A quick snapshot: the cost depends on whether you buy an OEM part from a dealer, an aftermarket new unit, a remanufactured unit, or a used/refurbished unit. The alternator itself typically ranges from about $150 to $900, with installation adding roughly $100 to $600 depending on labor rates and location.
In more detail, the Infiniti M35 uses a VQ-series 3.5-liter engine, and prices vary by model year, supplier, and condition of the part. The following guide covers common options, what you can expect to pay, and how installation costs can influence the total. Make sure to verify part compatibility for your exact year and trim, and check whether a core charge applies when buying remanufactured or used units.
What determines the price
Price can be influenced by the part’s origin (OEM vs aftermarket), new versus remanufactured versus used, warranty terms, and the seller’s location. OEM parts generally carry higher prices but come with dealership warranties and guaranteed fitment, while aftermarket and remanufactured parts offer cost savings with varying warranty coverage.
- OEM New from a dealer: typically the highest upfront price
- OEM Remanufactured from dealer/authorized shops: often mid-range with a warranty
- New aftermarket: usually cheaper than OEM but with variable warranties
- Remanufactured aftermarket: cost-effective option with some warranty
- Used or salvage-yard units: lowest upfront cost but higher risk and shorter or no warranty
The main takeaways are that OEM options cost more, while remanufactured and aftermarket units offer savings, and used units save the most but come with reliability considerations. Always factor in potential core charges and warranty terms.
Pricing options
OEM/Dealer price range
Prices shown are for the alternator unit itself (parts only; not installed). Availability can vary by year and region, and dealers may offer remanufactured variants with warranties.
- New OEM Infiniti/M35 alternator: typically $600–$900
- Remanufactured OEM-equivalent from dealer/authorized shop: typically $350–$600
Summary for OEM options: expect higher upfront cost but potentially stronger guarantee of fit and longer warranty coverage.
Aftermarket, remanufactured, and used price ranges
These options vary by brand, refurbishing quality, and warranty terms. Prices below reflect part costs, not installation.
- New aftermarket alternator: typically $200–$500
- Remanufactured (aftermarket brand): typically $150–$350
- Used or salvage-yard units: typically $75–$150
Summary for aftermarket/remanufactured/used: these options provide significant savings, but verify warranty coverage and condition of the unit before purchase.
Installation and total cost
Labor and related parts influence the total expense. The following ranges apply to common scenarios for an Infiniti M35 installation.
- Estimated installation time: about 1–2 hours in most shops
- Average shop rate: about $75–$150 per hour, depending on region
- Estimated total installed cost: roughly $300–$1,200, depending on part price and labor
Conclusion: The biggest swing factor for total cost is the combination of the part price chosen and the local labor rate.
Summary
For an Infiniti M35, you can expect a broad price spectrum for an alternator. OEM-new parts typically run $600–$900, OEM-remanufactured around $350–$600, aftermarket new around $200–$500, remanufactured about $150–$350, and used units roughly $75–$150. Labor costs add roughly $100–$600 on top, depending on local rates and job complexity. To get an exact figure, check quotes from nearby Infiniti dealers, independent shops, and auto parts retailers, and confirm compatibility with your specific model year.


