John Deere diesels work in tractors, combines and harvesting equipment that may run for thousands of hours before a rebuild, so rods in this category are usually ordered against a number taken from the failed component or from the machine's parts book. The range here covers the 2.9 litre three-cylinder 3029D and 3029T PowerTech units, the 4.5 litre 4045 PowerTech four, and the 6068 engines used in the 6110 through 6230 tractor series.
Numbers listed on the product pages include RE501057, R501057, MIA880469 and AM882321 for the 3029 family, R116414 with R116415 and RE501057 for the 4045 4.5 litre, and RE500608 for the 6068 and 6110 to 6230 applications. Fits cover 4000 and 5000 series tractors, compact tractors, and combines such as the 9400, 9410, 9450 and 9550. Cross-checking the number on the old rod against these references is the fastest way to confirm.
Each rod is forged from alloy steel and precision machined, with dimensional checks carried out batch by batch so that bore sizes and centre-to-centre length remain consistent across repeat orders. Supply is factory direct for the replacement market, and stock models have no hard minimum order, so one rod or a trial set is fine. If you are servicing a machine without a clear parts book, send the engine number or the OEM number from the old rod and we will confirm the match before you order.