When servicing your John Deere 6125 engine, selecting the correct engine components is essential for reliable performance and long-term durability. Maxiforce offers premium kits and components specifically engineered for the 6125 PowerTech engine series, with two of the three known variations currently available and ready to ship.
Available John Deere 6125 Engine Kits from Maxiforce
There are three main piston and cylinder kit variations for the John Deere 6125 engine. Maxiforce currently supports two of the most commonly used configurations. To ensure accuracy, always confirm your piston number and engine serial number (ESN) before ordering.
Maxiforce currently has two active pages for the John Deere 6125 engine kits, as outlined below:
Standard Horsepower Kits
- Piston Numbers: RE505901, RE518748, RE524324
- Cylinder Kit: TRE519111
- Engine Kits: TRE527659, TRE535191, TRE535191A
- Status: In Stock and Ready for Purchase
High Horsepower Kits
- Piston Numbers: RE515356, RE517209, RE524325
- Cylinder Kit: TRE515942
- Engine Kits: TRE535192, TRE535192A
- Status: In Stock and Ready for Purchase
Each kit is designed to match specific horsepower ratings and engine builds. Using the wrong kit can lead to performance issues or fitment errors, so it’s essential to cross-reference serial and part numbers using Maxiforce’s catalog.
Connecting Rod Variations and Related Components
For the 6125 series, there are multiple connecting rod types, each with its own compatible rod bearings and bolts. These differences are typically determined by the ESN and rod casting number. Below is a guide to help you identify the correct combination:
Engines with ESN up to 10,513
- Rod Type: Machined Split Rods
- Rod Bearing: TRE534626
- Rod Bolt: TR66453
- Common Rod Casting Number: R121174
Engines with ESN 10,514 – 57,910
- Rod Type: Fractured Split Rods
- Rod Bearing: TRE63811
- Rod Bolt: TR501380
- Common Rod Casting Numbers: R501566, R519164
Engines with ESN 57,911 and Above
- Rod Bearing: TRE562584
- Rod Bolt: TR501380
- Common Rod Casting Numbers: R526175, R526773
It’s important to note that later serial 6125 models share a rod bearing with certain 6135 engines. This bearing includes an oil hole in the upper shell. While the 6125 does not require this oil hole, it is necessary for some 6135 applications.
How to Confirm the Right Parts
When using the Maxiforce catalog, a model code search (such as 6125HZ008) will point you to the appropriate page. However, for best results, always verify the piston number and rod casting number. These two details are the most reliable indicators when selecting the correct kit and associated parts.
Why Maxiforce is the Right Choice
Maxiforce offers precision-manufactured parts for John Deere engines that meet high standards for quality, reliability, and performance. With fast shipping, technical support, and a full inventory of compatible parts, Maxiforce makes it easy to get exactly what you need—quickly and with confidence.
- Comprehensive kit coverage for standard and high HP models
- Detailed catalog guidance for accurate part matching
- High-quality manufacturing standards
- Same-day shipping on stocked parts
Explore the full range of John Deere replacement parts on the Maxiforce website.
Have questions or need help confirming the correct kit for your engine? Contact our technical team—we’re here to help you keep your equipment running strong.
