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If your Acura TSX is slow to crank or shows intermittent starting issues, choosing the right starter motor matters for daily reliability and long-term ownership costs. This guide covers the seven top shortlisted starter motors for the Acura TSX so you can focus on models that fit correctly and perform consistently in real-world conditions.We evaluated candidates across fitment accuracy, electrical output, durability, and ease of installation to narrow the field to the most practical options. Read on for concise guidance and the criteria that shaped our selections.
Looking for other parts? See all Acura TSX parts & accessories.
Top Picks at a Glance
| Best Reviewed A top-rated pick with lots of positive feedback | Boatrip Starter Motor Replacement for Acura TSX and Honda 2.4L L4 Engines |  |
| Most Popular A crowd favorite that many people choose with confidence | Daysyore Starter Motor for 2004–2005 Acura TSX 2.4L (17870) |  |
| Best Quality Built to a higher standard if you want something more solid | A-Premium Starter Motor for Acura TSX and select Honda 2.0L/2.4L engines, 12V 1.6kW, 9-tooth clockwise |  |
| Best Budget The cheapest option that still gets the job done reliably | Yongtoparts Starter Motor Compatible with Acura TSX 2006–2014 |  |
| Most Sold A high-volume bestseller chosen again and again | AOTPAT Starter Motor compatible with Acura TSX 2004–2005, 12V 1.6kW, 9-tooth CW |  |
| Best Value for Money The sweet spot between price and what you get | Boatrip Starter Motor Replacement for 2004–2005 Acura TSX L4 (31200-RAA-A51/A52) |  |
| Best Overall The best all-around choice for most situations | SZKAIDAG Starter Motor for Acura TSX and select Honda 2.4L applications (12V, 1.6 kW) |  |
1. Boatrip Starter Motor Replacement for Acura TSX and Honda 2.4L L4 Engines
| Wattage | 1.6 KW |
|---|---|
| Manufacturer | Boatrip |
This Boatrip starter is a straightforward replacement unit built to match factory fit and function for 2.4L L4 Honda/Acura applications. It installs in the same location as the original starter and is intended for use when the factory starter fails to crank the engine. The motor is manufactured from new components and the listing highlights quality-system certifications and a two-year replacement warranty, which supports reliability-minded buyers. In practice you get a part that bolts in and restores normal starting without extra modification, and many owners report consistent fit and quiet operation after installation. Limitations include variability that can occur with aftermarket starters and occasional reports of shorter service life compared with premium factory replacements. Also some installations on affected vehicles can be labor intensive, so pay attention to access and removal steps before starting the job. For someone repairing an Acura TSX, this unit offers a cost-effective way to return reliable starting performance while keeping a two-year support window if problems arise.
Best for: Reliability-focused buyers seeking an affordable, factory-quality replacement starter for an Acura TSX who prioritize getting the car back to dependable starting without upgrading to high-end branded units.
Less Ideal for: Drivers who prefer OEM-branded parts for maximum expected lifespan or those unwilling to tackle a time-consuming replacement job should consider alternatives.
- Made with 100% new components for consistent starting performance
- Designed for direct fitment to 2.4L L4 Acura/Honda installations for easy replacement
- Manufacturer quality-system certifications indicate controlled production processes
- Two-year replacement warranty provides extra assurance for reliability-focused buyers
- Aftermarket units can show variability in longevity compared with premium factory replacements
- Some vehicle installations are labor intensive which increases total repair cost
Verdict A cost-effective, factory-fit replacement that restores reliable starting for the Acura TSX while backing it with a two-year replacement policy.
2. Daysyore Starter Motor for 2004–2005 Acura TSX 2.4L (17870)
| Fitment | 2004–2005 Acura TSX 2.4L |
|---|---|
| Pinion | 9 teeth, clockwise |
| Power | 1.6 kW, 12V |
This Daysyore starter is offered as a direct-replacement unit for the 2004–2005 Acura TSX 2.4L (part number 17870). It swaps into the factory location and uses a clockwise 9-tooth pinion and a 1.6 kW, 12V motor designed to deliver strong cranking power, including cold-weather starts down to very low temperatures. The unit features copper windings, hardened steel gears, corrosion protection, and bearings intended to match factory fit and basic durability expectations. Typical use is a one-for-one replacement when the original starter shows slow cranking, unusual noises, or fails to engage. Buyers should expect straightforward installation by a mechanic or an experienced DIYer and the practical benefit of improved starting reliability at a budget-friendly cost. Some buyers reported occasional solenoid or shipping damage issues, so check the unit before installation and be prepared for part exchanges if needed. The seller provides a one year warranty and recommends professional installation for testing and safe setup.
Best for: Convenience-driven owners who want a ready-to-install, budget-friendly replacement that restores reliable starting without sourcing OEM parts or extensive troubleshooting.
Less Ideal for: Drivers seeking a long-term high-mileage factory-quality overhaul or a premium remanufactured starter with extended warranty coverage should consider professional remanufactures or dealer parts instead.
- Direct-fit replacement specified for 2004–2005 Acura TSX 2.4L, simplifying installation
- High-torque 1.6 kW 12V motor aimed at reliable cold-weather starting
- Construction details (copper windings and hardened steel gears) that support durability
- Corrosion protection to resist road salt and moisture exposure
- Some customers reported solenoid failures or units arriving damaged, indicating variable quality control
Verdict A cost-conscious, direct-fit starter for the 2004–2005 TSX that delivers strong cold cranking but has some reported QC and shipping concerns.
3. A-Premium Starter Motor for Acura TSX and select Honda 2.0L/2.4L engines, 12V 1.6kW, 9-tooth clockwise
| Power Rating | 1.6KW |
|---|---|
| Voltage | 12V |
| Number of Teeth | 9 |
| Rotation | Clockwise |
This A-Premium starter motor is a direct replacement-style unit that restores cranking performance on 2.0L and 2.4L Honda-derived engines, including the Acura TSX 2006–2014. It is supplied as a single 12V, 1.6 kW motor with a 9-tooth clockwise pinion, meant to mount to factory locations and mate with original bellhousing and ring gear. In real-world use it replaces worn or intermittent starters to return brisk, consistent engine crank and quick starts even in cooler weather. Buyers will appreciate the clear vehicle fitment list and the one-year unlimited-mileage guarantee that provides short-term confidence for high-use cars. Installation can be straightforward for skilled DIYers or shops, though access to the back mounting bolt on some vehicles can be tight and may add labor time. This unit is an aftermarket replacement rather than a factory part, so drivers seeking the absolute longest lifespan available from premium rebuilt brand units may prefer an OEM-brand alternative despite the cost premium.
Best for: Performance-oriented owners who prioritize reliable, quick cranking for daily driving and spirited use and who want a cost-effective, high-function replacement for the Acura TSX 2006–2014.
Less Ideal for: Buyers seeking a factory-brand rebuilt unit with the longest proven lifespan or those who want a plug-and-play swap requiring minimal engine-bay access time should consider alternatives.
- Direct-fit replacement for Acura TSX 2006–2014 and compatible Honda 2.0L/2.4L engines, simplifying installation
- Rated 12V and 1.6 kW to restore strong cranking and quick starts
- Comes with a 9-tooth clockwise pinion that matches factory engagement for compatible models
- One-year unlimited-mileage guarantee provides short-term ownership confidence
- Aftermarket unit rather than a specific OEM-branded starter so long-term durability may vary
- Tight engine-bay access on some models can make installation time-consuming
Verdict A practical, performance-focused replacement that restores strong starting for the Acura TSX at a lower cost than dealer units, with typical aftermarket lifespan considerations.
4. Yongtoparts Starter Motor Compatible with Acura TSX 2006–2014
| Power Rating | 1.6KW |
|---|---|
| Volts | 12V |
| Number of Teeth | 9 |
| Rotation | CW (Clockwise) |
This Yongtoparts starter motor is a budget-focused direct replacement for the 2006–2014 Acura TSX 2.4L. It installs like a factory-quality unit and is used to restore reliable engine cranking when the original starter fails. The unit is rated 1.6 kW, runs clockwise with a 9-tooth pinion, and the seller reports heat and impact resistance intended to handle daily driving demands. In real-world use it bolts into the stock mounting and connects to the existing wiring harness with no modification, so most DIYers or independent shops can complete the swap quickly. Notable benefits are the claimed durability testing and a one-year after-sales commitment. Limitations to consider are that long-term longevity compared with higher-end replacement brands is unknown and this is a single-source aftermarket option rather than a branded remanufactured factory unit. For a cost-sensitive TSX owner who needs a working starter now, it restores function without the premium price.
Best for: Budget-conscious Acura TSX owners who prioritize a low-cost, direct-fit replacement to get their car back to reliable starting quickly and prefer handling installation themselves or through an independent shop.
Less Ideal for: Owners seeking a factory-branded remanufactured starter with an extensive service history or those who prefer extended warranties and dealer-backed parts should consider higher-tier alternatives.
- Direct-fit replacement for 2006–2014 Acura TSX 2.4L, bolts up to factory mounting
- 1.6 kW power rating provides sufficient cranking for typical TSX starting needs
- Designed for heat and impact resistance to handle daily driving conditions
- Includes one-year after-sale support from the seller
- Long-term durability versus premium remanufactured or OEM starters is not documented
- Limited public track record and fewer user reviews compared with established brands
Verdict A wallet-friendly, direct-fit starter for the 2006–2014 Acura TSX that restores starting function without the premium price but with limited long-term provenance.
5. AOTPAT Starter Motor compatible with Acura TSX 2004–2005, 12V 1.6kW, 9-tooth CW
| Vehicle fitment | Acura TSX 2004–2005 2.4L |
|---|---|
| Voltage | 12V |
| Power | 1.6 kW |
| Pinion | 9 Teeth CW |
This AOTPAT starter motor is a direct-replacement unit intended for the Acura TSX 2004–2005 with the 2.4L engine and automatic transmission. It supplies 12 volts at 1.6 kW and uses a 9-tooth clockwise pinion, so it installs like a factory-style starter and is meant for standard engine starting duty. The listing highlights professional testing and built-in overheat and overload protection to reduce failure risk, plus noise-reduction features for quieter cranking. Installation can be straightforward when you have basic tools and access, but several owners note the physical fit can be tight and may require a lift or professional help in some garages. Buyers get an extended warranty claim in the product text and the unit is positioned as an affordable alternative to dealer parts. Expect reliable cold starts and a budget-friendly replacement, but be prepared to pay for professional installation if your workspace is cramped or you lack experience with starter swaps.
Best for: A risk-averse mainstream buyer who wants a lower-cost, factory-style replacement that aims to match original starting performance without experimenting with performance upgrades.
Less Ideal for: Enthusiasts seeking higher-output or performance starters or DIYers with very limited tools and cramped workspace who cannot lift or access tight engine bays easily.
- Direct-fit replacement for 2004–2005 Acura TSX 2.4L to simplify installation
- Built-in overheat and overload protection to help prevent damage during heavy use
- Noise-reduction design for quieter cranking during starts
- Industry testing claimed to match factory standards for fit and function
- Fitment can be tight on some vehicles and may require a lift or shop to access and install
- Aftermarket longevity varies across user reports, with some units failing earlier than expected
Verdict A budget-friendly, factory-style replacement for 2004–2005 Acura TSX owners who want an affordable, tested starter while accepting possible installation difficulty or variable long-term durability.
6. Boatrip Starter Motor Replacement for 2004–2005 Acura TSX L4 (31200-RAA-A51/A52)
| Voltage | 12 Volts |
|---|---|
| Wattage | 1600 |
| Manufacturer | Boatrip |
This Boatrip starter motor is a 12-volt replacement built to fit 2.4L Honda/Acura applications such as the 2004–2005 Acura TSX. It installs where the original starter did and performs the same basic job of engaging the engine flywheel to crank the motor. Notable features include a claimed factory-quality manufacturing process, 100 percent new internal components, and a 1600-watt rating that indicates sufficient torque for routine starts. In practice the unit offers precise fitment and quiet operation according to multiple user reports, and the standardized production helps simplify installation. The seller also advertises a two-year replacement warranty which provides added reassurance for budget-conscious buyers. Limitations to consider are the usual risks with aftermarket starters: occasional failures reported by a small number of buyers and variability in long-term durability compared with higher-end remanufactured or dealership parts. Installation on the TSX can still be labor intensive depending on access, so expect typical workshop time and the need for basic mechanical skills or professional installation.
Best for: Practical optimizers who want a cost-effective factory-style replacement for their Acura TSX and prioritize reliable day-to-day starting without paying dealer prices.
Less Ideal for: Buyers who need a long-term low-risk solution under heavy duty or high-mileage conditions should consider higher-end remanufactured or dealership parts instead.
- Designed for direct fitment to 2004–2005 Acura TSX 2.4L engines, reducing fitment guesswork
- Constructed with all-new internal components to match factory-style performance
- Multiple user reports of quiet operation and reliable starting after installation
- Two-year replacement warranty offers extra protection for cost-conscious buyers
- Some customers report premature failures, indicating variable long-term durability
- Aftermarket quality can vary from unit to unit compared with premium remanufactured starters
Verdict A budget-friendly, direct-fit starter for the Acura TSX that delivers factory-style starting for everyday use but with some variability in long-term reliability.
7. SZKAIDAG Starter Motor for Acura TSX and select Honda 2.4L applications (12V, 1.6 kW)
| Vehicle fitment | Acura TSX 2006–2014 L4 2.4L |
|---|---|
| Power rating | 1.6KW |
| Voltage | 12V |
| Number of teeth | 9 |
| Rotation | CW |
This SZKAIDAG starter motor is a direct-replacement unit intended for Acura TSX 2006–2014 (2.4L) and several Honda 2.4L models. It provides the core function of cranking the engine with a 1.6 kW power rating and a 9-tooth gear that rotates clockwise. Typical use is straightforward: remove the failed starter and install this unit in the same location using existing mounting points and wiring. The listing highlights a geared reduction design for higher torque, pressed copper/graphite brushes for conductivity, and an electromagnetic switch treated for corrosion resistance, which together aim to deliver reliable starting and quieter operation. Buyers will appreciate the emphasis on quality control and ease of installation without specialized tools. Limitations to note are that fitment must be confirmed against OE part numbers and pictures before purchase, and as with many aftermarket starters some users may encounter tighter clearances or a fiddly installation on certain model years. Expect solid starting performance when the part matches the vehicle exactly.
Best for: Balanced buyers who want a practical, factory-quality replacement starter for an Acura TSX and prioritize reliable starting performance and a straightforward swap without premium branding.
Less Ideal for: Customers who prefer dealer-sourced factory parts with direct manufacturer warranty coverage or who need a plug-and-play unit guaranteed for multi-vehicle interchangeability should look elsewhere.
- Direct replacement for Acura TSX 2006–2014 2.4L and matching Honda 2.4L applications
- Rated 1.6 kW and 12V with a geared reduction for stronger torque at cranking
- Pressed copper and graphite brushes for good electrical conductivity
- Electromagnetic switch treated to resist corrosion and reduce noise during operation
- Installation can be tight or awkward on some model years and may require patience or minor adjustments
- Compatibility requires verifying OE numbers and pictures to ensure correct fit
Verdict A practical, well-specified replacement starter for Acura TSX owners who want reliable starting performance at a reasonable value when fitment is confirmed.
Choosing the Right Acura TSX Starter Motor: Key Factors to Consider
Fitment and Mounting Compatibility
Correct mechanical fitment ensures the starter aligns with the flywheel and bolts up without modification. Improper fit can lead to grinding, premature wear on the ring gear, or misalignment that stresses the starter housing.
Check bolt pattern, shaft length, and mounting flange orientation because these dimensions determine whether the unit installs cleanly and maintains proper engagement under engine torque. Choosing a starter with verified fitment reduces installation time and minimizes the risk of vibration or alignment-related failure.
Electrical Output and Motor Torque
A starter must provide sufficient torque to crank the engine reliably, especially in cold starts or with higher-compression engines. Look at rated torque and current draw to ensure the starter matches the vehicle electrical system and battery capacity.
Excessive current draw can strain wiring and the battery, while inadequate torque can lead to slow cranking and incomplete starts. Pick a unit whose electrical specifications align with the vehicle charging and starting system to balance performance and component longevity.
Durability and Construction Quality
Materials, gear design, and internal tolerances affect how long a starter lasts under normal driving conditions. Robust housings, high-quality bearings, and hardened pinion gears resist wear from repeated engagement with the flywheel.
Consider resurfacing and sealing measures that protect internal components from oil and moisture. A sturdily built starter reduces the likelihood of mid-life failures and can lower long-term maintenance needs.
Solenoid and Electrical Connections
The solenoid is a frequent failure point because it handles high current and mechanical engagement. Evaluate the solenoid design, terminal types, and whether the assembly uses replaceable contacts.
Secure, corrosion-resistant terminals and straightforward wiring access simplify installation and future servicing. Good solenoid design reduces clicking issues and intermittent engagement problems that commonly cause no-start conditions.
Serviceability and Replacement Parts
Availability of replacement brushes, solenoid components, or overhaul kits makes repairs easier and can extend the unit's service life. Starters designed with serviceability in mind can be repaired at a lower cost than full replacement.
Check whether commonly worn items are modular and whether parts are readily available from independent suppliers. A serviceable starter is a practical choice for owners who prefer repair over replacement.
Ease of Installation
Some starter installations require working in tight engine bays or lifting the vehicle for access. Starters with straightforward connector locations and uncomplicated mounting procedures reduce labor time.
Assess whether the unit requires special tools, supplemental brackets, or wire adapters. A starter that installs cleanly without fuss minimizes installation errors and can be completed reliably by a competent DIYer or technician.
FAQ
What are common signs a starter motor is failing?
Common indicators include a rapid clicking when you turn the key, a slow or labored crank, or complete no-crank conditions. You may also notice intermittent starts where the engine starts sometimes and not others. These symptoms often point to electrical engagement or internal wear issues rather than unrelated components.
How can I test a starter on an Acura TSX?
A basic approach is to check battery voltage at the starter during a crank and listen for engagement or clicking. Measuring voltage drop across starter cables and observing current draw with appropriate tools helps confirm whether the starter is drawing excessive current or failing to engage. For precise diagnostics, follow safe, vehicle-specific testing procedures or consult a technician.
Are starter solenoid problems common and how do they present?
Solenoid issues are relatively common because the solenoid handles high current and mechanical actuation. Symptoms include a single click with no crank, intermittent engagement, or the starter remaining engaged after the engine starts. Corroded terminals and worn contacts often underlie these behaviors.
Will a bad starter show a clicking noise only?
A clicking noise often accompanies solenoid or low-voltage conditions but is not exclusive to starters. It can indicate insufficient battery voltage, poor cable connections, or a weak solenoid. It is one of several diagnostic clues to consider alongside voltage and current checks.
Can starter motor replacement be done at home?
Many starter replacements are doable at home if you have basic mechanical skills, the right tools, and a safe workspace. Accessibility varies by vehicle and may require lifting the car or removing obstructing components. Always follow vehicle-specific procedures and safety precautions when attempting a DIY installation.
How We Chose the Best Acura TSX Starter Motor
We started by focusing on components specifically designed to fit the Acura TSX platform and evaluated each candidate against four to six practical criteria. Key factors included mechanical fitment and mounting alignment to ensure proper engagement with the flywheel, electrical specifications such as torque and current draw to match the vehicle charging system, and durability measures like materials and expected service life under normal driving conditions. We also considered ease of installation, including wiring access and whether common tools suffice, plus warranty terms and availability of replacement parts.We excluded units with unclear compatibility information, components intended only for racing or modified drivetrains, and items lacking documented performance or service history. The result is a shortlist of starters that meet real-world fitment, electrical, durability, and serviceability standards for the Acura TSX.
Our full evaluation process is outlined in our review methodology.
Conclusion
Prioritize fitment accuracy, sufficient electrical torque, and a robust solenoid when choosing a starter for an Acura TSX. Balance durability and serviceability against installation complexity to find a unit that meets your maintenance preferences.Accept that tradeoffs exist between ease of repair and initial convenience. Focus on verified fit and electrical compatibility first, then consider durability and service options to minimize future roadside problems and maintenance downtime.
Explore More:
- Check out all Acura TSX parts & accessories
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