When your tractor starts knocking on a cold morning or loses power under load, worn connecting rod bearings are often the culprit. These big end bearings take tremendous abuse as they connect your pistons to the crankshaft, handling all the power strokes and compression forces that keep your engine running. If you're hearing that telltale metallic knock from deep in the engine block, it's time to replace these critical bearings before costly damage spreads to your crankshaft. What You're Getting Precision-manufactured bearing shells designed to handle diesel engine loads and pressures Direct replacement for original equipment - fits like the factory bearing that came in your tractor Quality materials that resist wear from constant reciprocating motion and high combustion temperatures Proper oil clearances to maintain lubrication film under demanding agricultural conditions Built for Real Farm Work These bearings fit older Case IH models that have earned their keep on farms for decades. Whether your 238 is still pulling a disc through spring fields, your 444 is running a bailer all summer, or your 434 is handling loader chores around the barn, these tractors were built when engines were simpler but just as hardworking. The connecting rod bearings transfer every bit of power from combustion to the crankshaft, making them essential for reliable operation. Made to Last Big end bearings live in one of the harshest environments inside your engine - they're constantly squeezed between the connecting rod and crankshaft while engine oil is their only protection. These replacement bearings are manufactured to handle the heat, pressure, and reciprocating loads that come with agricultural diesel operation. Quality bearing materials and precise manufacturing ensure they'll provide years of reliable service. Installation Notes Replacing connecting rod bearings requires complete engine disassembly and should be done during a full rebuild along with main bearings, rings, and gaskets. This isn't a field repair - you'll need proper measuring tools to check crankshaft journals and connecting rod clearances. Pro tip: always replace bearings in complete sets and never reuse connecting rod bolts, as they stretch during service and won't provide proper clamping force if reused.