Maxiforce currently has two active pages for the John Deere 6125 engine kits, as outlined below:
There are 3 variations of piston/cylinder kits for this engine and Maxiforce currently offers the following 2 of 3:
-
Standard HP (Check Serial and/or Piston number to identify correctly)
- Piston # RE505901, RE518748, RE524324
- Cylinder Kit # TRE519111
- Engine Kit # TRE527659, TRE535191, TRE535191A
- In stock and Ready for Purchase
-
High HP (Check Serial and/or Piston number to identify correctly)
- Piston # RE515356, RE517209, RE524325
- Cylinder Kit # TRE515942
- Engine Kit # TRE535192, TRE535192A
- In stock and Ready for Purchase
Additionally, for the kits we currently offer, there are multiple variations of connecting rods, each requiring specific rod bearings and rod bolts. These variations are denoted on the catalog pages, as follows:
-
Early Engines (ESN up to 10,513):
- Machined split rods
- Required rod bearing: TRE534626
- Required rod bolt: TR66453
- Common rod casting number: R121174
-
Engines from ESN 10,514 and up (Fractured Split Rods):
- ESN 10,514 – 57,910:
- Rod bearing: TRE63811
- Rod bolt: TR501380
- Common rod casting numbers: R501566, R519164
- ESN 57,911 and up:
- Rod bearing: TRE562584
- Rod bolt: TR501380
- Common rod casting numbers: R526175, R526773
It’s important to note the differences in rod bearings, particularly with regard to the location of the locating tang. The later serial 6125 models use the same rod bearing as the 6135 (Also available from Maxiforce), which includes an oil hole in the upper shell. While the 6125 rods don’t utilize this oil hole, certain 6135 rods do.
Cataloging and Part Matching:
When searching for an engine by model code (e.g., 6125HZ008), the correct catalog page is displayed, but verifying the ESN or rod number is necessary to ensure the accurate rod bearings are selected. If you have both the piston number and rod casting number available, that information should be prioritized, as it provides the most accurate match.
