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- – 6-month term
- – No impact on credit to apply
- – Instant approval decision
- – Secure and straightforward checkout
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FREE 30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
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Availability:
Only 1 left in stock, order soon!
Arrives
Thursday, Nov 12
At a glance
- Condition
- New
- Model
- 7127K
- Dimensions
- 8.9 x 8.2 x 8 in
- Weight
- 12.67 lb
- Exterior
- Machined
- Position
- Center
Features 5
- Package Dimensions: 20.574 cm (L) X 20.955 cm (W) X 22.86 cm (H)
- Package Type: Auto Part
- Package Quantity: 1
- Country Of Origin: United States
- Model Number: 7127K
Specs 10
| Manufacturer | ALT NAT140AMP CVY/ |
|---|---|
| Brand | Tuff Stuff |
| Model | ALT NAT140AMP CVY/ |
| Item Weight | 12.67 pounds |
| Product Dimensions | 8.9 x 8.2 x 8 inches |
| Item model number | 7127K |
| Exterior | Machined |
| Manufacturer Part Number | 7127K |
| OEM Part Number | 7127K |
| Position | Center |
No specs match.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Thursday, Nov 12
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
- Klarna Financing
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- Afterpay Financing
- Zip Pay in 4
- Financing through Apple Pay
- Financing through Google Pay
Learn more about financing & leasing here.
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Tuff Stuff 140 amp alternator.
Quality product. Just installed and works great.
Reviewed in the United States on August 15, 2025 by Randy S.
Excellent quality, fit and function
Excellent quality, fit and function! If you are running a lot of high draw components on your classic car (A/C, EFI, quality stereos etc.), be sure and upgrade to a high output alternator like this one! Also upgrade the wiring too to prevent overheating and to insure long life for your alternator and connected components. Great product!!!
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Reviewed in the United States on March 26, 2018 by Doug
Make sure the housing bolts are tight...
It charges really well and never skipped a beat, but one week after installation, it started vibrating horribly. The cause of the vibration was due to the housing bolts not being either torqued properly, or the lack of thread locker being applied to the bolts. Also, the front housing bearing was loose and allowed the armature to move back and forth. The company approved a refund with no hesitation, and I did purchase another to replace it. I will be applying thread locker to the bolts, however.
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Reviewed in the United States on May 31, 2019 by Andrew
Good value
I installed this alternator in a 1971 Chevy C10 as a single wire alternator with the v-groove pulley. It fits perfectly and works fine. I do have to say that this is the second 140 amp alternator. The first one ended up with a bad regulator. Fortunately it was in warranty and I was provided a replacement without hesitation. This replaced a Tuff Stuff 80 amp alternator which is still working just fine and I will keep it as backup. Lastly, I have a voltmeter in my dash instead of an ammeter and with this alternator the voltage reading does fluctuate where the 80 amp didn't. I don't know if the regulator is more sensitive to the load change or not. So far the fluctuation never drops below 12 volts and always returns to normal once the extra load lessens. That is the only reason I gave it 4 stars otherwise I am quite happy with it.
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Reviewed in the United States on March 10, 2021 by Andy Smith
Excellent item!
Fast shipping. Excellent product. Easy to install. Worked well!
Reviewed in the United States on November 11, 2018 by David F. Sanchez
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Reviewed in the United States on June 24, 2019 by Garrett M.
Great buy
Great, just what I needed
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