Introduction
Replacement
Repairing the Existing Alternator

Introduction
The alternator on the Mk III Range Rover (L322/LM)  is an expensive water-cooled affair, with the high output required to power the myriad electrical systems in the vehicle. Even removing it from the vehicle is a daunting task.

This page, a work in progress, is designed to lay out the various options for the owner with varying degrees of do-it-yourself expertise.

Replacement

The genuine 150 amp alternator (YLE000040) used on the 2003-2005 models is a Bosch unit that seems to be shared with the BMW X5 (2000-2004) and various other BMW models. It is is quite expensive, usually around $600 or so, but with the labor required to remove and replace the old unit you are likely to be faced with a $1200 bill from the dealer. However a rebuilt alternator can be had from suppliers such as The Rover Connection for about $400.

For more details on alternative parts sources, see the electrical section of the Mk III Range Rover 4.4 parts sources page.

Repair
Owner Brent Sanders reports (2009) that the alternator recently quit on his 2003 Range Rover. He was able (with some trouble) to remove it and have the three positive rectification diodes repaired by a local Mom and Pop alternator/starter rebuild shop for $150. The Bosch distributor in his area had no replacement parts in stock, but the rebuild shop was able to use locally sourced diodes for replacements. With only 60,000 miles on the RR, the shop reported that thte rest of the alternator checked out perfectly and had minimal wear on the moving parts.

The rebuild shop Brent used was:
A&M Alternator Service, 2419 E Jackson St, Phoenix, AZ . Ask for Manuel 1st (father) or Manuel 3rd (son).