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If you drive an Acura TLX, choosing the right fuel injector can make a noticeable difference in engine smoothness and drivability. You want components that deliver consistent spray patterns, tight tolerances, and long service life to avoid rough idle, hesitation, or excess emissions. This guide covers the top shortlisted fuel injectors for the Acura TLX and explains the criteria we used to evaluate them, including flow consistency and build quality. Read on to understand the practical tradeoffs and which factors matter most when selecting a replacement injector.
Looking for other parts? See all Acura TLX parts & accessories.
Top Picks at a Glance
| Best Overall The best all-around choice for most situations | Hsingach Set of 4 Fuel Injectors for Honda/Acura 2.4L (164505LAA01) |  |
| Best quality Built to a higher standard if you want something more solid | Sethparts K24GDI5LA High-Pressure Fuel Injectors, Set of 4 |  |
| Best Value The sweet spot between price and what you get | X AUTOHAUX Fuel Injector Set 16450-5LA-A01 — 4-pack for Acura TLX 2015–2017 |  |
| Best budget The cheapest option that still gets the job done reliably | Zxyculture Fuel Injector compatible with Acura TLX 2.4L (replacement for 164505LAA01) |  |
| Highest Rated A top-rated pick with lots of positive feedback | Amrxuts 16450-5LA-A01 6-Hole Fuel Injectors (4-Pack) |  |
| Most popular A crowd favorite that many people choose with confidence | MXQP Fuel Injectors Set of 6 Compatible with Acura 3.5L (16450R9PA01) |  |
| Best Seller A high-volume bestseller chosen again and again | yeedaky Fuel Injector Set (4) — Fit for Honda/Acura 2.4L 2013–2017 |  |
1. Hsingach Set of 4 Fuel Injectors for Honda/Acura 2.4L (164505LAA01)
| Manufacturer | Hsingach |
|---|---|
| Model | HS880115CH08 |
| OEM Part Number | 164505LAA01,FJ1208,160105LA305,164505A2A01,84512109 |
| Fitment | Compatible with 2.4L Honda Accord 2013-2017, CR-V 2015-2019, Acura ILX 2016-2022, TLX 2015-2020 |
| Quantity | Set of 4 |
These Hsingach fuel injectors are sold as a direct-replacement four-pack for 2.4L Honda and Acura engines and are intended to restore proper fuel delivery when originals fail. They arrive individually bagged with O-rings and basic installation instructions, and the listing says each injector is tested before shipment. In practice you would use them to replace worn or leaking injectors to clear misfires, reduce rough idle, and eliminate related check-engine codes. Notable features include a six-hole spray pattern claimed to match the original part and packaged spares for a straightforward swap. Buyers report a mix of outcomes: many find a clean fit and improved running condition while a minority experienced early failures or one bad unit in a set, which can require extra labor to fix. These injectors are a budget-conscious replacement with decent packaging and parts support, but quality control appears variable so expect to verify operation immediately after installation and keep receipts or spares handy.
Best for: Balanced all-round buyers who want an affordable, direct-replacement injector set to restore drivability and fix idle or misfire issues without paying for high-end performance parts.
Less Ideal for: Drivers seeking guaranteed long-term durability or performance upgrades should consider higher-tier branded or dealer supplied injectors and professional testing services instead.
- Sold as a complete set of four with O-rings and basic installation instructions
- Individually packaged injectors with apparent factory testing reduce obvious shipping damage
- Designed to match original six-hole spray pattern for comparable fuel delivery
- Includes extra O-rings and tidy packaging that helps protect parts during storage and transport
- Mixed reliability reports with some users receiving at least one failed injector in a set
- No explicit manufacturer warranty information provided in the listing
Verdict: A cost-efficient, drop-in injector set that restores fuel delivery for 2.4L Honda and Acura engines when you need an affordable OEM-style replacement.
2. Sethparts K24GDI5LA High-Pressure Fuel Injectors, Set of 4
| Compatible engine | 2.4L GDI K24 series |
|---|---|
| Quantity | Set of 4 |
| Manufacturer | Sethparts |
| Manufacturer part number | HONMPFI5LA |
These Sethparts K24GDI5LA injectors replace the factory fuel injectors on 2.4L GDI Acura TLX engines and are sold as a set of four. They are intended to restore proper spray pattern and fuel delivery after original injectors age or clog, which improves idle quality, throttle response, and fuel economy when installed correctly. The listing notes the injectors are tested and may contain a small amount of gasoline after testing, and recommends dielectric grease on O-rings to ease installation. Practical benefits include regaining lost engine smoothness and drivability without replacing the entire fuel system, plus the seller states lifetime after-sales support. Limitations are that these are aftermarket replacements rather than factory parts, so fit and long-term durability can vary and professional diagnosis is recommended before replacement. Buyers should verify confirmed fitment for their specific TLX year and have proper installation tools or shop service for safe high-pressure fuel system work.
Best for: Performance-oriented owners who want to restore or improve throttle response and fuel efficiency on a 2.4L Acura TLX without replacing the whole fuel system.
Less Ideal for: Drivers who prefer only factory-sourced parts or who plan to avoid any installation work should consider factory-quality replacements or professional supply channels instead.
- Sold as a matched set of four to ensure balanced fuel delivery across cylinders
- Marketed as tested prior to shipping which can reduce bench-time at installation
- Restores throttle response and can improve fuel economy on a 2.4L GDI TLX
- Recommended installation tips provided such as using dielectric grease on O-rings
- Aftermarket unit so long-term durability and exact OEM equivalence are not guaranteed
- Requires care and proper tools to install because it is a high-pressure GDI component
Verdict: A performance-focused aftermarket replacement set that can restore drivability on a 2.4L Acura TLX but may not match factory longevity exactly.
3. X AUTOHAUX Fuel Injector Set 16450-5LA-A01 — 4-pack for Acura TLX 2015–2017
| Fitment | Acura TLX 2015-2017 |
|---|---|
| OE numbers referenced | 16450-5LA-A01, 16010-5LA-306, 16010-5LA-305 |
| Orifice type | 6 Holes Disc |
| Voltage | DC 12V |
These X AUTOHAUX injectors are sold as a direct replacement for the Acura TLX 2015–2017 2.4L. They come as a matched four-pack with preinstalled O-rings and are intended to drop into the factory fuel rail without modification. The listing emphasizes matching coil impedance and flow rate to the original injectors, which helps preserve fueling balance and avoid wideband retunes in many cases. Practical features include a six-hole disc orifice for atomization and high-impedance coils for compatibility with factory wiring. Installation follows the factory sequence and is best handled by a professional to avoid leaks and to verify no additional tuning is required. Limits to consider are that these are aftermarket parts, so long-term durability and exact factory-fit tolerances can vary, and a professional inspection of related fuel-system components is recommended before installation. For owners wanting an economical, plug-and-play replacement that aims to match factory flow characteristics, this set is a usable value option for the TLX.
Best for: Practical optimizers who want a cost-conscious, functional replacement that preserves drivability and avoids unnecessary upgrades while keeping the TLX on the road.
Less Ideal for: Drivers seeking a lifetime OEM replacement, performance upgrades, or warranty-backed parts should consider factory-quality or dealer-sourced injectors instead.
- Sold as a matched four-pack to maintain consistent flow across cylinders.
- Preinstalled O-rings and factory-style electrical pinning for straightforward installation.
- High-impedance coils and flow rates advertised to match factory injectors, reducing the chance of fueling imbalance.
- Six-hole disc orifice design for improved fuel atomization and cold-start performance.
- Aftermarket component so long-term reliability and precision fit may differ from factory parts.
- May still require professional installation and verification of no leaks or fueling adjustments.
Verdict: A budget-friendly, flow-matched replacement for the Acura TLX 2.4L that aims to preserve factory fueling without costly upgrades.
4. Zxyculture Fuel Injector compatible with Acura TLX 2.4L (replacement for 164505LAA01)
| Compatible models | Acura TLX 2.4L 2015-2020 |
|---|---|
| Manufacturer part number | 164505LAA01 |
| Exterior | Stainless Steel |
This Zxyculture fuel injector is a budget-friendly, direct-replacement unit intended for the 2.4L Acura TLX. It installs using standard factory-style connectors so a competent DIYer or a technician can swap it in without special tools. In routine use it restores consistent fuel metering to help eliminate rough idle, hesitation, and poor throttle response — effects reported by owners after OEM injector wear. The listing emphasizes durable construction and optimized delivery for combustion efficiency, which should reduce carbon buildup and help emissions under typical driving conditions. As an aftermarket, low-cost option it is a practical way to repair a single failing injector without the expense of an OEM part. Limitations are that long-term durability and flow matching to remaining factory injectors can vary between aftermarket batches, so replacing injectors in matched sets or having flow-tested units is recommended for high-mileage engines seeking ideal balance.
Best for: Budget-conscious owners who want an affordable, do-it-yourself repair or an inexpensive replacement to restore drivability on a 2.4L Acura TLX.
Less Ideal for: Drivers seeking a guaranteed factory-quality, flow-matched overhaul for a high-mileage engine or performance builds should consider OEM or flow-tested injector sets instead.
- Designed to be a direct fit for the Acura TLX 2.4L for straightforward installation
- Uses standard electrical and fuel connections so no modifications are required
- Intended to restore accurate fuel delivery to correct idle and acceleration issues
- Lower-cost alternative to factory replacement for targeted repairs
- Aftermarket units may show variation in long-term durability and flow uniformity compared with factory-quality injectors
- Not sold as a matched, flow-tested set which can be important for high-mileage engines
Verdict: A cost-effective direct-replacement injector for Acura TLX 2.4L owners who need a quick, affordable repair but who may sacrifice factory-level flow matching and long-term parity.
5. Amrxuts 16450-5LA-A01 6-Hole Fuel Injectors (4-Pack)
| Fitment | 2015-2017 Acura TLX 2.4L (also fits certain 2013-2017 Honda Accord and 2015-2017 CR-V 2.4L) |
|---|---|
| Orifice Type | 6 Holes |
| Pin Count | 2-pin |
| Package | 4 fuel injectors |
These Amrxuts fuel injectors are an aftermarket direct-fit replacement offered as a four-pack designed for 2.4L Honda and Acura engines. They use a 6-hole orifice and a two-pin electrical connector, which helps atomize fuel for more even combustion and can reduce carbon buildup compared with worn injectors. Typical use is a like-for-like swap when an injector is leaking, fouled, or triggering a misfire code; installation follows the factory procedure and the parts are presented as plug-and-play. The practical benefits are improved idle smoothness and restored throttle response when original injectors have degraded, and the package includes four units to replace a whole bank at once. Limitations are that these are aftermarket parts with mixed fitment histories across suppliers, so buyers should verify part numbers and expect variation in long-term durability versus factory-quality injectors. There is also a one-year guarantee from the seller rather than a multi-year factory-backed warranty.
Best for: Reliability-focused buyers who prioritize restoring dependable engine operation with a budget-conscious direct replacement and want to address rough idle, misfire, or loss of power by replacing injectors as a preventative or corrective maintenance step.
Less Ideal for: Drivers seeking OEM factory-quality injectors with extended manufacturer warranties or those who want professional remanufactured injectors certified to specific OEM tolerances should consider other options.
- Direct-fit replacement for affected 2.4L Honda/Acura engines so installation follows factory routing
- 6-hole orifice design for finer fuel atomization and potentially cleaner combustion
- Sold as a four-piece set to replace all injectors on a bank at once
- Two-pin electrical connector matches factory wiring for plug-and-play swap
- Aftermarket construction means long-term durability may vary compared with factory-quality injectors
- Seller guarantee is limited to one year rather than a longer manufacturer warranty
Verdict: A cost-effective four-pack direct-fit aftermarket option to restore fuel delivery on the 2.4L TLX, but expect variable long-term durability compared with factory-quality injectors.
6. MXQP Fuel Injectors Set of 6 Compatible with Acura 3.5L (16450R9PA01)
| Manufacturer | MXQP |
|---|---|
| Part Number | 16450R9PA01 |
| Included Components | 6 pcs fuel injectors |
| Batteries Required? | No |
These injectors replace the factory units to restore consistent fuel delivery, smoother idling, and improved throttle response on compatible Acura 3.5L engines. Installation is a direct-fit process using the factory electrical connectors and is typically done during routine fuel-rail service or when diagnosing misfires and poor idle. The listing highlights composite construction and protected internal seals to resist corrosion and extend service life, and the pack includes six injectors so you can service all cylinders at once. Practical benefits include quicker troubleshooting and a one-stop replacement to avoid mixing old and new injectors. Limitations are that this is an aftermarket part that may not match OEM in long-term durability testing and buyers should verify the part number against their vehicle before ordering. No calibration tools are included, so expect to rely on the vehicle's existing fuel trim adaptation or have the system checked after installation.
Best for: Convenience-driven buyers who want a single-package replacement to quickly restore drivability on their Acura TLX without sourcing individual injectors.
Less Ideal for: Drivers seeking a long-term, factory-certified replacement or those wanting injector flow testing and matched-flow sets from a performance or OEM remanufacturer.
- Sold as a complete six-injector set for servicing all cylinders at once
- Direct-fit design that uses factory-style connectors for straightforward installation
- Composite construction and protected seals intended to reduce corrosion and extend service life
- Restores smoother idle and improved throttle response when replacing worn injectors
- Aftermarket unit that may not exactly match long-term durability of factory-quality injectors
- No calibration or installation hardware supplied beyond the injectors themselves
Verdict: A practical, complete six-injector aftermarket kit for quickly restoring fuel delivery on Acura 3.5L engines, best for owners who prioritize convenience over OEM-certified longevity.
7. yeedaky Fuel Injector Set (4) — Fit for Honda/Acura 2.4L 2013–2017
| Part numbers | FJ1208, 164505LAA01, 16450-5LA-A01 |
|---|---|
| Fitment years | 2013-2017 for 2.4L engines |
| Quantity | 4 pieces |
This four-piece fuel injector kit is designed as a direct replacement for the 2.4L Earth Dreams engines used in certain Honda and Acura models from 2013 through 2017. In practice it replaces worn injectors to restore the correct spray pattern and fuel metering that affect idle quality, cold starts, and overall drivability. The product is marketed as factory-style, so installation follows the original mounting and connector locations and is intended to be straightforward for a competent DIYer or a technician. Buyers will appreciate that the set addresses common symptoms of aged injectors such as rough idle and reduced fuel economy, and the listing emphasizes manufacturer support for fitment questions. Limitations include the usual need to replace single-use fuel fittings and seals during service and the absence of detailed flow-rate or electrical spec sheets on the product page, which means installers should verify compatibility with their vehicle controls before fitting.
Best for: A risk-averse mainstream buyer looking for a straightforward, factory-style replacement to restore reliable drivability and emissions performance on a 2.4L Acura TLX.
Less Ideal for: Performance tuners or shops seeking verified high-flow or matched-flow injectors for modified engines should consider purpose-built injector options with published specifications.
- Sold as a complete set of four to replace all injectors on the 2.4L engine at once
- Designed to match factory mounting and electrical connector locations for straightforward installation
- Addresses common injector-related symptoms like rough idle, cold-start hesitation, and reduced fuel economy
- No published flow-rate or impedance specifications on the product page to confirm exact match with vehicle fuel trim
- Installation typically requires replacing single-use fuel fittings and seals which are not included
- Limited public technical documentation beyond basic fitment claims
Verdict: A practical, factory-style four-injector replacement aimed at restoring stock drivability on 2.4L Acura TLX engines, but verify technical specs if you need exact flow matching.
Choosing the Right Acura TLX Fuel Injector: Key Factors to Consider
Flow Rate and Metering Accuracy
Consistent flow rate ensures each cylinder receives the correct amount of fuel under varying loads and RPMs. Variations in flow can cause imbalance between cylinders, resulting in rough idle, misfires, or uneven power delivery.
Look for injectors with documented flow specifications and tight tolerances. Better metering accuracy reduces the need for large ECU corrections and helps maintain efficient combustion across operating conditions.
Spray Pattern and Atomization
The injector's spray pattern affects how fuel mixes with intake air and therefore combustion efficiency. A well-atomized spray promotes complete combustion, improving throttle response and reducing deposits.
Different engines benefit from different spray geometries, so choose injectors whose nozzle design complements the intake and combustion chamber shape. Poor atomization can contribute to rough running and higher emissions.
Electrical Compatibility and Response Time
Injectors must match the vehicle's electrical characteristics, including impedance and connector type, to ensure correct pulse width and timing. An injector with mismatched impedance can affect driveability or create extra load on the ECU.
Response time, how quickly the injector opens and closes, influences low-RPM idle quality and transient throttle response. Faster, consistent response helps maintain smooth operation during rapid changes in throttle position.
Seal Quality and Leak Resistance
Good sealing at the injector O-rings and internal assembly prevents fuel leaks and pressure loss. Leaks can cause strong fuel odors, hard starting, or poor fuel pressure regulation.
Materials resistant to fuel additives and heat will last longer. Inspectors often prioritize injectors with proven seal materials and robust housing finishes to minimize the risk of external or internal leakage over time.
Durability and Material Construction
Durable construction helps an injector withstand vibration, heat cycles, and exposure to contaminants. Metal components, corrosion-resistant finishes, and quality internal springs contribute to longer service life.
Long-lasting injectors reduce the frequency of replacements and can maintain consistent performance without drifting out of spec. Consider manufacturing quality and materials when assessing longevity.
Serviceability and Maintenance Considerations
Some injectors are easier to service or clean than others, which affects long-term ownership costs and convenience. Reliable access to replacement seals and cleaning protocols can extend injector life and restore performance.
Routine maintenance like professional cleaning or bench testing can revive slightly degraded injectors, but severely worn units may require replacement. Factor in whether the injector design supports straightforward maintenance when making a selection.
How We Chose the Best Acura TLX Fuel Injector
We focused on parts that match the Acura TLX's fuel delivery needs and that meet strict manufacturing and performance standards. Key filters included flow-rate accuracy across operating conditions, nozzle spray pattern consistency, and electrical connector compatibility to ensure proper metering and reliable engine management. We also evaluated materials and sealing quality to mitigate leaks and resist corrosion over time, plus endurance in repeated duty cycles to estimate long-term durability. We excluded items that lacked clear compatibility with the Acura TLX, components without documented flow specifications, and offerings with uncertain manufacturing traceability. The final list prioritizes injectors with verifiable performance specs, robust sealing and electrical reliability, and construction suited to the engine's fueling demands.
Our full evaluation process is outlined in our review methodology.
FAQ
What are common symptoms of a failing fuel injector in an Acura TLX?
Symptoms often include rough idle, poor throttle response, and intermittent misfires. You may also notice increased fuel odor or fluctuating fuel economy. These signs usually prompt inspection and testing to isolate the injector issue.
Can fuel injector cleaning restore performance?
Cleaning can often remove deposits that impair spray pattern and flow, improving idle and throttle responsiveness. Results depend on the level of contamination and injector condition; severely worn or damaged injectors usually need replacement.
How is fuel injector testing typically performed?
Technicians use flow bench testing and electrical checks to verify flow rates, spray pattern, and coil resistance. On-vehicle diagnostics can measure injector pulse and check for misfires or fuel trim anomalies that point to an injector fault.
What are leak symptoms to watch for with fuel injectors?
Leak symptoms include the smell of raw fuel, visible wetness around the injector seals, and hard starting. Internal leaks can flood combustion chambers or upset fuel pressure, causing rough running and performance issues.
Is upgrading injectors a viable way to boost performance?
Upgrading injectors can support higher fuel demands if the engine has been modified, but compatibility with the fuel system and tuning are essential. Without proper matching and calibration, larger injectors may cause drivability problems.
Conclusion
Choosing the right injector for an Acura TLX means balancing precise flow control, reliable sealing, and durable construction. Prioritize flow accuracy and spray quality to preserve smooth idle and efficient combustion, while ensuring electrical compatibility with the vehicle's fuel system. Consider maintenance and long-term durability when deciding between refurbishing or replacing units. A focus on documented specifications and robust materials will deliver the most consistent real-world performance.
Explore More:
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