{"product_id":"acl-acura-d16a1-97-01-honda-h22a4-98-f23a-0-25mm-oversized-high-performance-main-bearing-set-5m1957h-25","title":"ACL Acura D16A1 \/ 97-01 Honda H22A4 \/ 98+ F23A 0.25mm Oversized High Performance Main Bearing Set | 5M1957H-.25","description":"\u003cp\u003eThis ACL High Performance main bearing set is machined 0.25mm oversize, for a crankshaft main journal reground 0.25mm over standard on the Acura D16A1, Honda H22A4 (97-01), and Honda F23A (98+) engine family. Per ACL's own fitment data this bearing size is shared across the Acura CL and Integra, Honda Accord, Civic, Civic del Sol, CRX, Odyssey, and Prelude, and the Isuzu Oasis. 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: Acura D16A1 \/ Honda H22A4 (97-01) \/ Honda F23A (98+)\u003c\/li\u003e\n\u003cli\u003ePart Number: 5M1957H-.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 engines does this main bearing set fit?\u003c\/h5\u003e\u003cp\u003eIt's sized for the Acura D16A1, Honda H22A4 (97-01), and Honda F23A (98+) engine family, as used across various Acura and Honda models including the Integra, CL, Accord, Civic, Prelude, and Odyssey, plus the Isuzu Oasis.\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 this engine family 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 engines does this main bearing set fit?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"It's sized for the Acura D16A1, Honda H22A4 (97-01), and Honda F23A (98+) engine family, as used across various Acura and Honda models including the Integra, CL, Accord, Civic, Prelude, and Odyssey, plus the Isuzu Oasis.\"}},{\"@type\":\"Question\",\"name\":\"Do I need rod bearings too?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes, this listing is for main bearings only. Rod bearings for this engine family 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":41269902147632,"sku":"ACL5M1957H-.25","price":121.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/40122eef7c72ad8aedbf813a6911e74f_39273279-355e-486a-b0f6-fc8ed1a6799a.png?v=1712293594","url":"https:\/\/berryperformancesales.com\/products\/acl-acura-d16a1-97-01-honda-h22a4-98-f23a-0-25mm-oversized-high-performance-main-bearing-set-5m1957h-25","provider":"Berry Performance Sales","version":"1.0","type":"link"}