The Monosem 30153053 left block spring is an original equipment manufacturer (OEM) part designed for Monosem agricultural planters. This crucial component helps maintain the correct tension and position of the planting unit's block, contributing to consistent seed depth and spacing. Manufactured to Monosem's specifications, it ensures durability and reliable performance in demanding field conditions. Essential for maintenance and repair, this spring helps restore optimal functionality to your Monosem planter.