The 2018 Acura MDX has 39 electrical parts with verified fitment on this page — 8 part types and 19 brands, covering both the 3.0L V6 ELECTRIC/GAS and the 3.5L V6. Each part includes a manufacturer part number and application notes.
On the 2018 Acura MDX, 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 Horn (14 parts), Battery (8 parts) and Parking Aid Sensor (4 parts). The other 5 part types cover the remaining 13 parts.
The 2018 Acura MDX was sold with both the 3.0L V6 ELECTRIC/GAS and the 3.5L V6. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
19 brands supply electrical parts for the 2018 Acura MDX, led by FIAMM (13 parts), STANDARD MOTOR PRODUCTS (5 parts) and DEKA (2 parts), plus 16 more brands. Quality grades include Standard Replacement, Accessory Replacement and AGM.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2018 Acura MDX. 5 parts have it, including DEKA 9A48 (Battery) and FIAMM 7210223 (Horn). Each part number opens a page with every vehicle that part fits.
Alternator / Generator
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DENSO Fits: 3.0L V6 ELECTRIC/GAS | 2101204 | 🇺🇸 US 🇨🇦 CA | Reman | 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.
This group shows a single part: DENSO 2101204.
Alternator / Generator End Bearing
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Fits: 3.0L V6 ELECTRIC/GAS | RB63032RS | 🇺🇸 US 🇨🇦 CA | with Mitsubishi AlternatorDrive End | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BCA Fits: 3.0L V6 ELECTRIC/GAS | NB303CC | 🇺🇸 US 🇨🇦 CA | with Mitsubishi AlternatorDrive End | View on Amazon |
| NATIONAL Fits: 3.0L V6 ELECTRIC/GAS | 303CC | 🇺🇸 US 🇨🇦 CA | with Mitsubishi AlternatorDrive End | View on Amazon |
This table covers the bearings in the alternator housing. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly.
3 Alternator / Generator End Bearing parts are listed for the 2018 Acura MDX, from WJB / INMOTION PARTS, BCA and NATIONAL.
In the Economy grade, WJB / INMOTION PARTS supplies 1 part: the catalog's value-priced group. A representative part number is WJB / INMOTION PARTS RB63032RS.
The Standard Replacement section lists 2 options from BCA and NATIONAL — built to original-equipment specification. BCA NB303CC is listed in this group.
Listed part numbers: WJB / INMOTION PARTS RB63032RS, BCA NB303CC and NATIONAL 303CC.
Battery
AGM (Extended Life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DEKA Popular Fits: 3.0L V6 ELECTRIC/GAS | 9A48 | 🇺🇸 US 🇨🇦 CA | IntimidatorAGM | View on Amazon |
| LUCAS Popular Fits: 3.0L V6 ELECTRIC/GAS | LBAGM004A | 🇺🇸 US 🇨🇦 CA | BCI Group: 48AGM | View on Amazon |
| ACDELCO Fits: 3.0L V6 ELECTRIC/GAS | 48AGM | 🇺🇸 US 🇨🇦 CA | AGMBCI Group: 48 | View on Amazon |
| ACDELCO Fits: 3.0L V6 ELECTRIC/GAS | 48AGMHR | 🇺🇸 US 🇨🇦 CA | High ReserveAGM | View on Amazon |
| DEKA Fits: 3.0L V6 ELECTRIC/GAS | 9A47 | 🇺🇸 US 🇨🇦 CA | IntimidatorAGM | View on Amazon |
| EXIDE Fits: 3.0L V6 ELECTRIC/GAS | MXH6L348 | 🇺🇸 US 🇨🇦 CA | Marathon MaxBCI Group 48 (H6) | View on Amazon |
| FVP Fits: 3.0L V6 ELECTRIC/GAS | P48AGM | 🇺🇸 US 🇨🇦 CA | Platinum AGMBCI Group: 48 | View on Amazon |
Performance AGM (Extended Life + Increased Power)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FULLRIVER Fits: 3.0L V6 ELECTRIC/GAS | FT68048 | 🇺🇸 US 🇨🇦 CA | BCI Group 48(Length X Width X Height) 10.94 In x 6.89 In x 7.48 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.
8 Battery parts are listed for the 2018 Acura MDX, from DEKA, ACDELCO, LUCAS and 3 other brands. DEKA 9A48 carries the "Popular" badge.
The AGM (Extended Life) section lists 7 options from DEKA, ACDELCO, LUCAS and 2 other brands — grouped under the catalog's "AGM (Extended Life)" designation — the notes column spells out what sets them apart. DEKA 9A48 is listed in this group.
The Performance AGM (Extended Life + Increased Power) section lists 1 option from FULLRIVER — grouped under the catalog's "Performance AGM (Extended Life + Increased Power)" designation — the notes column spells out what sets them apart. FULLRIVER FT68048 is listed in this group.
Part numbers include DEKA 9A48, LUCAS LBAGM004A and ACDELCO 48AGM, among others listed above.
Battery Current Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 3.0L V6 ELECTRIC/GAS | 010547781 | 🇺🇸 US 🇨🇦 CA | BoltedIntelligent Battery Sensor | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.0L V6 ELECTRIC/GAS | BSC149 | 🇺🇸 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.
2 Battery Current Sensor parts for the 2018 Acura MDX come from 2 brands — HELLA and STANDARD MOTOR PRODUCTS.
Part numbers include HELLA 010547781 and STANDARD MOTOR PRODUCTS BSC149.
Horn
Accessory Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FIAMM Popular Fits: 3.0L V6 ELECTRIC/GAS | 7210223 | 🇺🇸 US 🇨🇦 CA | Accessory HornFreeway Blaster | View on Amazon |
| FIAMM Fits: 3.0L V6 ELECTRIC/GAS | 7211223 | 🇺🇸 US 🇨🇦 CA | Accessory Horn (Louder)FWY Blaster | View on Amazon |
| FIAMM Fits: 3.0L V6 ELECTRIC/GAS | 72112 | 🇺🇸 US 🇨🇦 CA | Freeway BlasterAccessory Horn | View on Amazon |
| FIAMM Fits: 3.0L V6 ELECTRIC/GAS | 7410024 | 🇺🇸 US 🇨🇦 CA | Accessory HornEl Grande | View on Amazon |
| FIAMM Fits: 3.0L V6 ELECTRIC/GAS | 6602023 | 🇺🇸 US 🇨🇦 CA | Accessory HornRed | View on Amazon |
| FIAMM Fits: 3.0L V6 ELECTRIC/GAS | 6602523 | 🇺🇸 US 🇨🇦 CA | Accessory HornChrome | View on Amazon |
| FIAMM Fits: 3.0L V6 ELECTRIC/GAS | 6604523 | 🇺🇸 US 🇨🇦 CA | Ultimate Blast HornAccessory Horn | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FIAMM Popular Fits: 3.0L V6 ELECTRIC/GAS | 7201223 | 🇺🇸 US 🇨🇦 CA | OE Replacement Tone2 Terminal Connection (Cut off and reuse OE Connector) | View on Amazon |
| FIAMM Popular Fits: 3.0L V6 ELECTRIC/GAS | 7200223 | 🇺🇸 US 🇨🇦 CA | OE Replacement Tone2 Terminal Blade Connection (Cut off and reuse OE Connector) | View on Amazon |
| FIAMM Fits: 3.0L V6 ELECTRIC/GAS | 7421122 | 🇺🇸 US 🇨🇦 CA | OE Replacement Horn KitIncludes OE Connectors & L Bracket | View on Amazon |
| FIAMM Fits: 3.0L V6 ELECTRIC/GAS | 7421322 | 🇺🇸 US 🇨🇦 CA | OE Replacement Horn KitIncludes OE Connectors | View on Amazon |
| FIAMM Fits: 3.0L V6 ELECTRIC/GAS | 7250622 | 🇺🇸 US 🇨🇦 CA | OE Replacement Horn KitIncludes OE Connectors & L Bracket | View on Amazon |
| FIAMM Fits: 3.0L V6 ELECTRIC/GAS | 7250522 | 🇺🇸 US 🇨🇦 CA | OE Replacement Horn KitIncludes OE Connectors & L Bracket | View on Amazon |
| HELLA Fits: 3.0L V6 ELECTRIC/GAS | 011225891 | 🇺🇸 US 🇨🇦 CA | Hella OE-Connect Horn S77 SetFrequency Range: 350/420HZ | View on Amazon |
This table covers the horns mounted in the front of the vehicle.
14 Horn parts are listed for the 2018 Acura MDX, from FIAMM and HELLA. FIAMM 7210223 carries the "Popular" badge.
In the Accessory Replacement grade, FIAMM supplies 7 parts: grouped under the catalog's "Accessory Replacement" designation — the notes column spells out what sets them apart. A representative part number is FIAMM 7210223.
The Standard Replacement section: 7 options from FIAMM and HELLA. FIAMM 7201223 is listed in this group.
Parking Aid Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 3.0L V6 ELECTRIC/GAS | PPS303 | 🇺🇸 US 🇨🇦 CA | Rear Left | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.0L V6 ELECTRIC/GAS | PPS312 | 🇺🇸 US 🇨🇦 CA | Black | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.0L V6 ELECTRIC/GAS | PPS171 | 🇺🇸 US 🇨🇦 CA | Front Outer | View on Amazon |
| TECHPRO Fits: 3.0L V6 ELECTRIC/GAS | AC1075100 | 🇺🇸 US 🇨🇦 CA | 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.
4 Parking Aid Sensor parts for the 2018 Acura MDX come from 2 brands — STANDARD MOTOR PRODUCTS and TECHPRO.
Part numbers include STANDARD MOTOR PRODUCTS PPS303, STANDARD MOTOR PRODUCTS PPS312 and STANDARD MOTOR PRODUCTS PPS171, among others listed above.
Speed Sensor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN Fits: 3.0L V6 ELECTRIC/GAS | 2VSS0104 | 🇺🇸 US 🇨🇦 CA | Manufactured By ToyoVehicle Speed | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 3.0L V6 ELECTRIC/GAS | SC770 | 🇺🇸 US 🇨🇦 CA | Vehicle Speed | View on Amazon |
| WELLS Fits: 3.0L V6 ELECTRIC/GAS | 5S17132 | 🇺🇸 US 🇨🇦 CA | Transmission SpeedAutomatic Trans. | 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.
3 Speed Sensor parts are listed for the 2018 Acura MDX, from HOLSTEIN, STANDARD MOTOR PRODUCTS and WELLS.
Economy: 1 part, from HOLSTEIN. A representative part number is HOLSTEIN 2VSS0104.
The Standard Replacement section: 2 options from STANDARD MOTOR PRODUCTS and WELLS. STANDARD MOTOR PRODUCTS SC770 is listed in this group.
This group includes HOLSTEIN 2VSS0104, STANDARD MOTOR PRODUCTS SC770 and WELLS 5S17132.
Starter Motor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP Fits: 3.0L V6 ELECTRIC/GAS | 19169 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| PURE ENERGY Fits: 3.0L V6 ELECTRIC/GAS | 19169 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| REMY Fits: 3.0L V6 ELECTRIC/GAS | 16354 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| TERREPOWER Fits: 3.0L V6 ELECTRIC/GAS | 52122 | 🇺🇸 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.
4 Starter Motor parts for the 2018 Acura MDX come from 4 brands — FVP, PURE ENERGY, REMY and 1 other brand.
Listed part numbers: FVP 19169 and REMY 16354, plus the other parts above.
Buying Electrical Parts for a 2018 Acura MDX
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. Every electrical part here is 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: Horn and Battery .
Frequently Asked Questions
How many electrical parts fit the 2018 Acura MDX?
Our catalog currently lists 39 electrical parts for the 2018 Acura MDX across 8 subcategories and 19 brands, covering both the 3.0L V6 ELECTRIC/GAS and the 3.5L V6. Each part is matched to the engine(s) it fits.
Do electrical parts differ between 2018 Acura MDX engines?
Yes. Every electrical part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. 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 2018 Acura MDX?
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 Acura MDX 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 Acura MDX?
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 2018 Acura MDX
Electrical Parts for Other Acura MDX Years
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