Elevate the performance of your BMW E30 325e or E28 525e with this premium Mahle piston and ring set. Designed to precise standards, the set includes pistons with an 84mm diameter, ensuring a perfect fit for your engine. The piston rings are engineered for durability and optimal sealing, enhancing fuel efficiency and power delivery. Each component is meticulously crafted to meet the original equipment manufacturer's (OEM) specifications, denoted by the reference OE/OEM numbers including 11 25 1 278 767, 11 25 1 278 792, 11 25 1 287 039, and 11 25 1 287 096. Trust in the quality and reliability of Mahle to maintain the integrity of your engine.