![ARCO Marine Zeus A225S 3.15 Alternator w/Isolated Ground (Common Rail) Terminal Block [4013]](https://cdn.shopify.com/s/files/1/2785/3654/files/107521XL.jpg?v=1740663468)
Pay in installments of $109.72 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 21 - Jul 26
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
ARCO Marine Zeus A225S 3.15 Alternator w/Isolated Ground (Common Rail) Terminal Block [4013]Zeus A225S 3. 15 Alternator with Isolated 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, running 8 20% cooler than incumbent alternators due to: Heat shedding coatings Rectifier located on housing
Zeus A225S 3.15 Alternator with Isolated 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, running 8-20% cooler than incumbent alternators due to:
- 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. Our advanced coating absorbs less heat, keeping the A225S cooler for sustained amperage output.
- Use the ARCO Zeus Bluetooth Alternator Regulator for maximum performance or lithium battery charging.
- SAE J1171 Certified.
- Models are available with an internal/external voltage regulator.
- Proudly made in the U.S.A.
Technical Specifications:
- Voltage - 12v
- Field Type - P
- Rotor Poles - 16
- Stator Size - 130mm
- Frame Size - Small
- Weight - 12 lbs/5.4 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) - 254 Amps
- Sustained Cruising Output (Hot, 6,000 RPM) - 187 Amps
- Sustained Idle Output (Hot, 3,000 RPM) - 157 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
4.2 ★★★★★
Based on 17 reviews
Sort
Product Reviews
★★★★★ 5
Easy to Put Together -
Color: Black
This was easy to put together. It is light weight. I use it in my spare room. And I have a light weight blanket I display, hanging over it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 27, 2026
★★★★★ 5
Really great product
Color: Grey
It's really great it's just a bit wobbly.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 20, 2026
★★★★★ 3
Does not withstand any breeze.
Color: Grey
Not sturdy, tips over easily due to a small base and ultra light weight. Instructions were not much help but it’s pretty easy to figure out without them. Material is as expected.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 14, 2026
★★★★★ 1
Quick to arrive, quick to disappoint
Color: Black
Where do I start. Well. The only thing going for this divider was the fast shipping and affordability. But please be careful with the latter. This is exactly the type of product that teaches you that you get what you pay for. The assembly was ridiculous and lacking a lot of information and the tolerances to several of the pole pieces were incorrect. It is also very flimsy when assembled and I do not recommend buying this unless you absolutely need an urgent room divider. Best to save your money and get something sturdier.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
★★★★★ 4
Easy to assemble
Color: Grey, Color: Grey
Staying in a flex bedroom for few nights and got it to get some more coverage, super fast and easy to assemble, no tools or muscles needed, just pay attention to the ends of the bars : 2 vertical bottoms were marked, 4 horizontal ends are different to be easily attached to vertical frame; very lightweight but sturdy, nice shade of gray, the room still feels bright snd spacious; matches the description
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 5, 2026