Cart1item

Cart

songzhanhengsongzhanheng2@gmail.com
Dashboard
Hello GuestFor better experience login
Login

Pre-Black Friday Sale : Up to 65% Off | Use code "BLACK"

Offer Expires in

  • 00
  • 00
  • 00
  • 00
Cart1item

Cart

HomeShopAlternatorATG20174 Alternator 3975139 for CUMMINS Engines 4B3.9 6B5.9

Description

ATG20174 Alternator 3975139 66021491 for CUMMINS Engines 4B3.9 6B5.9

ATG20174 Alternator – Heavy-Duty 24V 55A for Cummins & Perkins Engines

🔹 Key Specifications:

  • Voltage: 24V
  • Amperage: 55A
  • Unit Type: Leece Neville
  • Fan Type: External Fan (EF) – Enhanced cooling for heavy-duty use
  • Rotation: Standard CW or CCW (Confirm based on application)

🔹 Compatible Engines:

✅ Cummins:

  • 4B3.9 (Industrial, Marine, Generator)
  • 6B5.9 (Truck, Construction, Agricultural)

✅ Perkins:

  • Multiple models (See cross-reference below)

✅ Other Brands:

  • Caterpillar, JCB, Prestolite, Valeo

🔹 Cross-Reference Part Numbers:

3975139


🔹 Features & Benefits:

✔ 24V System – Ideal for diesel engines in trucks, construction, and marine applications.
✔ External Fan (EF) – Better heat dissipation in high-load conditions.
✔ Leece Neville Design – Reliable performance in harsh environments.
✔ Wide Compatibility – Fits Cummins, Perkins, Cat, and other industrial engines.


🔹 Installation Notes:

  • Check pulley alignment – Ensure proper belt tension.
  • Verify wiring connections – 24V systems require secure terminals.
  • Confirm rotation direction (CW or CCW) before installation.

Warranty

Tianguan provides a 1-year limited warranty for new starters/alternators only. If the problem is caused by Tianguan, the seller pays all shipping costs. The warranty does not apply to improper installation, water/fire damage, modifications, or any natural disasters.

Returns

If the return is caused by the consumer (non-defective return), consumer should be responsible for the shipping fee. The specific fee should be based on the express company you choose. If the item problem is caused by Tianguan, contact us before return item, we will provide refund/exchange/or other way to solve it.No refund/exchange to provide if no notification before sending back items beforehand. If customer received damaged product, customer need to send email to linda@tgautoparts.com in 72 hours of item delivered. Customer need to send pictures/videos(use to proof related issues) in emails, Tianguan will recognize the return reason/confirm the issue. Our team will feedback to customer asap. ◉ Damaged Item Damaged merchandise includes items that are damaged during shipping. If you receive the package and then find shipping damage, please save all packaging material and paperwork and contact us immediately by mail linda@tgautoparts.come or other way you have. ◉ Technical Support We highly recommend professional installation for all of our products. We are not accepting any exchange or returns due to improper installation.

Shipping

Orders usually been shipped out within 1-2business days after payment has been cleared, Delivery in 5-7 working days .Orders made on Saturdays, Sundays, and holidays will be processed on the next business day. If there is any problem on your order, please feel free to contact our team by email(linda@tgautoparts.com) Please ensure that the shipping address you provide is accurate. We are not responsible for undeliverable addresses. Shipping address of P.O. BOX, APO, FPO or State of HI, AK, VI, PR. will not accepted.

Additional information

Weight 5 kg
Dimensions 26 × 22 × 18 cm
brand

CUMMINS

Reviews

There are no reviews yet.

Be the first to review “ATG20174 Alternator 3975139 for CUMMINS Engines 4B3.9 6B5.9”

Your email address will not be published. Required fields are marked *