Toyota 2003 MR2 Spyder Owner's Manual page 193

Operation and Maintenance
REPLACEMENT PARTS
Warranty coverage is not dependent upon the use of any particular
brand of replacement parts. However, Toyota recommends using only
Genuine Toyota Parts when you need to replace a part on your vehicle.
Like all Toyota products, Genuine Toyota Parts are built to the highest
standards of quality, durability and performance. They are also designed
to fit your vehicle's exact specifications.
Your Toyota dealership maintains an extensive inventory of Genuine
Toyota Parts to meet your vehicle service needs. And because it is linked
electronically to Toyota's Parts Distribution Centers, the dealership has
quick access to any parts it may not have in stock.
Genuine Toyota Parts are covered by their own warranty (see your dealer
for details) or the remainder of any applicable New Vehicle Limited
Warranty, whichever is longer. Non–Genuine Toyota Parts, or any
damage or failures resulting from their use, are not covered by
any Toyota warranty.
28 Your Responsibilities