The 2021 Acura TLX has 27 electrical parts with verified fitment on this page — 6 part types and 16 brands, covering both the 2.0L L4 Turbocharged and the 3.0L V6 Turbocharged. Each part includes a manufacturer part number and application notes.
The electrical system on the 2021 Acura TLX covers charging, starting and the sensors and modules the vehicle relies on, from alternator and starter to oxygen sensors. The largest groups are Battery (7 parts), Starter Motor (6 parts) and Alternator / Generator (4 parts). The other 3 part types cover the remaining 10 parts.
The 2021 Acura TLX was sold with both the 2.0L L4 Turbocharged and the 3.0L V6 Turbocharged. 13 parts fit every engine; the other 14 are engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2021 Acura TLX electrical parts are FVP (5 parts), PURE ENERGY (4 parts) and CONTINENTAL (2 parts), plus 13 more brands. Quality grades include AGM, Standard Replacement and New.
2 parts on this 2021 Acura TLX page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including DEKA 9A94R (Battery) and FVP P94RAGM (Battery). Click any part number to see every vehicle that part fits.
Alternator / Generator
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP Fits: 2.0L L4 Turbocharged | 11128 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Remanufactured | View on Amazon |
| FVP Fits: 3.0L V6 Turbocharged | 10496 | 🇺🇸 US | Remanufactured | View on Amazon |
| PURE ENERGY Fits: 2.0L L4 Turbocharged | 11128 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Remanufactured | View on Amazon |
| PURE ENERGY Fits: 3.0L V6 Turbocharged | 10496 | 🇺🇸 US | 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.
4 Alternator / Generator parts are listed for the 2021 Acura TLX, from FVP and PURE ENERGY.
Part numbers include FVP 11128 and FVP 10496, among others listed above.
Alternator / Generator Pulley
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CONTINENTAL Fits: 2.0L L4 Turbocharged | 49999 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| CONTINENTAL Fits: 3.0L V6 Turbocharged | 48717 | 🇺🇸 US | View on Amazon | |
| LITENS Fits: 2.0L L4 Turbocharged | 920087A | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| LITENS Fits: 3.0L V6 Turbocharged | 920149A | 🇺🇸 US | 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.
4 Alternator / Generator Pulley parts for the 2021 Acura TLX come from 2 brands — CONTINENTAL and LITENS.
Part numbers include CONTINENTAL 49999, CONTINENTAL 48717 and LITENS 920087A, among others listed above.
Battery
AGM (Extended Life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DEKA Popular Fits: all 2021 TLX engines | 9A94R | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | IntimidatorAGM | View on Amazon |
| FVP Popular Fits: all 2021 TLX engines | P94RAGM | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Platinum AGMBCI Group: 94R | View on Amazon |
| ACDELCO Fits: all 2021 TLX engines | 94RAGMHR | 🇺🇸 US 🇨🇦 CA | High ReserveAGM | View on Amazon |
| ACDELCO Fits: all 2021 TLX engines | 94RAGM | 🇺🇸 US 🇨🇦 CA | AGMBCI Group: 94R | View on Amazon |
| BOSCH Fits: all 2021 TLX engines | S6587B | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | AGMAGM | View on Amazon |
| P1MAX Fits: all 2021 TLX engines | PMAGMH794R | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | BCI Group 94R AGM800 CCA | View on Amazon |
Performance AGM (Extended Life + Increased Power)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FULLRIVER Fits: all 2021 TLX engines | FT85094R | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | BCI Group 94R(Length X Width X Height) 12.36 In x 6.85 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.
7 Battery parts for the 2021 Acura TLX come from 6 brands — ACDELCO, DEKA, FVP and 3 other brands. The "Popular" part is DEKA 9A94R. Every part fits both the 2.0L L4 Turbocharged and the 3.0L V6 Turbocharged.
In the AGM (Extended Life) grade, ACDELCO, DEKA, FVP and 2 other brands supply 6 parts: grouped under the catalog's "AGM (Extended Life)" designation — the notes column spells out what sets them apart. A representative part number is DEKA 9A94R.
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 FT85094R.
This group includes DEKA 9A94R, FVP P94RAGM and ACDELCO 94RAGMHR and the remaining parts above.
Parking Aid Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TECHPRO Fits: all 2021 TLX engines | HO1075104 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Customer Paints to Match | View on Amazon |
| TECHPRO Fits: all 2021 TLX engines | HO1175100 | 🇺🇸 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.
TECHPRO supplies both parts for the 2021 Acura TLX. All of them fit every engine offered in the 2021 TLX.
Part numbers include TECHPRO HO1075104 and TECHPRO HO1175100.
Speed Sensor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BECK/ARNLEY Fits: all 2021 TLX engines | 0900045 | 🇺🇸 US 🇨🇦 CA | Fits Base ModelTRANSMISSION | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DELPHI Fits: all 2021 TLX engines | SS12401 | 🇺🇸 US 🇨🇦 CA | Countershaft Speed Sensor | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 2021 TLX engines | SC825 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Located on TransmissionVehicle Speed | View on Amazon |
| WALKER PRODUCTS Fits: all 2021 TLX engines | 2401305 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Transmission SpeedMainshaft Speed 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.
4 Speed Sensor parts for the 2021 Acura TLX come from 4 brands — BECK/ARNLEY, DELPHI, STANDARD MOTOR PRODUCTS and 1 other brand. Every part fits both the 2.0L L4 Turbocharged and the 3.0L V6 Turbocharged.
The Economy section lists 1 option from BECK/ARNLEY — the catalog's value-priced group. BECK/ARNLEY 0900045 is listed in this group.
In the Standard Replacement grade, DELPHI, STANDARD MOTOR PRODUCTS and WALKER PRODUCTS supply 3 parts: built to original-equipment specification. A representative part number is DELPHI SS12401.
This group includes BECK/ARNLEY 0900045, DELPHI SS12401 and STANDARD MOTOR PRODUCTS SC825 and the remaining parts above.
Starter Motor
New
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TYC Fits: 2.0L L4 Turbocharged | 119353 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| WAI GLOBAL Fits: 2.0L L4 Turbocharged | 19353N | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
Remanufactured
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PURE ENERGY Fits: 2.0L L4 Turbocharged | 12935 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Remanufactured | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP Fits: 2.0L L4 Turbocharged | 12935 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Remanufactured | View on Amazon |
| FVP Fits: 3.0L V6 Turbocharged | 12908 | 🇺🇸 US | Remanufactured | View on Amazon |
| PURE ENERGY Fits: 3.0L V6 Turbocharged | 12908 | 🇺🇸 US | 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.
6 Starter Motor parts are listed for the 2021 Acura TLX, from PURE ENERGY, FVP, TYC and 1 other brand.
In the New grade, TYC and WAI GLOBAL supply 2 parts: brand-new units rather than rebuilt ones. A representative part number is TYC 119353.
In the Remanufactured grade, PURE ENERGY supplies 1 part: factory-rebuilt units with new wear components. A representative part number is PURE ENERGY 12935.
3 ungrouped parts are not assigned to a grade, with the same engine-level match.
This group includes TYC 119353, WAI GLOBAL 19353N and PURE ENERGY 12935 and the remaining parts above.
Buying Electrical Parts for a 2021 Acura TLX
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: Battery and Starter Motor .
Frequently Asked Questions
How many electrical parts fit the 2021 Acura TLX?
Our catalog currently lists 27 electrical parts for the 2021 Acura TLX across 6 subcategories and 16 brands, covering both the 2.0L L4 Turbocharged and the 3.0L V6 Turbocharged. Each part is matched to the engine(s) it fits.
Do electrical parts differ between 2021 Acura TLX engines?
Some do. 13 parts fit every engine; the other 14 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 2021 Acura TLX?
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 Acura TLX 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 Acura TLX?
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 2021 Acura TLX
Electrical Parts for Other Acura TLX 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.