Mondial 3.2 fuel injector

Because some late (non-US) 3.2 are KE3-Jet and have slightly different (higher) operating pressures than K-Jet or KE-Jet. Consequently, the opening/closing pressure spec of the 0437502010 injector is 3.7 to 4.8 bar; whereas, the opening/closing pressure spec of the 0437502047 injector opening/closing pressure is 3.0 to 4.1 bar. I believe the main reasons you should not use 0437502047 on a KE3-Jet system is that KE3-Jet will have a higher Accumulator (residual) pressure of something like 3.7 bar so you risk liquid fuel coming out of the injectors after shutoff, and the injectors are tested/designed for their spray pattern at their different system pressures (KE3-Jet operates at 6.1-6.5 bar while K-Jet/KE-Jet are more like 5.0-5.5 bar). Many MB models also use the KE3-Jet system so they shouldn't be unobtanium -- are you having difficulty getting 0437502010?

 

I should've check my notes first before typing . 0437502010 (steel) and 0437502047 (brass) are equivalent injectors for K-Jet and KE-Jet so either is OK on those systems.

Some late (non-US) 3.2 are KE3-Jet, but they use yet a different Bosch CIS injector as described.

What Bosch CIS injection system do you have?

 

Yes, there is a cult that believes that the 010 steel body ones are somehow fundamentally "better" than the 047 brass body, but I don't share that opinion. I do think that the early production of the steel injectors in Germany (when CIS was the flagship injection system) probably did have a higher overall population quality than the brass ones now made in Mexico/Brazil?, but, IMO, a properly working brass 047 is no different than a properly working steel 010. Of course, there is a sub-cult of them that thinks "flow-matching" CIS injectors is important.