Description
Part Description
This Grade A alternator was removed from a 2007 GM Trucks Silverado 1500 with only 73,000 miles. The unit is a 145-amp alternator with option code KG3 and features the new style design. Our technicians have thoroughly inspected this alternator and it is currently on the shelf ready to ship immediately.
The alternator is a critical component of your vehicle’s charging system, converting mechanical energy from the engine into electrical energy to power your vehicle’s electrical systems and charge the battery. Common alternator failures include worn brushes, failed diodes, or bearing wear, often resulting in dimming lights, battery warning lights, or complete electrical system failure. A quality replacement alternator like this OEM unit ensures reliable performance and proper charging system operation.
At 603 Auto Salvage, we maintain over 50,000 quality used auto parts in stock from more than 1,100 vehicles. Our experienced team carefully inspects each part to ensure you receive reliable, cost-effective solutions for your repair needs. Contact us to verify fitment for your specific vehicle or browse our extensive inventory online. 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 – 145 Amp (Option KG3) |
| Interchange # | 192 |
| OEM Part Number | Contact for OEM# |
| Side | N/A |
| Part Grade | A — Grade A – 73,000 miles, good working condition, inspected and ready to ship |
| Warranty | 6-Month Warranty (Low mileage Grade A part with verified electrical output) |
| Type | Used OEM |
Vehicle Information (Donor)
| Year / Make / Model | 2007 GM TRUCKS SILV15 |
| VIN | N/A |
| Vehicle Stock # | 1013257953 |
Our Testing & Inspection Process
Every part at 603 Auto Salvage is inspected before listing. Here is what was verified on this Alternator Assembly – 145 Amp (Option KG3):
| ✅ Electrical Output Test | Verified proper voltage and amperage output |
| ✅ Bearing Condition | Smooth rotation with no excessive play or noise |
| ✅ Brush and Slip Ring Wear | Minimal wear, good electrical contact |
| ✅ Case and Mounting Points | No cracks or damage, all mounting ears intact |
| ✅ Pulley Condition | Pulley spins freely with no wobble or damage |
| ✅ Electrical Connections | All terminals clean and undamaged |
Compatibility — What Vehicles Does This Part Fit?
Based on interchange #192, this part fits the following vehicles. Always confirm fitment with your mechanic before purchasing.
| Year(s) | Make | Model | Notes |
|---|---|---|---|
| 2007 | GM Trucks | Silverado 1500 | 145-amp option KG3 – Contact us for full compatibility list |
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 2007 Silverado 1500?
This alternator is specifically from a 2007 Silverado 1500 with the 145-amp KG3 option. Contact us with your VIN to verify exact fitment as there may be multiple alternator options for your year and model.
How do I know if my alternator is failing?
Common signs include dimming headlights, battery warning light, slow engine cranking, or electrical accessories not working properly. A failing alternator will eventually leave you stranded with a dead battery.
What is the difference between 145-amp and other alternator ratings?
The 145-amp rating indicates this alternator’s maximum electrical output capacity. Higher amperage alternators are typically used on vehicles with more electrical accessories or towing packages.
Is this alternator tested before shipping?
Yes, we test all alternators for proper electrical output and inspect all mechanical components. This unit has been verified to meet OEM specifications and is ready for installation.
What tools do I need to replace an alternator?
Basic hand tools including wrenches, sockets, and possibly a serpentine belt tool. The job typically requires disconnecting the battery, removing the drive belt, and unbolting the alternator from its mounting bracket.
Can I core exchange my old alternator?
Contact us to discuss core exchange options. We often accept rebuildable cores which can reduce your total cost for this replacement alternator.
Related Parts & Resources
OEM Part Numbers & Cross-Reference
Looking for this part by number? Here are the reference numbers:
| Interchange Number | 192 |
| GM Option Code | KG3 |
| Output Rating | 145 Amp |
| Stock Number | 1013257953 |
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 | $80-$120 | 30–60 days | Varies in quality and testing |
| 603 Auto Salvage | $65 | 6-Month Warranty | Tested, Grade A, ships in 24hrs |
Installation Notes
- Disconnect the negative battery cable before starting work to prevent electrical shorts
- Take a photo of wire connections before removal to ensure proper reconnection
- Check serpentine belt condition and replace if cracked or frayed during alternator replacement
- Ensure all electrical connections are clean and tight to prevent charging issues
- Test charging system operation after installation to verify proper alternator function
🔍 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
- 6-Month 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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