![ARCO Marine Zeus A275L 3.15 Alternator w/Case Ground (Common Rail) Terminal Block [4020]](https://cdn.shopify.com/s/files/1/0469/0945/6544/files/107507XL.jpg?v=1763589285)
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Description
ARCO Marine Zeus A275L 3.15 Alternator w/Case Ground (Common Rail) Terminal Block [4020]Zeus A275L 3. 15 Alternator with Case Ground (Common Rail) & Terminal Block The highest power output alternator in its size class. Features: Engineered for high energy production. Suitable for marine, RV, military, and commercial applications. Rapidly charges large battery banks. Coolest operating temperatures for increased performance. Heat shedding coatings Rectifier located on housing exterior Dual cooling fans OEM components Optimized for
Zeus A275L 3.15 Alternator with Case Ground (Common Rail) & Terminal Block
The highest power output alternator in its size/class.
Features:
- Engineered for high energy production.
- Suitable for marine, RV, military, and commercial applications.
- Rapidly charges large battery banks.
- Coolest operating temperatures for increased performance.
- Heat shedding coatings
- Rectifier located on housing exterior
- Dual cooling fans
- OEM components
- Optimized for performance at idle speeds.
- Reduces the need for a generator by creating additional power with your engine.
- Unleash peak performance with E-Coat/Cerakote, keeping the A275L cooler for sustained amperage output.
- Use the ARCO Zeus Bluetooth Alternator Regulator for maximum performance or lithium battery charging.
- SAE J1171 Certified.
- Models available with internal/external voltage regulator.
- Proudly made in the U.S.A.
Technical Specifications:
- Voltage - 12v
- Field Type - P
- Rotor Poles - 16
- Stator Size - 138mm
- Frame Size - Large
- Weight - 14.9 lbs/6.7 kg
- Regulation - Internal/External (Internally regulated with adaptor for optional external regulation.)
- Output Voltage - 14.1v (Default)
- Finish - (Black) Cerakote or E-coating
- Cut-In RPM - 1,061 Alternator RPM
- Maximum Alt RPM - 19,000
- Battery Post - M8 Thread Post, Side Mount
- Standard Pulley - 49K6 (6-groove, 49mm)
- Pulley Mount - 17mm diameter shaft, 25mm long, threaded M17 x 1.5
- Pulley Hardware - M17 x 1.5 x 24mm nut, w/ 18mm ID x 29mm OD washer (Included)
- Diodes - 6 positive, 6 negative, 50A Rated, Avalanche
- Max Output (Cold, 9,000 RPM) - 311 Amps
- Sustained Cruising Output (Hot, 6,000 RPM) - 227 Amps
- Sustained Idle Output (Hot, 3,000 RPM) - 198 Amps
- Max Continuous Operating Temperature - 110°C / 230°F
Mounting Application:
- Must be used on Yanmar Common Rail introduced after 2013 (JH-CR, 3JH40, 4JH45, 4JH57, 4JH80, 4JH110)
Quick Guide (pdf)
Brochure (pdf)
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 1
junk
radio runs hot even when not transmitting. programming cable does not work with win 11. it does work with chirp once you find a 10 year old pc to program it. programming from the front panel seems impossible. knobs are made of rubber and keep falling off. i am sure i will find more once i use it for a while if it lasts.
Update: I was able to trudge through the manual and make the changes i needed from the front panel, took a while with the darn buttons falling off. Manual is not good but with some patience you can work through it. If you need a tiny radio and your budget allows i would look at the anytone 778.
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Reviewed in the United States on February 7, 2024
★★★★★ 5
good radio for the money
THE GOOD.. These are very good radios for the money, we currently have 6 of these the oldest is probably 3 years old, we can mounter all local emergency services, easily get into all of our local ham 2 meter and 70 cm repeaters. It IS NOT part 95 compliant by the FCC which means it IS NOT LEGAL for GMRS use, but it can broadcast and receive on all FRS, MURS and GMRS frequency's, use at your own risk on these frequency's. One of these radio's are in a ranch jeep it is our oldest radio, this thing has lived in hot dusty environment, been soaked with water and mud and has held up great. Easy to program with CHIRP.
THE BAD.. They claim the they are 25 watt VHF 20 watt UHF, The ones we have only put out 18-19 watts, which is plenty of power for most repeater operation. The data port and speaker port are side by side on the back if you have your radio mounted to were you cant see the rear and put the programing cable into the speaker port it WILL blow your speaker.
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Reviewed in the United States on July 24, 2021
★★★★★ 5
all ok
all ok
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Reviewed in the United States on May 16, 2026
★★★★★ 3
It works, quality could be better
I was going to use this on a trip from Boise to Alaska as a multi use radio to listen to LADD, FRS, GMRS, and talk on Ham frequencies. After programming it and playing around with it, I decided to take my FT7250D.
Like:
Small size
Lots of memories
Audio is OK
Programming cable included.
Multi frequency monitoring, if you’re into that (I’m not).
Dislike:
Quality - knobs are soft rubber and come off easily.
4 frequency displays. Why? Cannot turn them off.
Display text is small because of the 4 displays.
Accessing features and menu items can be confusing.
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Reviewed in the United States on October 5, 2021
★★★★★ 5
Superior functionality!!!
Why did you pick this product vs others?:
The size, functionality, and ease of programming make this HAM radio perfect for daily mobile or portable use!!! Superior quality throughout!!! Thank you!!!
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Reviewed in the United States on July 5, 2025