Toyota Tacoma tail light bulb sizes depend on model year and rear-light function. For factory U.S.-market trucks, 2016–2023 models use 7443 bulbs in both the stop/tail and tail/rear-turn positions, with W16W/921-type reverse lighting. For 2005–2008 trucks, the common rear combination is 3157 stop/tail, 3157A rear turn, and 921 reverse. The 2009–2011 stop/tail lamps are factory LED, while 2012–2015 trucks can have either 3157KX bulb-type stop/tail lamps or factory LED units. First-generation 2001–2004 trucks use 1157 stop/tail, 1156 rear turn, and 921 reverse bulbs. Factory 2024–2026 rear lamps are LED assemblies rather than normal service bulbs.
Last updated: September 19, 2026 — bulb-year splits, fourth-generation LED service information, FAQ, sources, and schema were rechecked.
Quick Answer
For 2016–2023 Tacomas, Toyota lists 7443 for both rear combination-light positions: stop/tail/rear side marker and tail/rear turn/rear side marker. Reverse is W16W, commonly cataloged as a 921-family replacement. For 2005–2008, use 3157 stop/tail, 3157A rear turn, and 921 reverse. For 2001–2004, use 1157 stop/tail, 1156 rear turn, and 921 reverse. Later second-generation trucks include factory LED stop/tail variations, and 2024–2026 factory rear lamps are LED assemblies.
Key Takeaways
- Do not use a front-turn-signal bulb listing for the rear. On 2016–2023 trucks, the rear turn position is 7443 even though some front turn configurations use 7440-family bulbs.
- 2009–2011 factory stop/tail and rear side-marker lamps are LED assemblies; the replaceable rear turn remains 3157A and reverse remains 921.
- 2012–2015 trucks may have 3157KX bulb-type stop/tail lamps or factory LED stop/tail lamps. Rear turn is 3157A and reverse is 921.
- 2001–2004 trucks use 1157 stop/tail and 1156 rear turn bulbs, not the 3157/3157A family used on later trucks.
- Factory 2024–2026 rear lamps are LED assemblies. Do not order older-generation wedge bulbs for those positions.
- After any repair, test tail, brake, turn, hazard, reverse, license-plate, and high-mounted stop-light functions before driving.
At a Glance
| First check | Model year, failed lamp function, original bulb marking, and whether the housing is factory or aftermarket |
| Bulb-type rear lamps | Common on 2001–2008 and 2016–2023; selected 2012–2015 trucks also use bulb-type stop/tail lamps |
| Factory LED exceptions | 2009–2011 stop/tail lamps; some 2012–2015 stop/tail lamps; high-mounted stop lamps with cargo-lamp assemblies on some 2016–2023 trucks; factory rear lamps on 2024–2026 trucks |
| Typical tools | 10 mm socket or Phillips screwdriver depending on generation, gloves, clean cloth, and optional trim-safe tool |
Toyota Tacoma Tail Light Bulb Size Chart by Year
This chart covers common factory U.S.-market rear-light applications from 2001 through 2026. The important split is not only the Tacoma generation: Toyota changed some second-generation stop/tail lamps from replaceable bulbs to LEDs, then returned to bulb-type and LED variants before the third generation. Always compare the chart with the installed housing and your exact owner’s manual.
Fitment rule: Match the exact light function, not just a bulb that looks similar. The original bulb marking, base, contacts, color, socket shape, and housing type should agree before installation.
| Model years | Stop / tail | Rear turn signal | Reverse | CHMSL / third brake | License plate | Important note |
|---|---|---|---|---|---|---|
| 2024–2026 | Factory LED assembly | Factory LED assembly | Factory LED assembly | Factory LED assembly | Factory LED | Toyota’s fourth-generation manuals direct LED-light service to a Toyota dealer rather than listing rear replacement bulbs. |
| 2016–2023 | 7443 | 7443 | W16W; commonly cataloged as 921 | 168 without cargo lamp; LED with cargo-lamp assembly | W5W | Two different rear combination positions use 7443: one for stop/tail and one for tail/rear turn. |
| 2012–2015 | 3157KX on bulb-type lamps; factory LED on LED-equipped lamps | 3157A | 921 | 168 | 168 | Check whether the installed stop/tail unit is bulb type or factory LED before ordering. |
| 2009–2011 | Factory LED | 3157A | 921 | 168 | 168 | Toyota’s manuals identify stop/tail and rear side-marker lamps as LEDs serviced as lamp units. |
| 2005–2008 | 3157 | 3157A | 921 | 168 | 168 | The rear turn bulb is 3157A, not 3156A. |
| 2001–2004 | 1157 | 1156 | 921 | 168 | 194 | First-generation rear bulbs use the 1156/1157 bayonet-base family rather than the later 3157 family. |
Aftermarket housings can use different sockets, built-in LED boards, or conversion harnesses. If the truck no longer has its factory rear lamp, follow the housing manufacturer’s marking and wiring instructions instead of applying this chart automatically.
Which Tacoma Rear Light Are You Replacing?
A Tacoma can have several separate rear-light functions in one housing. Identifying the failed function first prevents the common mistake of ordering the right bulb family for the wrong socket.
- Tail or running light: Glows at lower intensity when the parking or headlamps are on.
- Brake or stop light: Glows more brightly when you press the brake pedal.
- Rear turn signal: Flashes on one side when you signal and on both sides with the hazard lights.
- Reverse light: Produces white light when the transmission is in reverse.
- CHMSL: The center high-mounted stop lamp above the bed or within the rear cab-lamp assembly.
- Rear side marker: Helps mark the rear side of the truck at night and may share a bulb with another rear function.
- License-plate light: Illuminates the rear license plate.
Combination lamps can share one bulb across two or three functions. For example, Toyota’s 2016–2023 manuals list one 7443 position as stop/tail/rear side marker and another 7443 position as tail/rear turn/rear side marker. That is why a simple “brake bulb versus turn bulb” chart can be misleading.
Do 2024–2026 Toyota Tacomas Have Replaceable Rear Bulbs?
For factory fourth-generation 2024–2026 Tacomas, Toyota’s owner-manual lighting sections identify the rear tail, stop, back-up, rear turn, high-mounted stop/cargo, and license-plate lights as LED lighting. Toyota directs owners to dealer service if those LEDs fail rather than listing conventional rear replacement-bulb numbers. The normal bulb-replacement procedure in these manuals applies to the bulb-type front turn/parking light on trucks equipped that way.
Toyota introduced the redesigned fourth-generation Tacoma for the 2024 model year. That redesign is the break point: do not carry a 2016–2023 7443 or 921 rear-bulb chart into a 2024–2026 truck. Use the exact model-year manual and VIN-specific parts information when a complete lamp needs replacement.
Warning: Do not cut open or modify a factory-sealed 2024–2026 rear LED lamp to install an older-generation wedge bulb. A failed factory LED rear light should be diagnosed and serviced as the correct assembly or approved component.
What Rear Bulbs Does a 2016–2023 Tacoma Use?
For factory bulb-type rear combination lamps, Toyota lists 7443 in both primary rear combination positions. One 7443 handles stop/tail/rear side-marker functions; the other handles tail/rear turn/rear side-marker functions. Toyota lists the back-up light as W16W; parts catalogs commonly cross-reference that position to the 921 family.
7443 Stop/Tail and Rear-Turn Positions
The 7443 is a dual-intensity T20-style wedge bulb. On these Tacomas, do not assume the rear turn signal needs a 7440 just because 7440-family bulbs appear in some front turn-signal listings. Toyota’s rear-light table specifies 7443 for the tail/rear-turn/rear-side-marker position.
Why 7440A Is Not the Factory Rear-Turn Answer Here
A 7440 is a single-intensity bulb family and is common in many automotive signal applications. However, the verified 2016–2023 Tacoma rear combination-light position is a dual-function 7443 circuit. Match the original bulb and socket instead of substituting a 7440/7440A based on shape.
W16W / 921 Reverse-Light Position
Toyota’s later third-generation manuals identify the back-up lamp as W16W. U.S. replacement catalogs commonly list 921 for this position. Whichever labeling your supplier uses, confirm the base, wattage specification, and original bulb marking before installation.
Third-Brake-Light Variation
Toyota lists a 168 high-mounted stop-light bulb for 2016–2023 trucks without a cargo lamp. Trucks with the cargo-lamp-style high-mounted assembly use an LED service arrangement instead. Check the cab-lamp assembly before buying a 168.
What Rear Bulbs Do 2009–2015 Tacomas Use?
2012–2015: 3157KX or LED Stop/Tail, 3157A Turn, 921 Reverse
Toyota’s 2012–2015 documentation separates bulb-type stop/tail lamps from LED-equipped stop/tail lamps. On bulb-type assemblies, the stop/tail and rear side-marker position is listed as 3157KX. The rear turn signal is 3157A, the back-up light is 921, and the license-plate and high-mounted stop lights are 168.
The practical buying rule is simple: inspect the stop/tail housing first. If it is an LED-equipped factory lamp, there is no normal 3157KX bulb to replace in that position.
2009–2011: Factory LED Stop/Tail, 3157A Turn, 921 Reverse
Toyota’s 2009, 2010, and 2011 owner manuals identify the stop/tail and rear side-marker lights as LED units serviced through the lamp assembly. The replaceable rear turn signal is 3157A; reverse is 921; license-plate and high-mounted stop-light positions use 168.
This year split matters because a generic “2005–2015 = 3157 stop/tail” chart incorrectly tells 2009–2011 owners to buy a bulb for a factory LED stop/tail position.
What Rear Bulbs Do 2005–2008 Tacomas Use?
For 2005–2008 factory rear combination lamps, Toyota lists 3157 for stop/tail/rear side marker, 3157A for the amber rear turn signal, 921 for reverse, and 168 for both the license-plate light and high-mounted stop light.
3157 Stop/Tail Position
The 3157 is a dual-intensity wedge bulb. After replacement, test both low-intensity tail output and brighter brake output. If one function works but the other does not, inspect both bulb circuits and the socket contacts.
3157A Rear-Turn Position
The factory rear turn signal in this year group is 3157A, an amber wedge bulb. That is different from a 3156A listing. Do not substitute by appearance alone; match the code printed on the removed bulb and the socket.
Aftermarket LED-Housing Exceptions
A previous owner may have installed an aftermarket LED housing that replaces one or more factory bulb sockets with an LED board, conversion harness, or load device. In that case, use the installed housing’s own service instructions instead of forcing a factory bulb into a non-factory socket.
Do not open a glued or permanently sealed housing merely to install a brighter light source. A poor reseal can allow water into the lamp and cause corrosion, fogging, or repeated electrical failure.
What Rear Bulbs Do 2001–2004 Tacomas Use?
Factory 2001–2004 Tacoma rear lighting uses the older bayonet-base family: 1157 for combined stop/tail, 1156 for the rear turn signal, 921 for reverse, 194 for license-plate lights, and 168 for the high-mounted stop light.
This is a major fitment break from the 2005 redesign. A 3157/3157A chart should not be carried backward to a 2001–2004 Tacoma.
Older trucks are also more likely to have replacement housings installed by a previous owner. Compare the actual bulb base, socket, and wiring before ordering parts for a non-original assembly.
How Do You Identify the Correct Tacoma Rear Bulb?
- Confirm the model year. Use the truck’s actual model year, not an assumed purchase or registration year.
- Identify the failed function. Test tail, brake, rear turn, hazard, reverse, CHMSL, side-marker, and plate lights separately.
- Check whether the light is bulb type or LED. A factory LED lamp may not have a normal service socket.
- Remove and read the original bulb. Match the printed or molded designation whenever a replaceable bulb is present.
- Compare the base and contacts. Check width, keyed tabs, contact arrangement, and socket fit.
- Match the color. An amber rear turn application needs the specified amber light source.
- Check the housing label. Aftermarket lamp manufacturers may specify a different bulb or no replaceable bulb at all.
- Confirm with Toyota documentation. Select the exact truck at the Toyota Manuals and Warranties portal.
Pro Tip: Photograph the original bulb, socket, and housing label before shopping. It gives you a reliable reference for the bulb code, contact pattern, and any aftermarket-housing information.
How Do You Replace a Toyota Tacoma Rear Light Bulb?
These steps apply to a conventional rear combination lamp with replaceable bulbs. They do not apply to factory 2024–2026 rear LED lamps or to any other integrated LED position that lacks a normal service bulb.
- Park safely. Switch off the engine and exterior lights, engage the parking brake, and remove the key or keep the smart key away from the truck.
- Open the tailgate. Locate the lamp fasteners along the inner edge of the rear housing.
- Remove the fasteners. Use the correct screwdriver or socket and support the housing.
- Pull the housing straight back. Release its locating pins without twisting the lamp sharply or pulling on the wiring.
- Find the failed position. Trace the bulb socket to the exact tail, stop, turn, or reverse function.
- Remove the socket. Rotate it counterclockwise and withdraw it gently.
- Remove the bulb. Pull a wedge bulb straight out; for an 1156/1157 bayonet bulb, follow the socket’s push-and-turn release.
- Inspect the socket. Look for corrosion, loose contacts, blackening, heat discoloration, or melted plastic.
- Install the matching replacement. Do not force a different base or wattage into the socket.
- Test before reassembly. Confirm every affected function, including hazards and both tail/brake intensity levels where applicable.
- Inspect the seal. Clean the sealing surface and replace a damaged gasket or socket seal.
- Reassemble the lamp. Seat the locating pins correctly and tighten the fasteners evenly without overtightening.
Warning: Do not drive with an inoperative required stop, turn, tail, or other safety lamp. Replacement lighting must preserve the required function, color, visibility, and performance under applicable law.
Safe LED and Plug-and-Play Rear-Light Upgrades
An LED retrofit can illuminate faster and draw less current than a filament bulb, but socket fit alone does not prove that the replacement will work correctly in the Tacoma’s circuit or reflector. The replacement still has to preserve the lamp’s signaling function and required color.
Match the Original Bulb Code and Function
Use the same service-bulb family required by the factory socket. Do not replace a 7443 dual-function position with a 7440 simply because both use a T20-style shape, and do not replace a 3157A rear-turn position with a different base merely because it can be made to fit.
Choose the Correct Signal Color
Rear turn, stop, tail, reverse, and license-plate lamps have different color requirements. Use a replacement designed to produce the required color through the installed lens rather than relying on a visually similar white LED behind every lens.
Check Polarity and Clearance
Some LED retrofits are polarity-sensitive. If a compatible wedge LED does not illuminate, switch the circuit off and follow the manufacturer’s polarity instructions. Also make sure the heat sink, fan, or body clears the housing and does not interfere with the socket seal.
Prevent Hyperflash Safely
Turn-signal circuits can interpret the lower current draw of some LEDs as a failed bulb and flash rapidly. First verify that every signal lamp works and that the replacement is correct for the circuit. Then use a vehicle-compatible electronic solution or properly engineered load device if the retrofit manufacturer requires one.
External load resistors can become very hot. If a manufacturer-specified resistor is used, mount it exactly as directed on a heat-resistant surface away from plastic, wiring insulation, paint, and weather seals.
Avoid Overheating and Socket Damage
Do not install a higher-wattage filament bulb to gain brightness. Extra heat can deform a socket, damage a reflector, or discolor a lens. With LED retrofits, make sure cooling hardware fits without preventing the housing or socket from sealing correctly.
Federal Motor Vehicle Safety Standard No. 108 covers original and replacement lamps, reflective devices, and associated equipment. State requirements can add their own rules, so a road-use retrofit should preserve the required lighting function rather than merely produce more light.
1156 vs. 1157, 3157A/3157KX, 7443, and 921
| Bulb | Basic type | Verified Tacoma rear use | Fitment caution |
|---|---|---|---|
| 1156 | Single-filament bayonet | 2001–2004 rear turn signal | Do not substitute an 1157; the base contacts and function differ. |
| 1157 | Dual-filament bayonet | 2001–2004 stop/tail | Both tail and brake functions must work after installation. |
| 3157A | Amber dual-filament wedge | 2005–2015 rear turn signal | Do not replace it with 3156A solely because both are amber wedge bulbs. |
| 3157 / 3157KX | Dual-filament wedge family | 3157 on 2005–2008 stop/tail; 3157KX on 2012–2015 bulb-type stop/tail | 2009–2011 and some 2012–2015 trucks use factory LED stop/tail lamps instead. |
| 7443 | Dual-intensity T20-style wedge | 2016–2023 stop/tail and tail/rear-turn combination positions | A 7440-family bulb is not the verified factory rear-turn substitute for this application. |
| 921 / W16W | Single-intensity T15-style wedge family | Reverse-light application across 2001–2023; later Toyota manuals use the W16W designation | Match the original marking and specified wattage rather than relying only on catalog aliases. |
Similar-looking bulbs are not automatically interchangeable. Never force a bulb into a socket, trim locating tabs, bridge contacts, or increase wattage to make an incompatible part work.
Troubleshooting Tacoma Rear-Light Problems
| Symptom | Likely causes | What to check |
|---|---|---|
| One bulb-type lamp is out | Failed bulb, poor contact, corrosion, or LED-retrofit polarity issue | Original bulb code, filament/LED condition, socket tension, corrosion, and polarity instructions |
| Factory LED function is out | Lamp/module, wiring, connector, or control fault | Connector power/ground and the model-specific service procedure; do not assume there is a hidden replaceable bulb |
| Both sides are out | Fuse, shared ground, switch, wiring, or control-circuit fault | Applicable fuse, ground points, connector voltage, and wiring diagram |
| Turn signal flashes rapidly | Failed signal lamp or low-current LED retrofit | Every turn-signal function, correct bulb code, LED compatibility, and any required load solution |
| Tail works but brake does not | Failed high-output filament/circuit, wrong bulb, or socket contact problem | Correct dual-function bulb or LED assembly and both circuit contacts |
| Bulb is dim | Poor ground, corrosion, low voltage, incorrect bulb, or weak retrofit optics | Voltage drop, ground resistance, socket condition, and bulb specification |
| Socket is melted | Wrong wattage, loose contact, corrosion, or poor-quality retrofit | Replace damaged parts and correct the cause before installing another bulb |
| Water or fog is inside | Damaged gasket, cracked lens, blocked vent, or poor housing seal | Housing cracks, socket seal, gasket, vent, and mounting surface |
If a fuse blows again immediately, do not install a larger fuse. A repeated failure can indicate a shorted wire, damaged socket, pinched harness, or internally failed aftermarket assembly. Trace and repair the fault first.
Related Guides
Frequently Asked Questions
What size tail light bulb does a Toyota Tacoma use?
It depends on the year. Factory 2016–2023 trucks use 7443 in both main rear combination positions. 2005–2008 trucks use 3157 stop/tail and 3157A rear turn. 2009–2011 stop/tail lamps are factory LED, while 2012–2015 can use 3157KX bulb-type stop/tail lamps or factory LEDs. 2001–2004 trucks use 1157 stop/tail and 1156 rear turn. Factory 2024–2026 rear lamps are LED assemblies.
What size bulb does a 2018 Tacoma brake light use?
A factory 2018 Tacoma uses a 7443 bulb in the stop/tail/rear-side-marker position. The separate tail/rear-turn/rear-side-marker position also uses 7443. The reverse light is W16W, commonly cataloged as a 921-family replacement.
What bulb does a 2016–2023 Tacoma rear turn signal use?
Toyota lists 7443 for the 2016–2023 tail/rear-turn/rear-side-marker position. A 7440-family bulb may appear in front-turn listings, but it is not the verified factory rear-turn bulb for this rear combination-light position.
What is the difference between a 7440 and 7443 bulb?
A 7440 is normally a single-intensity T20-style bulb, while a 7443 has separate high- and low-intensity circuits. Similar shape does not make them interchangeable. For 2016–2023 Tacoma rear combination lamps, Toyota specifies 7443.
Why does my Tacoma turn signal flash quickly after an LED upgrade?
The truck may interpret the LED’s lower current draw as a failed signal lamp. First confirm that every signal works and that the LED matches the original bulb function. Then use the retrofit manufacturer’s vehicle-compatible electronic solution or properly installed load device if required.
Can I replace a 2024–2026 Tacoma factory rear LED with a normal bulb?
No direct bulb swap is listed for the factory rear LED lamps. Toyota’s fourth-generation manuals treat those rear lights as LED units and direct service through the appropriate lamp or component rather than a conventional rear bulb socket.
What bulbs do 2001–2004 Tacoma tail lights use?
Factory 2001–2004 Tacomas use 1157 for stop/tail, 1156 for rear turn, 921 for reverse, 194 for license-plate lights, and 168 for the high-mounted stop light.
Conclusion
The correct Toyota Tacoma tail light bulb size changes at several important year breaks. Use 1157/1156/921 for the main 2001–2004 rear positions, 3157/3157A/921 for 2005–2008, factory LED stop/tail with 3157A/921 for 2009–2011, 3157KX-or-LED stop/tail with 3157A/921 for 2012–2015, and 7443/7443/W16W for the main 2016–2023 rear positions. Factory 2024–2026 rear lamps are LED assemblies.
Before ordering, verify the installed housing and original bulb marking. After installation, test every rear-light function and correct any rapid flashing, dim output, heat damage, moisture, or poor contact before returning to the road.
Sources
- Toyota Manuals and Warranties — official model-year manual lookup used to cross-check Tacoma lighting service information.
- Toyota 2024 Tacoma Manuals and Warranties — fourth-generation owner documentation.
- Toyota 2025 Tacoma Owner’s Manual (OM04011U) — official 2025 manual portal.
- Toyota 2026 Tacoma Owner’s Manual (OM04051U) — official 2026 digital manual.
- Toyota 2023 Tacoma Manuals and Warranties — third-generation owner documentation.
- 2015 Toyota Tacoma Owner’s Manual — bulb table showing 3157A rear turn, 3157KX bulb-type stop/tail, 921 reverse, and 168 plate/CHMSL.
- 2011 Toyota Tacoma Owner’s Manual — rear LED stop/tail service information plus 3157A, 921, and 168 bulb specifications.
- 2008 Toyota Tacoma Owner’s Manual — 3157 stop/tail, 3157A rear turn, 921 reverse, and 168 plate/CHMSL specifications.
- 2001 Toyota Tacoma Owner’s Manual — 1157 stop/tail, 1156 rear turn, 921 reverse, 194 plate, and 168 CHMSL specifications.
- 49 CFR §571.108 — U.S. requirements for original and replacement lamps, reflective devices, and associated equipment.
