![ARCO Marine Zeus A225S Vortec Alternator w/Terminal Block [4017]](https://cdn.shopify.com/s/files/1/2785/3654/files/107333XL.jpg?v=1740662686)
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Ships within 48 hours · Estimated delivery Jul 4 - Jul 9
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Description
ARCO Marine Zeus A225S Vortec Alternator w/Terminal Block [4017]Zeus A225S Vortec Alternator with 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. Runs 8 20% cooler than incumbent alternators due to: Heat shedding coatings Rectifier located on housing exterior Dual cooling fans OEM
Zeus A225S Vortec Alternator with 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. Runs 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. This translates to more amperage for sustained periods.
- For maximum performance or lithium battery charging, use an ARCO Zeus Bluetooth alternator regulator.
- SAE J1171 Certified.
- Proudly made in the U.S.A.
Technical Specifications:
- Voltage - 12v
- Field Type - P
- Rotor Poles - 16
- Stator Size - 130mm
- Frame Size - Small
- Weight - 12lbs/6.7kg
- Regulation - External Only
- 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
Mounting Application:
- Replaces Mando type alternators using Vortec/ GM pad mounting feet (Found on many Mercruiser and Volvo Penta 3.0GLM, 3.0GLP, 4.3GXi, 5.7GiL, 5.7GXiL Marine Engines.) (GM Blocks)
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
4.0 ★★★★★
Based on 1178 reviews
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Product Reviews
★★★★★ 4
Right for the price!
Color: Brown, Size: Large, Color: Brown, Size: Large
True to size. Pants are thin, but it aligns with price
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 3, 2026
★★★★★ 1
Size up
Color: Brown, Size: XX-Large
It's not true size.You have to go up
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 20, 2026
★★★★★ 5
Great quality tux for the price
Color: White, Size: XX-Large, Color: White, Size: XX-Large
I was pleasantly surprised with the quality and fit right out of the package. The cloth has a subtle pattern that gives it an upscale look without being flashy, and overall it feels far nicer than I expected at this price.
Jacket:
The jacket has a good weight and thickness, so it feels solid and well-made. Sleeve length was perfect right out of the box, which almost never happens for me. The only fit issue was a bit of snugness in the chest and underarm area, but I have broad shoulders and a larger chest, so that’s not unusual. My dress shirt sleeve length is 36.5", so I went with an XXL instead of my usual XL to make sure the sleeves were long enough. That was the right call, because it’s always easier for a tailor to size something down than to try and make something too small work. Aside from a quick tweak in the chest, this could easily be worn straight out of the package.
Pants:
The pants are noticeably thinner than the jacket and you can kind of see through them, so you’ll want to be mindful when choosing undergarments. That said, the lighter fabric is actually a plus for summer outdoor events or warm indoor venues since it will help keep you cool and comfortable. The flexible waistband made them very comfortable, and the fit in both the waist and length was spot on. For reference, I usually wear 38x32 dress pants and these matched perfectly.
Overall:
The quality is excellent for the cost. Even with a minor tailoring bill, my total cost to own this tux will still be less than renting one for a single event. I couldn’t be happier with the purchase and wouldn’t hesitate to pick up another.
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Reviewed in the United States on August 13, 2025
★★★★★ 5
brings me to today’s formal fashion
Color: Brown, Size: X-Large
the peak lapel made me feel sharp for the big family dinner. the slim fit worried me, but it was surprisingly comfy, not too tight on my retired belly. the pockets are deep, which is great for my reading glasses case. didn't need much ironing, just hung it up. a solid, non-fussy suit for us old guys.
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Reviewed in the United States on October 26, 2025
★★★★★ 4
Works for Dress-Up, Not for Formal Events
Color: Brown, Size: Medium, Color: Brown, Size: Medium
This brown tuxedo is about what you’d expect for under $100 on Amazon. The fabric has a pretty brocade pattern but it’s very thin and floppy. The jacket is lined, which helps give it some structure and makes it look a lot nicer, but the pants don’t lay well since they’re unlined and lack structure. The brown color is actually really nice—rich without looking too chocolately, almost leaning burgundy. That said, the fit on both the jacket and pants is surprisingly good. Overall, this is a fun tux for a costume party or one-off dress-up event, but not something you’d want to rely on for a wedding or a truly formal occasion. Just keep your expectations aligned with the price.
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Reviewed in the United States on September 14, 2025