Dorman 03423 exhaust bolt hardware replaces missing, stripped, broken, or corroded factory manifold fasteners on specified BMW, Chevrolet, Geo, Lexus, Pontiac, Scion, Subaru, and Toyota applications. This standard-replacement set gives mechanics and DIY installers fresh M10x1.25 steel hardware with zinc plating, helping restore a secure exhaust manifold connection when the original bolts and nuts can no longer be reused.

Dorman 03423 Technical Specifications:

• Steel construction is built for standard-replacement exhaust manifold service where heat, age, and corrosion often make original fasteners difficult to reinstall.
• M10x1.25 metric thread sizing matches the specified factory-style applications covered by this part number.
• Each bolt measures 43.18 mm long and uses an integral washer with a 20.44 mm outside diameter for proper bearing area at the mounting point.
• Grade 10.9 bolts with zinc plating and a yellow color provide the documented hardware specification for this replacement set.
• Bolt-and-nut hardware is sold as a pair-based service solution for replacing failed or missing stock exhaust manifold mounting fasteners.

Includes:

• 2 exhaust manifold bolts
• 2 matching nuts

Use this hardware when servicing an exhaust manifold where the original bolts or nuts are fatigued, missing, stripped, or too corroded to clamp reliably. Clean the mating threads and compare removed hardware to the replacement pieces before final assembly.

Application coverage includes 1999-2000 BMW 323i, 1999 BMW 323is, 2000 BMW 323Ci, 1999-2000 BMW 328i, 1999 BMW 328is, 2000 BMW 328Ci, 1999-2000 BMW 528i, 1988 Chevrolet Nova, 1989-1997 Geo Prizm, 2002-2003 Lexus ES300, 2004-2006 Lexus ES330, 2009-2010 Pontiac Vibe, 2007-2010 Scion tC, 2004-2006 Subaru Baja, 2004-2013 Subaru Forester, 1994-1997 and 2002-2010 Subaru Impreza, 1991-1994 and 2005-2009 Subaru Legacy, 2005-2009 Subaru Outback, 2012-2016 Subaru WRX, 2013-2021 Subaru WRX STI, 1985-1995 Toyota 4Runner, 1992-1993 and 2000-2006 Toyota Camry, 1985 and 1990-1997 Toyota Celica, 1988-1997 and 2009-2013 Toyota Corolla, 2009-2013 Toyota Matrix, 1992-1995 Toyota Paseo, 1985-1995 Toyota Pickup, and 2000-2008 Toyota Solara. Confirm the exact vehicle and exhaust position before installation.