Welcome to 603 Auto Salvage, We Sell Quality Used Auto Parts at Affordable prices.
Welcome to 603 Auto Salvage, We Sell Quality Used Auto Parts at Affordable prices.
$75.00
Grade A used A/C air compressor from a 2003 GM Sierra 2500 with 6.6L engine. This OEM compressor has been inspected and is ready to ship. Interchange #645, Stock #1127248964.
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This used A/C air compressor was removed from a 2003 GM Sierra 2500 equipped with a 6.6L engine. The compressor has been thoroughly inspected by our technicians and is currently on the shelf ready to ship. This OEM part ensures proper fit and function for your vehicle’s air conditioning system.
A/C compressors are essential components that pressurize and circulate refrigerant throughout your vehicle’s air conditioning system. Common reasons for replacement include internal seal failure, clutch bearing wear, electrical issues with the clutch coil, or mechanical damage from lack of lubrication. When your A/C compressor fails, you’ll typically notice warm air from the vents, unusual noises, or visible refrigerant leaks.
603 Auto Salvage maintains over 50,000 quality used parts in stock from more than 1,100 vehicles. Our experienced team can help you find the right part for your specific application. Browse our online inventory or give us a call to speak with our knowledgeable parts specialists about your A/C compressor needs. 50,000+ parts in stock from over 1,100 vehicles. Contact us or call (603) 392-7313 for anything you need.
| Part | A/C Air Compressor Assembly |
| Interchange # | 645 |
| OEM Part Number | Contact for OEM# |
| Side | N/A |
| Part Grade | A — Grade A – Good working condition, 130K miles, inspected and ready to ship |
| Warranty | 90-Day Warranty (Standard coverage for mechanical A/C components with moderate mileage) |
| Type | Used OEM |
| Year / Make / Model | 2003 GM TRUCKS SIER25 |
| VIN | N/A |
| Vehicle Stock # | 1127248964 |
Every part at 603 Auto Salvage is inspected before listing. Here is what was verified on this A/C Air Compressor Assembly:
| ✅ Clutch Operation | Clutch engages and disengages properly |
| ✅ Pulley Bearing | Smooth rotation with no excessive play |
| ✅ Refrigerant Ports | Clean threads and no damage to fittings |
| ✅ Electrical Connections | Clutch coil connector intact and functional |
| ✅ Housing Integrity | No cracks or signs of refrigerant leakage |
| ✅ Mounting Points | All mounting brackets and bolt holes undamaged |
Based on interchange #645, this part fits the following vehicles. Always confirm fitment with your mechanic before purchasing.
| Year(s) | Make | Model | Notes |
|---|---|---|---|
| 2001-2007 | Chevrolet | Silverado 2500HD | 6.6L Duramax diesel engine |
| 2001-2007 | GMC | Sierra 2500HD | 6.6L Duramax diesel engine |
| 2003-2007 | Chevrolet | Silverado 3500 | 6.6L Duramax diesel engine |
| 2003-2007 | GMC | Sierra 3500 | 6.6L Duramax diesel engine |
| 2006-2010 | Chevrolet | Kodiak | 6.6L Duramax diesel engine |
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
Yes, this compressor is compatible with 2001-2007 Silverado 2500HD models equipped with the 6.6L Duramax diesel engine. The interchange number 645 confirms proper fitment for your vehicle.
It’s recommended to replace the receiver/drier and expansion valve when installing a replacement compressor. You should also flush the A/C system to remove any contaminants that may have caused the original compressor failure.
Common failure causes include refrigerant leaks leading to low oil circulation, clutch bearing wear from normal use, electrical issues with the clutch coil, and internal seal deterioration over time. Regular A/C system maintenance helps prevent premature failure.
This compressor has been inspected and is ready for installation. However, you’ll need to add the proper amount of PAG oil and evacuate/recharge the system with refrigerant after installation.
Shipping costs vary by location: New England $34-49, Northeast $49-64, Southeast $64-79, Midwest $79-89, Southwest $89-99, and West Coast $99-110.
You’ll need basic hand tools, an A/C manifold gauge set, vacuum pump, refrigerant recovery equipment, and torque wrench. Professional A/C service equipment is required for proper evacuation and recharge procedures.
Looking for this part by number? Here are the reference numbers:
| Interchange Number | 645 |
| Stock Number | 1127248964 |
| Donor Vehicle | 2003 GM Sierra 2500 6.6L |
| Location | TRAILB19 |
| Source | Price Range | Warranty | Notes |
|---|---|---|---|
| Dealer (New OEM) | $450-650 | 1 year | Brand new, longest wait time |
| Aftermarket | $200-350 | Varies | Non-OEM fitment, quality varies |
| Other Salvage Yards | $100-150 | 30–60 days | Varies in quality and testing |
| 603 Auto Salvage | $75.00 | 90-Day Warranty | Tested, Grade A, ships in 24hrs |
🔍 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
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.
Ready to order? Call (603) 392-7313 or add to cart above. We are here to help.
| Weight | 18 lbs |
|---|
RatingGreat yard ! Parts aren’t damaged and it is the cleanest yard I’ve ever seen! The staff is pretty amazing too !!
good lead times and customer service, look forward to more business here
I'm replacing damaged panels on my 2006 Ridgeline on a tight budget so I may quickly sell it and they were so helpful and priced better than anyone else in the area. Raised a glass of scotch for these ladies! Thanks again!
Great service! The best price and condition for the Porsche Cayenne parts needed to finish the job. Radiator core support and headlight fit perfectly!
Drove from new york, Julie was a sweetheart asked questions to make sure that my ECU was the proper part number and was compatible with my manual Accord, price was phenomenal I highly recommend them for any parts your car may need. Definitely the best salvage yard around
Great experience at 603 Auto Salvage! ⭐️ The owner and employee were both extremely helpful and easy to work with. I was able to find everything I needed in one stop — about seven different items — which saved me a lot of time and hassle. Good selection, fair pricing, and friendly service. Definitely recommend checking them out if you're looking for parts. I’ll be back again! 👍🔧🚗
I had a great experience with 603 Auto Salvage Inc. The team was very helpful and quickly found the exact part I needed. They kept me informed and made the pickup process easy. The price was very fair, and the service was excellent. I would definitely recommend them and will use them again if I need parts in the future.
Excellent support, she helped me with my order service was fast and exactly what I needed.Very Professional.
The customer service at 603 was great. They found the part I needed very quickly and promptly notified me when it was ready to be picked up. There wasn’t any other place in the area that had what I needed. The price was very good also. I will be using them again for sure.
I had a great experience. They didn’t just look up the part I needed they took the time to explain how to install it and made sure I understood everything. I even received a call back, which I really appreciated. Everyone I spoke with was friendly and patient, and I never felt brushed off. I truly felt taken care of. Highly recommend if you want knowledgeable people who actually care about helping you. Kristy Thanks Guys!
Drove from Connecticut to get here. Had parts for a relatively rare car that dozens of other places didn't have. I got a hood, fender and bumper cover that were in near mint condition for a fifteen year old car. They pulled all the parts for me and had everything ready within an hour. Very reasonably priced. Highly recommend
Exceptional service, large selection of parts, will come back if more Audi parts are needed. A++
They are Very Quick and Very Affordable for their parts. Went in there for my girlfriend, she needed an alternator, they had it ready at the desk by the time i got there. Thanks guys!
Awesome place I drove over 2hrs they gave me a super great deal!!! Super Friendly sent me a bunch of pictures.I would Definitely do business with them again!!!!!
Confianza y buen servicio ala comunidad ispana
If you’re not getting your car parts here then what are you doing?!! The best reliable car place in New Hampshire❤️ 100000% recommended
Great service! Picked up a door for my car and it was in good condition.
Purchased a wheel they had it ready the next day , not damaged, and ready for pickup. Julie was helpful at the front desk giving a specific time frame and held to it.
Super Friendly, Easy to work with, Accurate inventory, and great prices
Great place, have a wide selection of cars. They definitely will have what you need if not they will help a ton!
Great customer service and great prices!!! I purchased an engine that was in excellent condition and could not beat the price. The woman at the desk, Julie, was very helpful and knowledgeable. They put the engine on the back of the truck for me And secured it as well. I highly recommend this place. I will be coming here for any parts I need.
Eldy was awesome he helped load my car door and was informative. The lady Julie at the counter was super helpful and got back to me fast regarding the replacement door I needed. Highly recommended
Bought a seat belt from here and a seat great service very polite will recommend
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