DNJ EK478A Engine Rebuild Kit For 06-10 Mazda 3 5 2.3L L4 DOHC 16v. Manufactured to meet or exceed OEM Specifications. INTERCHANGES: SP25-173, CB-1838AL, RBMA25,4B1870A, BR25-189. Pistons and Piston Rings Set Size Options.040 = 1.00 mm. Main Bearings Set Size Options. Rod Bearings Set Size Options. Fitment Note: 1.2x1.2x2.5. IMPORTANT NOTE ABOUT THIS ITEM. Please let us know if you need Oversizes or Standard sizes at CHECKOUT or send us a MESSAGE immediately, we will check for availability and let you know if we have the size you need, otherwise we will send you Standard sizes. Please refer to the images for an accurate description of the parts included in this listing. Powered by Solid Commerce The All-in-One Listing, Inventory & Order Management Solution.