Description
Part Description
This OEM alternator was removed from a 2014 Nissan Quest equipped with a 3.5L V6 engine. The part has been professionally inspected by our experienced technicians and is currently on the shelf, ready for immediate shipment. As a genuine Nissan factory component, this alternator maintains the original specifications and quality standards for your Quest.
The alternator is a critical component of your vehicle’s charging system, converting mechanical energy from the engine into electrical power to charge the battery and run electrical systems. Common alternator failures include worn brushes, faulty diodes, or bearing problems that can leave you stranded with a dead battery. Symptoms of alternator failure include dimming lights, dashboard warning lights, or difficulty starting the vehicle.
603 Auto Salvage maintains an extensive inventory of over 50,000 quality used parts from more than 1,100 vehicles. Our parts are carefully inspected and graded to ensure reliability and customer satisfaction. Contact us to verify fitment for your specific vehicle or browse our online inventory for additional Nissan Quest components. 50,000+ parts in stock from over 1,100 vehicles. Contact us or call (603) 392-7313 for anything you need.
Part Specifications
| Part | Alternator Assembly – 3.5L V6 Engine |
| Interchange # | 50255 |
| OEM Part Number | Contact for OEM# |
| Side | N/A |
| Part Grade | A — Grade A – Good working condition, 135K miles, inspected and ready to ship |
| Warranty | 90-Day Warranty (Standard coverage for electrical components with moderate mileage) |
| Type | Used OEM |
Vehicle Information (Donor)
| Year / Make / Model | 2014 NISSAN QUEST |
| VIN | N/A |
| Vehicle Stock # | 0311250935 |
Our Testing & Inspection Process
Every part at 603 Auto Salvage is inspected before listing. Here is what was verified on this Alternator Assembly – 3.5L V6 Engine:
| ✅ Electrical connections | All terminals and wiring harness connections verified intact |
| ✅ Housing condition | Case inspected for cracks, damage, and proper mounting points |
| ✅ Pulley assembly | Pulley checked for proper alignment and smooth rotation |
| ✅ Internal components | Brushes, slip rings, and bearings assessed for wear |
| ✅ Output testing | Electrical output verified within manufacturer specifications |
Compatibility — What Vehicles Does This Part Fit?
Based on interchange #50255, this part fits the following vehicles. Always confirm fitment with your mechanic before purchasing.
| Year(s) | Make | Model | Notes |
|---|---|---|---|
| 2011-2017 | Nissan | Quest | 3.5L V6 engine – Contact us for full compatibility verification |
Questions? Need a shipping quote? Call us now:
603 Auto Salvage | 233 Main St, Plaistow, NH 03865
Mon–Fri 8am–4:30pm | Sat 8am–2pm | Sun Closed
Warranty & Shipping
Frequently Asked Questions
Will this alternator fit my 2014 Nissan Quest?
This alternator is specifically from a 2014 Nissan Quest with 3.5L V6 engine. Contact us with your VIN to verify exact fitment for your vehicle’s specific configuration.
What are signs that my Nissan Quest alternator is failing?
Common symptoms include dimming headlights, dashboard warning lights, difficulty starting, or a dead battery. You may also hear grinding or whining noises from the alternator area.
Is this a genuine Nissan alternator or aftermarket?
This is a genuine OEM Nissan alternator removed from a donor vehicle, maintaining original factory specifications and quality standards.
How do I know if I need a new alternator or just a battery?
A simple test is to start the vehicle and disconnect the battery – if the engine dies, the alternator likely isn’t charging. Professional testing can measure alternator output voltage.
What tools are needed to replace a Nissan Quest alternator?
Basic hand tools including wrenches, sockets, and possibly a serpentine belt tool. The alternator is typically accessible from the top of the engine bay in the Quest.
Related Parts & Resources
OEM Part Numbers & Cross-Reference
Looking for this part by number? Here are the reference numbers:
| Interchange Number | 50255 |
| Stock Number | 0311250935 |
| Engine Type | 3.5L V6 |
Price Comparison — Why Used OEM Makes Sense
| Source | Price Range | Warranty | Notes |
|---|---|---|---|
| Dealer (New OEM) | $280-$350 | 1 year | Brand new, longest wait time |
| Aftermarket | $120-$180 | Varies | Non-OEM fitment, quality varies |
| Other Salvage Yards | $85-$125 | 30–60 days | Varies in quality and testing |
| 603 Auto Salvage | $75 | 90-Day Warranty | Tested, Grade A, ships in 24hrs |
Installation Notes
- Disconnect the negative battery cable before beginning work to prevent electrical shorts
- Remove the serpentine belt and note the routing pattern for proper reinstallation
- Support the alternator weight when removing mounting bolts to prevent dropping
- Clean all electrical connections with contact cleaner before connecting to the new alternator
- Torque all mounting bolts to manufacturer specifications to prevent vibration issues
🔍 Free Fitment Check
Call us with your VIN and we will verify compatibility for free. No obligation, no pressure — just answers.
Our parts specialists check interchange data in real-time
Estimated Shipping Costs by Region
This part ships via FedEx Ground. Prices are estimates — call for an exact quote to your zip code.
| Region | Estimated Cost | Transit Time |
|---|---|---|
| New England (NH, MA, ME, VT, CT, RI) | $15 – $30 | 1–3 business days |
| Northeast (NY, NJ, PA, MD, VA) | $20 – $40 | 2–4 business days |
| Southeast (FL, GA, NC, SC, TN) | $25 – $45 | 3–5 business days |
| Midwest (OH, MI, IL, IN, WI, MN) | $30 – $50 | 3–5 business days |
| Southwest (TX, AZ, NM, OK) | $35 – $55 | 4–6 business days |
| West Coast (CA, OR, WA) | $40 – $65 | 5–7 business days |
Local pickup is always free. Free delivery within 30 miles of Plaistow, NH.
Why Buy From 603 Auto Salvage?
- 50,000+ parts in stock from over 1,100 vehicles on-site in Plaistow, NH
- Every part inspected before listing — no guesswork
- Family-owned salvage yard — real people, not a call center
- 90-Day Warranty on this part
- Fast shipping — most orders ship within 24 hours
- Competitive pricing — save 50–70% vs dealer prices
- Serving New Hampshire, Massachusetts & all 50 states
Ready to order? Call (603) 392-7313 or add to cart above. We are here to help.




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