To avoid starting another alternator thread, I posted the details of my 150 Amp upgrade on GSXR's thread in the "Car Audio and Multimedia" section of this forum at this link. The thread is entitled "Installed a 143A alternator in my W124" and my contribution is post #70.

Bottom line: easy install, great performance, cost under $100. YMMV.

Jeremy

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"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970