All six-cylinder equipped 107s were fitted with the DOHC M110 engine.
The M110.98x and .99x engines are fuel-injected engines, with Bosch D-Jetronic up to the .983 and K-Jetronic from the .984.
M110.982 / M110.992
The .992 is the low-compression version of the .982.
Power output of .982: 185 hp (136 kW) at 6000rpm.
Power output of .992: 170 hp (125 kW) at 6000rpm.
Applications:
1973-1976 280SL
1973-1976 280SLC
Hope that helps