FLM80 is listed in this group.
Keyless Entry Remote
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 99711ST | 🇺🇸 US 🇨🇦 CA | Requires Locksmith Or Additional Scan Tool To Program | View on Amazon |
This table covers the key fobs that lock, unlock and start the vehicle.
One part is listed for the 2018 Toyota Corolla Im — DORMAN 99711ST.
Speed Sensor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ULTRA-POWER Popular | SC658 | 🇺🇸 US 🇨🇦 CA | Vehicle Speed | View on Amazon |
| BECK/ARNLEY | 0900004 | 🇺🇸 US 🇨🇦 CA | Transmission Code K313Input, NIN | View on Amazon |
| HOLSTEIN | 2VSS0532 | 🇺🇸 US 🇨🇦 CA | Vehicle Speed | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular | SC658 | 🇺🇸 US 🇨🇦 CA | Vehicle Speed | View on Amazon |
| AISIN | RST0101 | 🇺🇸 US 🇨🇦 CA | Sensor # 1Revolution Sensor | View on Amazon |
| AISIN | RST0021 | 🇺🇸 US 🇨🇦 CA | Sensor # 3Revolution Sensor | 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.
6 Speed Sensor parts for the 2018 Toyota Corolla Im come from 5 brands — AISIN, ULTRA-POWER, BECK/ARNLEY and 2 other brands. The "Popular" part is ULTRA-POWER SC658.
The Economy section lists 3 options from ULTRA-POWER, BECK/ARNLEY and HOLSTEIN — the catalog's value-priced group. ULTRA-POWER SC658 is listed in this group.
In the Standard Replacement grade, AISIN and STANDARD MOTOR PRODUCTS supply 3 parts: built to original-equipment specification. A representative part number is STANDARD MOTOR PRODUCTS SC658.
Listed part numbers: ULTRA-POWER SC658, BECK/ARNLEY 0900004 and HOLSTEIN 2VSS0532, plus the other parts above.
Starter Motor
New
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TYC Popular | 116373 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| ULTRA-POWER Popular | 16373N | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WAI GLOBAL | 16373N | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Remanufactured
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO | 3362271A | 🇺🇸 US 🇨🇦 CA | GoldRemanufactured | View on Amazon |
| FVP | 19573 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| PURE ENERGY | 19573 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| REMY | 16277 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| TERREPOWER | 52072 | 🇺🇸 US 🇨🇦 CA | 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.
8 Starter Motor parts are listed for the 2018 Toyota Corolla Im, from TYC, ULTRA-POWER, WAI GLOBAL and 5 other brands. TYC 116373 carries the "Popular" badge.
New: 3 parts, from TYC, ULTRA-POWER and WAI GLOBAL. A representative part number is TYC 116373.
Remanufactured: 5 parts, from ACDELCO, FVP, PURE ENERGY and 2 other brands. A representative part number is ACDELCO 3362271A.
Part numbers include TYC 116373 and ULTRA-POWER 16373N, among others listed above.
Buying Electrical Parts for a 2018 Toyota Corolla Im
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 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: Fuse and Alternator / Generator .
Frequently Asked Questions
How many electrical parts fit the 2018 Toyota Corolla Im?
Our catalog currently lists 54 electrical parts for the 2018 Toyota Corolla Im across 9 subcategories and 23 brands, covering the 1.8L L4 engine. Each part is matched to the engine(s) it fits.
What are the signs of electrical problems on a 2018 Toyota Corolla Im?
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 2018 Toyota Corolla Im 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 2018 Toyota Corolla Im?
Every part on this page is matched to the 1.8L L4 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 2018 Toyota Corolla Im
Electrical Parts for Other Toyota Corolla Im Years
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