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Mechman high output alternators · Authorized dealer
The GS400 was a V8 sport sedan that surprised a lot of people at stoplights, and enthusiasts still keep them as understated weekend cars. A Lexus GS400 high output alternator supports the electronics those owners add. Mechman lists a 240 Amp unit for the 1998-2000 GS400 with the 4.0L V8, a focused fit for a short production run.
GS400 owners tend to modify with restraint: a better audio system that stays hidden, brighter headlights, an aftermarket gauge or two and perhaps a cooling fan upgrade for summer track days. On a car more than two decades old, the original charging system has worked hard for a long time, and an added amplifier increases the demand further. A Lexus GS400 high output alternator gives the 4.0L V8 fresh charging capacity for all of it.
The unit here is a 240 Amp Mechman alternator for the 1998-2000 GS400 with the 4.0L engine. It suits a quality audio upgrade, lighting improvements and everyday accessories. Mechman high output alternators are built as direct replacements, so installation follows the factory mounting. Confirm your year and engine in the vehicle finder above the products before ordering.
The Lexus SC400 alternators page lists the same unit for the V8 coupe. A fresh battery makes a good companion upgrade, and the Lexus alternators page covers other models.
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