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Mechman high output alternators · Authorized dealer
Long, rear-wheel drive and V8 powered, the Roadmaster has a loyal following, especially the wagons. Many are getting gentle restomods: modern head units, amplifiers, LED lighting and electric fans. Each Buick Roadmaster high output alternator on this page is a Mechman unit listed for 1991-1996 cars with the 5.0L or 5.7L V8. Enter your year in the finder above to see yours.
A Roadmaster gets driven on long highway trips, often with a full load of family and gear. Owners add a stereo that can fill that big cabin, swap to electric cooling fans and brighter lights, and sometimes tow. Every one of those upgrades adds draw. A Roadmaster high output alternator gives the car charging capacity to match.
The Roadmaster splits into two groups. Cars from 1991 to 1993 use one alternator family, and 1994-1996 cars use another. Some 1994-1996 listings are marked custom fitment only, so read the product notes or ask us before you order.
Mechman high output alternators for the Roadmaster come in 170, 240, 250, 320, 370 and 400 Amp.
Billet housings are machined from solid aluminum, and finishes here include Polished, Chrome, Dark Blue and Red. A standard cast housing suits an original-looking car. On a car this age, fresh plugs and pigtails from our alternator harnesses and regulators are a smart addition, and a Big 3 kit from our amp wiring kits lets the Roadmaster high output alternator deliver current where it is needed. The GMC S-15 page shares several of these units, and the full GM alternator collection has more.
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