PRODUCT HIGHLIGHTSHigh-Quality Aluminum Alloy Piston Set perfectly matched for 4D56 four-cylinder naturally aspirated diesel engine with 91.1mm piston diameter of 91.1mm. Compatible with full OEM codes MD304834, MD304835, MD304836, MD367334, MD367335, MD367336 for direct aftermarket replacement service. Produced under ISO 9001:2015 quality certification to guarantee precise dimensional tolerance, no secondary machining needed during engine overhaul assembly. Durable aluminum