180 Amp HP High Output Alternator (GMC Sierra 1999 6.6L Duramax Diesel)
Our HP series high-output alternators are the ultimate upgrade when you need the absolute biggest and most sophisticated high output alternator on the planet. All of our HP series alternators are designed for extreme reliability. When you need the most extreme idle output with the most sophisticated integrated alternator-monitoring system to prevent thermal failures is where the HP alternator delivers. Every DC Power product we sell is held to the strictest quality standards in the industry. We only use 100% brand new USA made components along with one of the most rigorous testing before each individual alternator leaves our shop. Each HP series alternator comes standard with our custom hard-anodized billet aluminum pulley and 2-year replacement warranty. If you're looking for a significant overall increase in top end and idle output, the HP series alternator is your solution.