Introducing the Rotary 7157 3/8 x 4-1/4 Idler Pulley - an essential component for maintaining the performance of your equipment. This genuine Rotary part (part number 7157) is designed to withstand the rigors of heavy-duty use, ensuring smooth and efficient operation. With its durable construction and precise dimensions, this idler pulley provides reliable support for your engine without sacrificing performance. Say goodbye to costly breakdowns and keep your equipment running at its best with the Rotary 7157 Idler Pulley. Trust the brand that has been a leader in the industry for over 90 years - Rotary.