{"product_id":"acl-mazda-b6-bp-bp-t-1-6-1-8l-25mm-oversized-high-performance-main-bearing-set-5m8353h-25","title":"ACL Mazda B6\/BP\/BP-T 1.6\/1.8L .25mm Oversized High Performance Main Bearing Set | 5M8353H-.25","description":"\u003cp\u003eThis ACL High Performance main bearing set is machined 0.25mm oversize, for a Mazda B6\/BP\/BP-T (1.6L\/1.8L) crankshaft main journal that has been reground 0.25mm over standard. Per ACL's own fitment data it's used in the Mazda Miata, 323, MX-3, and Protege, the Mercury Capri, and the Kia Rio and Sephia. Main bearings support the crankshaft in the engine block and are matched with rod bearings to control bottom-end clearances.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eType: Main Bearing Set\u003c\/li\u003e\n\u003cli\u003eSeries: High Performance\u003c\/li\u003e\n\u003cli\u003eSize: 0.25mm Oversize\u003c\/li\u003e\n\u003cli\u003eEngine Fitment: Mazda B6\/BP\/BP-T 1.6L\/1.8L\u003c\/li\u003e\n\u003cli\u003ePart Number: 5M8353H-.25\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch5\u003eWhat does \"0.25mm Oversized\" mean?\u003c\/h5\u003e\u003cp\u003eIt means the bearing is machined 0.25mm over standard thickness, for use with a crankshaft main journal that has been reground 0.25mm undersize.\u003c\/p\u003e\u003ch5\u003eWhat vehicles does this main bearing set fit?\u003c\/h5\u003e\u003cp\u003eIt's sized for the Mazda B6\/BP\/BP-T 1.6L\/1.8L engine, used in the Mazda Miata, 323, MX-3, and Protege, the Mercury Capri, and the Kia Rio and Sephia.\u003c\/p\u003e\u003ch5\u003eDo I need rod bearings too?\u003c\/h5\u003e\u003cp\u003eYes, this listing is for main bearings only. Rod bearings for the B6\/BP\/BP-T are sold separately.\u003c\/p\u003e\u003ch5\u003eHow do I know if I need the 0.25mm oversize instead of Standard?\u003c\/h5\u003e\u003cp\u003eYour engine builder or machine shop will specify the size based on how much material was removed when the crankshaft was reground. Standard size is for a stock, unmachined crank.\u003c\/p\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What does \\\"0.25mm Oversized\\\" mean?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"It means the bearing is machined 0.25mm over standard thickness, for use with a crankshaft main journal that has been reground 0.25mm undersize.\"}},{\"@type\":\"Question\",\"name\":\"What vehicles does this main bearing set fit?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"It's sized for the Mazda B6\/BP\/BP-T 1.6L\/1.8L engine, used in the Mazda Miata, 323, MX-3, and Protege, the Mercury Capri, and the Kia Rio and Sephia.\"}},{\"@type\":\"Question\",\"name\":\"Do I need rod bearings too?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes, this listing is for main bearings only. Rod bearings for the B6\/BP\/BP-T are sold separately.\"}},{\"@type\":\"Question\",\"name\":\"How do I know if I need the 0.25mm oversize instead of Standard?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Your engine builder or machine shop will specify the size based on how much material was removed when the crankshaft was reground. Standard size is for a stock, unmachined crank.\"}}]}\u003c\/script\u003e","brand":"ACL","offers":[{"title":"Default Title","offer_id":41269903753264,"sku":"ACL5M8353H-.25","price":119.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/40122eef7c72ad8aedbf813a6911e74f_13f47dc6-209d-49c3-8c13-1de7ca907b6c.png?v=1712293756","url":"https:\/\/berryperformancesales.com\/products\/acl-mazda-b6-bp-bp-t-1-6-1-8l-25mm-oversized-high-performance-main-bearing-set-5m8353h-25","provider":"Berry Performance Sales","version":"1.0","type":"link"}