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If your Infiniti FX35 struggles to start, swapping in the right starter motor makes the repair straightforward and dependable. The right unit restores consistent cranking speed, reduces electrical strain, and helps avoid repeat trips to the shop. This guide presents seven shortlisted starter motors chosen for their fitment accuracy, build quality, and electrical performance. You will get clear criteria we used to evaluate options and practical guidance for selecting a replacement that suits typical driving and maintenance needs.Read on to see the top picks and the factors to weigh before you buy.
Looking for other parts? See all Infiniti FX35 parts & accessories.
Top Picks at a Glance
| Best Reviewed A top-rated pick with lots of positive feedback | A-Premium Starter Motor Compatible with Infiniti FX37 and Select Nissan/Infiniti V6 Engines |  |
| Most Popular A crowd favorite that many people choose with confidence | SINTLY 12V 2.0KW Starter Motor (9-Tooth, CW) |  |
| Best Quality Built to a higher standard if you want something more solid | SZKAIDAG Starter Motor for Infiniti G37/Q50/Q70 and Nissan 370Z (23300-EY00E Compatible) |  |
| Best Budget The cheapest option that still gets the job done reliably | SCITOO Starter Motor 1.4 kW, 12T, CW for Infiniti FX35 (3.5L) |  |
| Most Sold A high-volume bestseller chosen again and again | Boatrip Starter Motor Replacement for Infiniti QX56/Nissan Titan/Armada/Pathfinder 5.6L |  |
| Best Value for Money The sweet spot between price and what you get | MOAUTO Starter Motor 17934N Compatible with Infiniti FX37/FX35 Fitments |  |
| Best Overall The best all-around choice for most situations | Boatrip Starter Motor replacement for Infiniti QX/Q Series 5.6/5.0 V8 (23300-1CA0A) |  |
1. A-Premium Starter Motor Compatible with Infiniti FX37 and Select Nissan/Infiniti V6 Engines
| Voltage | 12 Volts |
|---|---|
| Wattage | 1.4 KW |
| Number of Teeth | 10 |
| Rotation | CW (Clockwise) |
This A-Premium starter is a replacement starter motor designed to crank 12V V6 engines used in certain Infiniti models. It installs where the factory starter sits and is intended for straightforward swap-in replacement during a repair or DIY job. Notable features include a 1.4 kW power rating, clockwise rotation, and a 10-tooth pinion, which match the mechanical interface for compatible engines. Buyers will appreciate the unit's common-fit design that simplifies installation and the company's one-year unlimited-mileage guarantee that provides basic post-install support. Real-world reports in the listing indicate reliable cold starts and quiet operation compared with some factory units. Limitations are that fitment must be confirmed against the vehicle's exact engine and reference numbers because the part covers several Nissan/Infiniti models and may not match every sub-variant, and it is an aftermarket unit rather than a factory-quality part which can mean differences in long-term durability compared with a factory replacement.
Best for: A reliability-focused buyer who wants an affordable, ready-to-install replacement to restore dependable starting without spending for an OEM unit.
Less Ideal for: Drivers who prefer only factory-brand parts or who need guaranteed OEM longevity for high-mileage restorations should consider factory replacements instead.
- Direct-fit replacement design for compatible Infiniti/Nissan V6 engines which simplifies installation
- 1.4 kW power rating and clockwise rotation that match common factory starter specs
- Multiple customer reports of reliable cold starts and quiet operation
- Comes with a one-year unlimited-mileage guarantee from the manufacturer
- Aftermarket unit so long-term durability may vary compared with a factory-quality replacement
- Fitment covers several models and reference numbers so buyers must verify exact engine and part cross-reference before ordering
Verdict A cost-effective, direct-fit aftermarket starter that restores reliable starting for compatible Infiniti V6 models but requires careful fitment confirmation.
2. SINTLY 12V 2.0KW Starter Motor (9-Tooth, CW)
| Power | 2.0KW |
|---|---|
| Voltage | 12V |
| Teeth | 9 |
| Rotation | Clockwise |
This SINTLY starter is a straightforward direct-replacement unit intended for affected Infiniti V8 models. It delivers 2.0 kW of cranking power, a clockwise rotation and a 9-tooth pinion, so installation is the same basic process as swapping a factory starter: disconnect battery, remove the old starter and bolt this unit into place. The packaged single-starter configuration and stated quality checks mean it is aimed at getting a non-running FX35 back on the road quickly. Many buyers report easy fit and immediate function, which suits DIY installs or quick shop swaps. Expect practical benefits like simplified compatibility with known replacement part numbers and a standard electrical connection pattern. Limitations are typical for budget aftermarket starters: long-term durability appears mixed across user reports and occasional early solenoid failures have been reported, so you may prefer a remanufactured factory-quality unit if you need longer warranty-backed service life.
Best for: Convenience-driven buyers who want a quick, easy replacement to get an Infiniti FX35 back on the road without sourcing a dealer unit.
Less Ideal for: Owners seeking a long-term, dealer-grade remanufactured starter with extended warranty and Proven longevity should consider factory-replacement options instead.
- Direct-replacement specification with matching rotation and tooth count for affected Infiniti V8 models
- Sufficient 2.0 kW power for reliable cranking of large V8 engines
- Simple bolt-in installation that mirrors factory starter removal and fitment
- Single-unit packaging makes it ready for immediate swap during a repair
- Mixed longevity reported by some users, with isolated solenoid failures
- Not a remanufactured factory-quality unit with extended manufacturer warranty options
Verdict A budget-friendly, bolt-in replacement that gets an Infiniti V8 running again quickly but may not match remanufactured factory units for long-term durability.
3. SZKAIDAG Starter Motor for Infiniti G37/Q50/Q70 and Nissan 370Z (23300-EY00E Compatible)
| Power Rating | 1.6KW |
|---|---|
| Volts | 12V |
| Number of Teeth | 10 |
| Rotation | CW |
| Replacement For | 23300-EY00E |
This SZKAIDAG starter motor is a direct-replacement style unit built to fit several Infiniti V6 applications and the Nissan 370Z, offering a 12V, 1.6 kW rated motor with a 10-tooth pinion and clockwise rotation. In use it performs the basic job of engaging the flywheel and spinning the engine to start; the seller highlights a pressed copper/graphite brush holder, a reduction gearbox for higher torque at the pinion, and an electromagnetic switch intended for reliable engagement. For a performance-oriented buyer the practical benefits are strong: it bolts into place without modification, provides quick cranking, and customers report quiet operation and consistent starting under frequent cycles. The unit is marketed as factory-spec fit with multiple quality checks during production, which helps reduce fitment surprises. Limitations to consider are typical for aftermarket starters: longevity can vary with driving patterns and installation quality, there is no detailed warranty disclosed in the product specs, and compatibility must be confirmed against the vehicle's exact OEM part number before purchase.
Best for: Performance-minded owners who prioritize reliable starting and strong cranking power and who are comfortable fitting a high-quality aftermarket replacement to maintain engine performance.
Less Ideal for: Drivers seeking dealer-sourced parts with manufacturer-backed warranties or those unwilling to verify exact part-number compatibility before installation should consider other options.
- Designed to match factory fit and bolt directly into compatible Infiniti models
- 1.6 kW, 12V motor with reduction gearbox for higher cranking torque
- Pressed copper/graphite brush holder for improved conductivity
- Quiet operation using claimed silent technology
- No explicit warranty information provided in the product details
- Aftermarket longevity can vary compared with a dealer-sourced factory replacement
Verdict A performance-oriented aftermarket starter that delivers strong, quiet cranking and factory-style fit for compatible Infiniti V6 models when part numbers are confirmed.
4. SCITOO Starter Motor 1.4 kW, 12T, CW for Infiniti FX35 (3.5L)
| Power Rating | 1.4 kW |
|---|---|
| Rotation | CW |
| Voltage | 12V |
| Number of Teeth | 12-Tooth Pinion |
| Type | PMGR |
This SCITOO starter motor is a budget-focused replacement intended for the Infiniti FX35 3.5L. It installs in place of the factory unit and supplies 1.4 kW of cranking power with a 12-tooth pinion and clockwise rotation, so it performs the basic job of turning the engine for starting. Typical use is a direct swap during a starter replacement service; buyers should confirm year and fitment before ordering. Notable features include a PMGR design that simplifies engagement, a 12V electrical rating compatible with the vehicle, and multiple OEM reference numbers to match the factory part. Practical benefits are straightforward compatibility for FX35 owners, a compact packaged unit that is easy to handle during install, and many owners report acceptable fit and function for everyday use. Limitations are variability in long-term durability reported by some users and occasional need for minor adjustments at install to ensure engagement. For a budget option, it delivers necessary starting performance but may not match the longevity of higher-end factory-quality replacements.
Best for: Budget-conscious Infiniti FX35 owners who need a functional, low-cost starter replacement and prioritize immediate fitment and value over long-term OEM-level durability.
Less Ideal for: Buyers seeking a long-term, high-mileage factory-quality replacement or extended warranty coverage should consider premium or remanufactured starters instead.
- Made to fit Infiniti FX35 3.5L applications so bolt pattern and pinion match factory layout
- 1.4 kW power rating provides adequate cranking for normal starts
- PMGR type with 12V electrical compatibility for straightforward swap-in
- Multiple OEM reference numbers listed to help confirm correct replacement
- Some buyers report early failures or unreliable longevity compared with factory-quality units
- A few units required tapping or adjustment during first install to engage reliably
Verdict A practical low-cost starter for Infiniti FX35 owners that gets the job done but may trade off long-term durability for upfront savings.
5. Boatrip Starter Motor Replacement for Infiniti QX56/Nissan Titan/Armada/Pathfinder 5.6L
| Manufacturer | Boatrip |
|---|---|
| Item model number | 17867 |
| Manufacturer Part Number | YWMID001 |
| Compatible engine | 5.6L V8 |
| Warranty | 2-year replacement |
This Boatrip starter is a replacement unit manufactured from 100% new components and engineered to meet or exceed factory specifications for compatible 5.6L V8 applications. It is used to replace a failed starter and restore reliable engine cranking; installation is the same basic process as swapping any vehicle starter. Notable features include standardized production for accurate sizing, ISO/IATF-aligned quality processes, and a two-year replacement warranty from the brand. In practice the unit offers straightforward fitment when the correct application is selected and several buyers report immediate, trouble-free starts. Limitations to consider are potential fitment differences between similar engine variants so careful verification against vehicle-specific fitment is required, and instructions included with the unit have been described as minimal by some users, which could make installation trickier for first-time DIYers. For a risk-averse buyer who wants a factory-style replacement without buying a dealer unit, this unit provides solid value and a multi-year parts guarantee.
Best for: Risk-averse mainstream buyers seeking a factory-style, lower-cost replacement who prioritize reliability and post-purchase support over buying dealer parts.
Less Ideal for: Buyers who need dealer-authorized parts, want extensive installation guidance included, or who prefer professional shop-installed components without self-verification of fitment.
- Built with 100% new components engineered to match factory-style performance
- Standardized production aimed at accurate sizing for easier installation
- Manufacturer follows certified quality management systems
- Two-year replacement warranty adds post-purchase protection
- Instructions are limited which may complicate DIY installation
- Fitment can vary across similar engine variants so verification is necessary
Verdict A budget-friendly, factory-style replacement starter with new components and a two-year warranty that suits cautious buyers when vehicle-specific fitment is confirmed.
6. MOAUTO Starter Motor 17934N Compatible with Infiniti FX37/FX35 Fitments
| Rotation | CW |
|---|---|
| Teeth | 10 Tooth Pinion |
| Volts | 12 Volts |
| Power Rating | 1.6 KW |
| Compatible Part Numbers | 17934N, 104384, 23300EY00A, SR2319X |
This MOAUTO starter motor is a direct-replacement unit designed to restore reliable engine cranking on Infiniti FX models that use the listed part numbers. It installs in place of the factory starter and is used the same way: bolt it to the bellhousing, reconnect the battery and solenoid wiring, and the car should start as intended. Notable features include a 1.6 kW power rating, clockwise rotation, a 10-tooth pinion, and compatibility with common Infiniti Nissan part numbers, which helps ensure correct engagement with the flywheel. Buyers will appreciate the emphasis on corrosion-resistant components, sealed bearings, and a claimed thermal protection feature for longer life. Practical benefits are straightforward: OEM-style fit, adequate torque for V6 starts, and generally positive user reports about fit and function. Limitations to be aware of are that solenoid connections may require careful tightening during installation and long-term durability beyond the first year is uncertain despite a one-year after-sales service. Some vehicles may need minor installation work for access depending on engine bay layout.
Best for: Practical optimizers who want a low-cost, near-factory replacement that restores reliable starting without paying dealer prices; ideal for owners who are comfortable verifying fitment and doing or overseeing a straightforward installation.
Less Ideal for: Buyers seeking a long-term premium remanufactured unit with extended proven service life or those who prefer dealer-supplied factory units should consider alternatives.
- Designed to match factory fit and mounting for compatible Infiniti models
- 1.6 kW rated motor provides sufficient starting torque for V6 engines
- Sealed bearings and corrosion-resistant components aimed at longer service life
- Replaces several common Infiniti/Nissan part numbers for easier fit confirmation
- Solenoid electrical connection can be a tight fit and may need extra securing during installation
- Long-term reliability beyond the included one-year support is not proven by the listing
Verdict A cost-conscious, OEM-fit replacement starter that restores reliable starting on Infiniti FX models if you verify fitment and secure the solenoid connection during installation.
7. Boatrip Starter Motor replacement for Infiniti QX/Q Series 5.6/5.0 V8 (23300-1CA0A)
| Wattage | 2 KW |
|---|---|
| Phase Type | Single Phase |
| Manufacturer | Boatrip |
| Item model number | 19068 |
This Boatrip starter motor is a direct-replacement unit built to match factory fitment for compatible Nissan/Infiniti V8 applications and intended as a swap-in starter for vehicles that need a reliable crank motor. It is typically used when the original starter fails or shows slow cranking and is installed in place of the factory unit using the same mounting points and electrical connections. The product emphasizes standardized production, premium new components, and factory-quality tolerances to make installation straightforward for a professional or experienced DIYer. Notable features include claimed OEM-style performance, a 2 kW rating listed by the manufacturer, and a two-year replacement warranty. Real-world benefits are solid starting power and broad compatibility with the specified engine families, which should restore dependable cold and hot starts. Limitations to consider are mixed long-term reliability reported by some users and the need to confirm exact engine/serial fitment for the Infiniti FX35 before purchasing since this listing targets several V8 Nissan/Infiniti platforms rather than being FX35-specific.
Best for: A balanced all-round buyer seeking a cost-effective factory-quality replacement who prioritizes dependable starting performance and straightforward installation.
Less Ideal for: Drivers who want a starter specifically marketed for the Infiniti FX35 with guaranteed single-model fitment or those who prefer an established OEM-branded part should consider alternatives.
- Factory-style fitment aimed at straightforward installation
- Manufactured with new components to meet or exceed OEM specifications
- 2 kW rated output for strong cranking performance
- Two-year free replacement service offered by the brand
- Listing covers multiple vehicle platforms so you must verify FX35 compatibility before ordering
- Some individual reviews report early failures indicating variable long-term durability
Verdict A budget-minded, factory-style replacement starter that restores strong cranking power but requires careful fitment verification for the FX35.
Choosing the Right Infiniti FX35 Starter Motor: Key Factors to Consider
Fitment and Mounting Compatibility
Correct fitment is essential because starter motors must align precisely with the engine flywheel and mounting bosses. A unit that matches factory mounting holes and shaft length reduces installation time and minimizes the risk of misalignment that can cause premature wear.
Confirming the correct bolt pattern, connector type, and engagement depth ensures the starter meshes cleanly with the flywheel teeth. Fitment that is slightly off can cause noise, grinding, or failed engagement, so prioritize exact compatibility when selecting a starter for the Infiniti FX35.
Electrical Ratings and Cranking Torque
Electrical specifications determine whether the starter can reliably turn the engine under a variety of conditions. Look for rated cranking amps and torque figures that meet or exceed the vehicle's original equipment specifications to ensure consistent starts, especially in colder climates or high-compression engines.
A starter with insufficient electrical output will strain the battery and ignition system, leading to slow cranking or failure to start. Matching the starter's voltage rating and ensuring the solenoid and wiring can handle the load avoids overheating and premature failure.
Solenoid and Engagement Mechanism
The solenoid controls engagement of the starter pinion with the flywheel, so its reliability directly affects starting performance. A robust solenoid design resists sticking, provides clean electrical switching, and avoids intermittent engagement problems that manifest as clicking noises or failure to turn the engine.
Inspect whether the design uses sealed contacts and quality materials. Poor solenoid performance often shows as slow or inconsistent engagement, so prioritize starters with proven solenoid durability and straightforward service options.
Durability of Mechanical Components
Internal gears, bearings, and the pinion must withstand repeated high-torque starts. Materials such as hardened steel gears and sealed bearings extend service life and reduce the chance of gear wear that can lead to grinding or premature replacement.
Corrosion-resistant finishes and robust housings protect components from moisture and road salt. Choose starters with evidence of quality machining and heat treatment to ensure the mechanical parts will endure normal and heavy use.
Serviceability and Replacement Parts
Ease of servicing matters if you plan to perform repairs or source replacement components. Starters designed with accessible replacement brushes, solenoids, or mounting hardware simplify maintenance and lower long-term ownership effort.
Availability of replacement parts and clear installation guides reduce downtime. For users who prefer DIY repairs, a starter that offers modular service options is often a better long-term value.
Installation Considerations and Electrical Connections
Practical installation factors include the starter's weight, connector type, and whether it requires special tools or time-consuming adjustments. A unit that uses the factory connector and standard fasteners shortens installation time and reduces the chance of wiring mistakes.
Verify that the starter's electrical terminals are robust and compatible with existing wiring. Proper grounding, insulated terminals, and clear torque specifications for mounting bolts help ensure a safe, lasting installation.
FAQ
What are common starter motor symptoms in an Infiniti FX35?
Common symptoms often include a single click or rapid clicking when you turn the key, slow cranking, or no crank at all. Intermittent starting, unusual grinding noises during engagement, and dimming dash lights during attempts to start can also indicate starter issues.
How can I test a starter on the Infiniti FX35?
Basic tests include checking battery voltage and connections first, then listening for solenoid clicks while trying to start. A bench test or voltage drop test across the starter circuit can reveal electrical faults. For accurate diagnosis, measure cranking amps and consult wiring diagrams or a technician.
Are starter solenoid problems different from mechanical starter failures?
Yes, solenoid problems typically affect electrical engagement and cause clicking or intermittent engagement, while mechanical failures involve worn pinion gears or bearings that produce grinding, freewheeling, or failure to engage. Both types can prevent reliable starting but require different repair approaches.
Is starter motor installation difficult on an Infiniti FX35?
Difficulty varies with experience and tools. Many installations are straightforward with basic hand tools, but some access limitations or heavy components can complicate the job. Ensuring correct torque on mounting bolts and secure electrical connections is important for a reliable install.
When should I consider replacing starter motor parts rather than the whole unit?
If diagnostics show the solenoid, brushes, or drive gear are the sole issues and parts are readily available, replacing those components can be cost-effective. However, if multiple internal elements show wear or there is significant corrosion, a complete replacement is often more reliable.
How We Chose the Best Infiniti FX35 Starter Motor
We focused on criteria that directly affect starting reliability and vehicle compatibility. Primary filters included exact fitment to the Infiniti FX35 mounting points and electrical connectors, rated torque and cranking amps to match the vehicle demands, and durable materials for gear and solenoid components. We also evaluated manufacturing quality controls, warranty terms, and common longevity indicators such as heavy-duty bearings and corrosion-resistant finishes. Ease of installation and availability of replacement parts were assessed to reflect DIY and shop-level servicing needs.We excluded units with ambiguous vehicle fitment, incomplete electrical specifications, or lacking core mechanical details. Units with poor documented reliability or minimal warranty support were not considered. The final list emphasizes correct fit, robust electrical performance, and practical serviceability for the Infiniti FX35.
Our full evaluation process is outlined in our review methodology.
Conclusion
Selecting the right starter motor for an Infiniti FX35 means balancing fitment accuracy, electrical performance, and mechanical durability. Prioritize units that match the vehicle's mounting and electrical specifications, offer a robust solenoid and hardened mechanical components, and provide accessible replacement parts for long-term serviceability.Consider your comfort with installation and whether you prefer a unit designed for easy servicing. Paying attention to these tradeoffs helps ensure dependable starts and reduces the likelihood of repeat repairs.
Explore More:
- Check out all Infiniti FX35 parts & accessories
- Explore Starter Motors Maintenance & Repair Guides
- Explore Electrical System
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