High Output Alternator for Buick Lucerne (2006-2008) 3.8L
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High-Amp 250A Alternator for 2006-2008 Buick Lucerne (G-Body)
What it Does: The 250-amp high-output alternator replaces the factory charging unit on the 2006-2008 Buick Lucerne to eliminate voltage drop and deliver stable current for heavy electrical demands.
The Stock Buick Lucerne Charging Deficiencies
The factory 125-amp charging system on the GM G-body Lucerne struggles under additional electrical loads. High-draw aftermarket accessories, audio amplifiers, or modern auxiliary electronics quickly saturate the stock stator windings, generating excessive thermal resistance inside the case. When operating under continuous load, the OE rectifier diodes heat-soak rapidly, inducing significant parasitic voltage sag below 12.6V at idle, which degrades battery state-of-charge and causes headlight flicker.
The Engineering Solution
This 250-amp upgrade utilizes heavy-duty copper windings and a high-efficiency rotor/stator design to maximize amperage output at lower RPMs without sacrificing top-end durability. Built with an oversized internal heat sink and heavy-duty avalanche diodes, this unit resists thermal degradation under continuous duty cycles. It mounts directly into the factory brackets of the Buick 3800 Series III (L26) engine, providing pure bolt-on reliability while maintaining correct belt alignment with OEM part numbers 104210-4360 and 25764632.
What's Included
- 1 x 250-Amp High Output Alternator
Technical Specifications
| Fitment | 2006-2008 Buick Lucerne |
|---|---|
| Engine / Chassis | 3.8L 3800 Series III (L26) / GM G-Body |
| Stock Output | 197 hp / 227 lb-ft |
| Replaces OEM Part # | 104210-4360, 210-0577, 25764632, 15593, 11180N, 11180 |
Compatibility
- 2006 Buick Lucerne CX 3.8L V6 (L26)
- 2006 Buick Lucerne CXL 3.8L V6 (L26)
- 2007 Buick Lucerne CX 3.8L V6 (L26)
- 2007 Buick Lucerne CXL 3.8L V6 (L26)
- 2008 Buick Lucerne CX 3.8L V6 (L26)
- 2008 Buick Lucerne CXL 3.8L V6 (L26)
Frequently Asked Questions & Fitment Warnings
Does this fit the G-Body Lucerne?
Yes, this is a direct fit for the 2006-2008 Buick Lucerne equipped with the 3.8L L26 V6 engine. Does not fit 4.6L Northstar V8 models.
Do I need to upgrade the primary charging wire?
Yes, running an upgraded 1/0 AWG primary charging wire (Big 3 upgrade) is highly recommended to safely carry the 250-amp load to the battery.
The Buick Reliability Standard
Engineered for full-size luxury cruisers, this charging unit restores complete electrical stability, ensuring your comfort controls, lighting systems, and auxiliary electronics operate without straining your vehicle's factory wiring.
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