High Output Alternator for Buick Regal (2014-2017) 2.0L

High-Output 250-Amp Alternator for 2014-2017 Buick Regal (Epsilon II)

What it Does: The High Output Alternator replaces the factory charging unit on the 2014-2017 Regal to supply 250 amps of stable direct current, preventing electrical voltage sags under high load.

The Stock Buick Regal Charging System Weakness

Factory alternators on the Epsilon II platform are limited to standard output ratings (130-140 amps) that fail to keep pace with modern auxiliary electrical demands, high-end audio setups, and auxiliary cooling fans. Under prolonged load and heavy underhood heat soak generated by the turbocharged LTG engine, the factory internal diode bridge experiences thermal fatigue. This leads to rectifier breakdown, flickering cabin electronics, erratic sensor readings across the vehicle's CAN-bus network, and reduced ignition coil dwell efficiency under wide-open throttle.

The Engineering Solution

Engineered for high current delivery, this direct-fit 250-amp alternator features precision heavy-gauge copper windings and high-temperature avalanche diodes to combat thermal degradation. Built in the USA, it utilizes an upgraded internal voltage regulator that maintains exceptional amperage at low idle RPMs, preventing system voltage drop below 13.8V. Designed to mount directly to factory GM engine brackets, it interfaces with existing serpentine drive belts and replaces OEM part numbers 104210-1960, 13592811, and 22892569 without modification.

What's Included

• 1 x 250-Amp High Output Alternator

Technical Specifications

Compatibility

• 2014 Buick Regal Base, Premium, GS (2.0L Turbo L4)
• 2015 Buick Regal Base, Premium, GS (2.0L Turbo L4)
• 2016 Buick Regal Base, Premium, GS (2.0L Turbo L4)
• 2017 Buick Regal Base, Premium, Sport Touring, GS (2.0L Turbo L4)

Frequently Asked Questions & Fitment Warnings

Does this fit the Epsilon II Regal?

Yes, this is a direct fit for the 2014-2017 Buick Regal equipped with the LTG 2.0L turbocharged engine.

Do I need to upgrade my charging cables with this 250A unit?

While this alternator connects to OEM plugs, performing a "Big 3" battery and ground cable upgrade (0-gauge or 4-gauge wiring) is highly advised to safely transmit full 250-amp output without thermal line resistance.

The Buick Regal Electrical Standard

The sensor-heavy systems in modern GM platforms require strictly regulated, ripple-free power to protect microprocessors from signal degradation, ensuring reliable electrical performance throughout high operating temperatures.