If your alternator’s overcharging, undercharging, or causing battery issues, this voltage regulator could be the fix. It’s compatible with Buick LeSabre (2004-2005, 140A), Cadillac DeVille (2001-2005), Seville (2001-2004), and Pontiac Bonneville (2004-2005, 3.8L & 4.6L). It replaces part numbers like 126600-0030, IN6003, and VR-H2005-94. This is a 14.8V B-circuit regulator with soft-start, field lamp short protection, and diagnostic features for over/under voltage and sense open indication. Made from all-new components, it ensures stable alternator output, protects your electrical system, and extends battery life. Installation is straightforward if you’re familiar with alternator repairs. Backed by a one-year unlimited-mileage guarantee. A reliable, affordable solution to keep your charging system in check. Always verify fitment for your specific model and alternator amperage before ordering. Drive with peace of mind!
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