Brand new Bosch Fuel injector for most CIS engines built between 1977 to 1993. NOTE: Does not fit 1986 to 1991 420 and 560 V8 engines, or 1990 to 1993 300CE 300SL with 104 engine. Contrary to popular opinion these do not last forever! AND once they reach a certain age they can not just be simply cleaned to restore peak performance. If your engine idles rough, quits after startup, smokes, and/or delivers poor fuel economy, it may be time to replace the injectors. They need to be spraying a full and fine pattern (mist). Most of the injectors I test on engines with more than 120,000 miles have lousy spray patterns. Take a look at the images below of injectors I recently tested from a 300E.


Now take a look at testing a brand new injector. Notice the difference!

Fits the following: