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Mechman high output alternators · Authorized dealer
Many LeSabres arrive as hand-me-downs: low miles, a huge trunk and a 3.8L V6 that refuses to quit. That makes them a favorite base for a sleeper audio build. Mechman offers a Buick LeSabre high output alternator for the 1986-1991 and 2000-2005 cars, so the subwoofers can play hard without dragging the headlights down with them.
The appeal is simple. Nobody expects a beige LeSabre to carry two 12-inch subwoofers and a big amplifier, and the trunk has room for a proper enclosure without giving up the back seat. The catch is current. A system that size asks for more than the charging system was designed to supply, and a Buick LeSabre high output alternator closes that gap.
This page covers two windows. The 1986-1991 3.8L cars use an older family offered in 250, 370 and 400 Amp, including billet housings and finishes such as black, machined and natural. Billet units are machined from solid aluminum for a cleaner look, while cast housings stay closer to stock. Those older listings are marked custom fitment, so check with us first. The 2000-2005 3.8L cars use a separate series in 240 or 320 Amp. Years between those windows are not listed here, so enter your exact year and engine in the finder above to confirm.
Size a Buick LeSabre high output alternator to the system, not the car:
All of them are Mechman high output alternators. Add a Big 3 kit and consider a lithium battery for a big system. The Park Avenue shares these parts and has its own page, as does the big-body Chevrolet Caprice. All GM fitments are in our GM alternator collection.
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Shop Pay Installments: Rates from 0-36% APR. Payment options through Shop Pay Installments are subject to an eligibility check and are provided by these lending partners: affirm.com/lenders. Options depend on your purchase amount, and a down payment may be required. Snap: The advertised service is a lease-to-own agreement provided by Snap RTO LLC. Lease-to-own financing is not available to residents of Minnesota, New Jersey, and Wisconsin. ¹ Not all applicants are approved. While no credit history is required, Snap obtains information from consumer reporting agencies in connection with submitted applications, and your score with those agencies may be affected. Sezzle: Issued by WebBank or Sezzle. See loan agreement for details. Refurbished items are not eligible for financing or leasing.
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