The alternator I bought from you doesn't work.

Each alternator is bench-tested before shipping. Apparent failure is usually due to ordering the wrong unit, shipping damage, or installation mistakes. Verify the part number, inspect for damage, and review the proper installation steps (Technical Tip TT-648) before contacting support.

The alternator I bought from you doesn't "put out".

Low-output symptoms are often caused by factors outside the alternator. Measure voltage directly at the rear of the unit with a digital meter; if readings seem low, check the common issues listed below or return the alternator for a free bench test.

High-output alternators ship with an overdrive pulley that may require a belt about 1 inch shorter than stock. Use a quality, oil-free belt to prevent slip and ensure full output.

Regulator plug not plugged in, not seated properly or pinched wire

Make sure the small regulator plug on the alternator is fully seated and oriented correctly. A pinched or missing connection will prevent charging. Self-exciting models (e.g., Fitzall 220A+) do not use this plug.

Battery warning light bulb in dash missing, blown or bad connection

Some vehicles rely on the dash battery-warning bulb to excite the alternator. A blown, missing, or poorly connected bulb can cause a no-charge condition.

Customer changed alternator pulley

Replacing the supplied overdrive pulley with a larger-diameter pulley slows the alternator and decreases charge output.

Vehicle crankshaft pulley diameter too small

Aftermarket under-drive crank pulleys spin accessories more slowly and can severely reduce alternator output. Ensure the crank pulley is at least OEM size.

Main vehicle charge wire too small or not upgraded

Factory charge wiring is sized for OE amperage. When loads rise, upgrade to a heavier-gauge cable such as the Big Zero kit to avoid voltage drop and false low-output symptoms.

Too many grounds, insufficient grounds, or just bad wiring

Improper, corroded, or excessive grounds-as well as undersized or poorly crimped wires-can cripple alternator performance. Have a qualified technician inspect and correct wiring.

Bad, old, weak, damaged or cheap battery

Weak or inexpensive batteries-especially some gel-cell types-may not accept the alternator's current. Use a healthy wet-cell battery with sufficient cold-cranking amps.

Alternator possibly damaged during installation

High-output units contain sensitive electronics. Skipping the recommended battery-disconnect procedure or other steps in Technical Tip TT-648 can damage the regulator and cause no-charge conditions.

The alternator I bought from you doesn't fit.

Direct-fit models require no hardware changes. Universal Fitzall 220A+ units need custom brackets and may require a shorter belt.

Do you sell brackets, spacers or hardware to mount the Fitzall on my particular application?

Due to the vast number of vehicles, PowerBastards does not supply custom mounting hardware. Most customers fabricate brackets themselves or hire a qualified shop.

I tested my alternator and it only makes 30A.

Alternators supply only the amperage the system demands. Clip-on amp meters can be inaccurate; 30 amps may be normal at low load. Send the unit in for a free certified output test if in doubt.

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High Output Alternators for Freightliner

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At PowerBastards, we know how much you rely on your Freightliner to keep your business moving. Whether you're hauling cross-country, running local routes, or managing a fleet, dependable electrical power is non-negotiable. Our High Output Alternators for Freightliner trucks are designed to deliver the unmatched performance, reliability, and efficiency your operations demand.

Why Choose High-Output Alternators for Freightliner?

Every Freightliner faces serious electrical demands, from advanced navigation systems to powerful lighting and refrigeration units. A high-output alternator for Freightliner ensures you never fall short on power, even when running multiple accessories at once. These alternators are built to handle the toughest conditions and heavy workloads, helping drivers avoid unexpected electrical failures and costly downtime.

When you upgrade to a Freightliner high amp alternator, you're investing in smoother runs, longer battery life, and protection for all onboard electronics. Our Freightliner performance alternator options are specially engineered to provide steady voltage and consistent power output, no matter how far or how long you drive.

Engineered for Heavy-Duty Performance

A high amperage alternator for Freightliner isn't just a replacement — it's an upgrade that supports the heart of your truck's electrical system. Every PowerBastards alternator undergoes rigorous testing to ensure it can stand up to demanding commercial applications.

Our Freightliner alternator upgrade solutions are crafted using high-quality components that deliver superior durability and longevity. Whether you operate a Freightliner Cascadia, M2 106, or even older Sprinter models, we have an aftermarket alternator Freightliner drivers trust to keep them on schedule and out of the shop.

The Benefits of Upgrading Your Freightliner Alternator

Upgrading to a Freightliner high amp alternator means:

Stronger electrical capacity: Support extra lighting, HVAC systems, entertainment setups, and other accessories without flickering lights or voltage drops.
Improved reliability: Reduce the risk of unexpected breakdowns caused by electrical overloads.
Enhanced battery life: By maintaining a consistent charge, you help extend the lifespan of your batteries and protect other components.
Easy installation: Our alternators are designed for direct-fit installation, saving you time and getting you back on the road faster.

Model-Specific Options to Keep Your Fleet Moving

Every Freightliner model is different from other, and we understand the importance of model-specific solutions. That's why our lineup includes;

High Output Alternators for Freightliner Cascadia,
High Output Alternators for Freightliner M2 106,
Alternators for older Sprinter models, among others.

Each alternator is designed to fit seamlessly and deliver optimal performance right from the start. If you have multiple trucks or run a fleet, our team is ready to help you find the perfect match for every vehicle, ensuring every rig stays powered and productive.

At PowerBastards, we combine advanced engineering with a commitment to quality, offering heavy-duty alternators Freightliner drivers can rely on day in and day out. Explore our range of High Output Alternators for Freightliner today and keep your fleet rolling with confidence.