Upgrade or replace with confidence using this Aftermarket connecting rod bolt. Compatible with models including 4020, 4040, 4050, 4055, 4230, 4240, 4250, 4255, 4430, 4440, 4450, 4455, 4520, 4620, 4640, 4650, 4755, 4840, 4850, 4955, 8430, 8440, 8450. Interchangeable with OEM John Deere part number(s): R53290, R66452. Designed to fit John Deere equipment and built for long-lasting performance.