{"product_id":"acl-7m1539h-std-standard-size-main-bearing-set-for-bmw-m20-engines","title":"ACL 7M1539H-STD Standard Size Main Bearing Set for BMW M20 Engines","description":"ACL BMW M20B20\/M20B23\/M20B25\/M20B27 Standard Size Main Bearing Set\n\u003cp\u003e\u003cstrong\u003eBrief Description:\u003c\/strong\u003e The ACL 7M1539H-STD Standard Size Main Bearing Set is designed for BMW M20B20, M20B23, M20B25, and M20B27 engines. Manufactured for dependable crankshaft support, this automotive replacement bearing set helps maintain proper clearance and smooth engine operation during everyday driving and performance applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Product Specifications \u0026amp; Technical Data:\u003c\/strong\u003e\u003cbr\u003eBrand: ACL\u003cbr\u003ePart Number: 7M1539H-STD\u003cbr\u003eProduct Type: Main Bearing Set\u003cbr\u003eEngine Application: BMW M20B20, M20B23, M20B25, and M20B27\u003cbr\u003eBearing Size: Standard\u003cbr\u003eEngine Component: Crankshaft main bearings\u003cbr\u003eQuantity: One complete bearing set\u003cbr\u003eApplication Type: Automotive replacement component\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e This ACL main bearing set fits select BMW applications, including the 1986, 1987, and 1988 BMW 325; 1998, 1999, and 2000 BMW 323i; 1998 and 1999 BMW 323is; the 2000 BMW 323Ci; and the 2001 BMW 325Ci. Confirm the vehicle year, engine configuration, crankshaft condition, and required bearing clearance before installation. Standard-size bearings are intended for crankshafts that remain within the manufacturer’s standard journal specifications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e One ACL 7M1539H-STD standard-size main bearing set for compatible BMW M20 engines. Installation should be completed by a qualified technician using the vehicle manufacturer’s service procedures, torque specifications, and clearance requirements. Proper inspection and measurement of the crankshaft and engine block are recommended before assembly.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eStandard Size Fitment: Designed for crankshafts that meet standard journal specifications.\u003c\/li\u003e\n\u003cli\u003eBMW M20 Engine Compatibility: Engineered for select M20B20, M20B23, M20B25, and M20B27 applications.\u003c\/li\u003e\n\u003cli\u003eReliable Crankshaft Support: Helps maintain proper main bearing clearance and stable crankshaft operation.\u003c\/li\u003e\n\u003cli\u003eProfessional Replacement Design: Suitable for engine rebuilding, restoration, and dependable automotive service applications.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\nFitments:\u003cbr\u003e\n1982 BMW 528e Base\u003cbr\u003e\n1983 BMW 528e Base\u003cbr\u003e\n1984 BMW 325e Base\u003cbr\u003e\n1984 BMW 528e Base\u003cbr\u003e\n1985 BMW 325e Base\u003cbr\u003e\n1985 BMW 524td Base\u003cbr\u003e\n1985 BMW 528e Base\u003cbr\u003e\n1986 BMW 325 Base\u003cbr\u003e\n1986 BMW 325e Base\u003cbr\u003e\n1986 BMW 325es Base\u003cbr\u003e\n1986 BMW 524td Base\u003cbr\u003e\n1986 BMW 528e Base\u003cbr\u003e\n1987 BMW 325 Base\u003cbr\u003e\n1987 BMW 325e Base\u003cbr\u003e\n1987 BMW 325es Base\u003cbr\u003e\n1987 BMW 325i Base\u003cbr\u003e\n1987 BMW 325is Base\u003cbr\u003e\n1987 BMW 528e Base\u003cbr\u003e\n1988 BMW 325 Base\u003cbr\u003e\n1988 BMW 325i Base\u003cbr\u003e\n1988 BMW 325is Base\u003cbr\u003e\n1988 BMW 325iX Base\u003cbr\u003e\n1988 BMW 528e Base\u003cbr\u003e\n1989 BMW 325i Base\u003cbr\u003e\n1989 BMW 325is Base\u003cbr\u003e\n1989 BMW 325iX Base\u003cbr\u003e\n1989 BMW 525i Base\u003cbr\u003e\n1990 BMW 325i Base\u003cbr\u003e\n1990 BMW 325is Base\u003cbr\u003e\n1990 BMW 325iX Base\u003cbr\u003e\n1990 BMW 525i Base\u003cbr\u003e\n1991 BMW 325i Base\u003cbr\u003e\n1991 BMW 325is Base\u003cbr\u003e\n1991 BMW 325iX Base\u003cbr\u003e\n1991 BMW 525i Base\u003cbr\u003e\n1992 BMW 325i Base\u003cbr\u003e\n1992 BMW 325is Base\u003cbr\u003e\n1992 BMW 525i Base\u003cbr\u003e\n1993 BMW 325i Base\u003cbr\u003e\n1993 BMW 325is Base\u003cbr\u003e\n1993 BMW 525i Base\u003cbr\u003e\n1993 BMW 525iT Base\u003cbr\u003e\n1994 BMW 325i Base\u003cbr\u003e\n1994 BMW 325is Base\u003cbr\u003e\n1994 BMW 525i Base\u003cbr\u003e\n1995 BMW 325i Base\u003cbr\u003e\n1995 BMW 325is Base\u003cbr\u003e\n1995 BMW 525i Base\u003cbr\u003e\n1996 BMW 328i Base\u003cbr\u003e\n1996 BMW 328is Base\u003cbr\u003e\n1996 BMW M3 Base\u003cbr\u003e\n1997 BMW 328i Base\u003cbr\u003e\n1997 BMW 328is Base\u003cbr\u003e\n1997 BMW 528i Base\u003cbr\u003e\n1997 BMW M3 Base\u003cbr\u003e\n1997 BMW Z3 Roadster\u003cbr\u003e\n1998 BMW 323i Base\u003cbr\u003e\n1998 BMW 323is Base\u003cbr\u003e\n1998 BMW 328i Base\u003cbr\u003e\n1998 BMW 328is Base\u003cbr\u003e\n1998 BMW 528i Base\u003cbr\u003e\n1998 BMW M3 Base\u003cbr\u003e\n1998 BMW Z3 M Roadster\u003cbr\u003e\n1998 BMW Z3 Roadster\u003cbr\u003e\n1999 BMW 323i Base\u003cbr\u003e\n1999 BMW 323is Base\u003cbr\u003e\n1999 BMW 328i Base\u003cbr\u003e\n1999 BMW 328is Base\u003cbr\u003e\n1999 BMW 528i Base\u003cbr\u003e\n1999 BMW M3 Base\u003cbr\u003e\n1999 BMW Z3 Coupe\u003cbr\u003e\n1999 BMW Z3 M Coupe\u003cbr\u003e\n1999 BMW Z3 M Roadster\u003cbr\u003e\n1999 BMW Z3 Roadster\u003cbr\u003e\n2000 BMW 323Ci Base\u003cbr\u003e\n2000 BMW 323i Base\u003cbr\u003e\n2000 BMW 328Ci Base\u003cbr\u003e\n2000 BMW 328i Base\u003cbr\u003e\n2000 BMW 528i Base\u003cbr\u003e\n2000 BMW Z3 Coupe\u003cbr\u003e\n2000 BMW Z3 M Coupe\u003cbr\u003e\n2000 BMW Z3 M Roadster\u003cbr\u003e\n2000 BMW Z3 Roadster\u003cbr\u003e\n2001 BMW 325Ci Base\u003cbr\u003e\n2001 BMW 325i Base\u003cbr\u003e\n2001 BMW 325xi Base\u003cbr\u003e\n2001 BMW 330Ci Base\u003cbr\u003e\n2001 BMW 330i Base\u003cbr\u003e\n2001 BMW 330xi Base\u003cbr\u003e\n2001 BMW 525i Base\u003cbr\u003e\n2001 BMW 530i Base\u003cbr\u003e\n2001 BMW M3 Base\u003cbr\u003e\n2001 BMW X5 3.0i\u003cbr\u003e\n2001 BMW Z3 Coupe\u003cbr\u003e\n2001 BMW Z3 M Coupe\u003cbr\u003e\n2001 BMW Z3 M Roadster\u003cbr\u003e\n2001 BMW Z3 Roadster\u003cbr\u003e\n2002 BMW 325Ci Base\u003cbr\u003e\n2002 BMW 325i Base\u003cbr\u003e\n2002 BMW 325xi Base\u003cbr\u003e\n2002 BMW 330Ci Base\u003cbr\u003e\n2002 BMW 330i Base\u003cbr\u003e\n2002 BMW 330xi Base\u003cbr\u003e\n2002 BMW 525i Base\u003cbr\u003e\n2002 BMW 530i Base\u003cbr\u003e\n2002 BMW M3 Base\u003cbr\u003e\n2002 BMW X5 3.0i\u003cbr\u003e\n2002 BMW Z3 Coupe\u003cbr\u003e\n2002 BMW Z3 M Coupe\u003cbr\u003e\n2002 BMW Z3 M Roadster\u003cbr\u003e\n2002 BMW Z3 Roadster\u003cbr\u003e\n2003 BMW 325Ci Base\u003cbr\u003e\n2003 BMW 325i Base\u003cbr\u003e\n2003 BMW 325xi Base\u003cbr\u003e\n2003 BMW 330Ci Base\u003cbr\u003e\n2003 BMW 330i Base\u003cbr\u003e\n2003 BMW 330xi Base\u003cbr\u003e\n2003 BMW 525i Base\u003cbr\u003e\n2003 BMW 530i Base\u003cbr\u003e\n2003 BMW M3 Base\u003cbr\u003e\n2003 BMW X5 3.0i\u003cbr\u003e\n2003 BMW Z4 2.5i\u003cbr\u003e\n2003 BMW Z4 3.0i\u003cbr\u003e\n2004 BMW 325Ci Base\u003cbr\u003e\n2004 BMW 325i Base\u003cbr\u003e\n2004 BMW 325xi Base\u003cbr\u003e\n2004 BMW 330Ci Base\u003cbr\u003e\n2004 BMW 330i Base\u003cbr\u003e\n2004 BMW 330xi Base\u003cbr\u003e\n2004 BMW 525i Base\u003cbr\u003e\n2004 BMW 530i Base\u003cbr\u003e\n2004 BMW M3 Base\u003cbr\u003e\n2004 BMW X3 2.5i\u003cbr\u003e\n2004 BMW X3 3.0i\u003cbr\u003e\n2004 BMW X5 3.0i\u003cbr\u003e\n2004 BMW Z4 2.5i\u003cbr\u003e\n2004 BMW Z4 3.0i\u003cbr\u003e\n2005 BMW 325Ci Base\u003cbr\u003e\n2005 BMW 325i Base\u003cbr\u003e\n2005 BMW 325xi Base\u003cbr\u003e\n2005 BMW 330Ci Base\u003cbr\u003e\n2005 BMW 330i Base\u003cbr\u003e\n2005 BMW 330xi Base\u003cbr\u003e\n2005 BMW 525i Base\u003cbr\u003e\n2005 BMW 530i Base\u003cbr\u003e\n2005 BMW M3 Base\u003cbr\u003e\n2005 BMW X3 2.5i\u003cbr\u003e\n2005 BMW X3 3.0i\u003cbr\u003e\n2005 BMW X5 3.0i\u003cbr\u003e\n2005 BMW Z4 2.5i\u003cbr\u003e\n2005 BMW Z4 3.0i\u003cbr\u003e\n2006 BMW 325Ci Base\u003cbr\u003e\n2006 BMW 330Ci Base\u003cbr\u003e\n2006 BMW M3 Base\u003cbr\u003e\n2006 BMW X3 3.0i\u003cbr\u003e\n2006 BMW X5 3.0i\u003cbr\u003e\n2006 BMW Z4 M Coupe\u003cbr\u003e\n2006 BMW Z4 M Roadster\u003cbr\u003e\n2007 BMW Z4 M Coupe\u003cbr\u003e\n2007 BMW Z4 M Roadster\u003cbr\u003e\n2008 BMW Z4 M Coupe\u003cbr\u003e\n2008 BMW Z4 M Roadster\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }\u003c\/style\u003e\n\u003ctable class=\"productattributes\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003eAir Freight Prohibited: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eNot Carb Approved: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eCarb Acknowledgement Required: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eLtl Freight Required: 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