As many of you know, my engine seized due to broken oil pump gears. My warranty company refuses to pay for the work because my car has headers. When I quoted from the Magnuson-Moss Warranty Act, they didn't seem to care. This Act is a broad-ranging federal law that protects consumer rights on warranty issues. Numerous automative sities, including SEMA, appeal to this law as protection for consumers who install aftermarket parts on their cars. They argue that one the basis of this law warranty companies should not be able to void warranties simply due to the presence of aftermarket parts. This, of course, does not mean that warranty companies should be expected to pay for failed aftermarket parts or any failure due to aftermarket parts. When I searched the net, I only found places where the Magnuson-Moss Warranty Act have been successfully applied to computer printers. It seems that some printer companies were voiding their warranties if consumers did not use their particular brand of printer cartridges. The courts ruled that this was a violation of the Magnuson-Moss Warranty Act. Does anyone know of specific court cases where this Warranty Act has been successfully applied to aftermarket automotive parts? Any help would be greatly appreciated.