Genuine Toyota Avalon Exhaust Manifold

Toyota Avalon Exhaust Manifold Parts Questions & Answers

• Left Exhaust Manifold Sub-Assembly
  17150-20010
  Q: How to remove and install an exhaust manifold on V4 engine for 1997 through 2001 Toyota Solara and 1997 through 2001 Toyota Avalon?

  A: Disconnect the negative cable from the battery. Unplug the oxygen sensor wire harness and the clamp over the harness. If you're installing a new exhaust manifold, remove the sensor. Remove the upper heat insulator from the manifold by removing the exhaust manifold heat insulator bolts. Apply penetrating oil to the exhaust manifold mounting nuts/bolts. Disconnect the exhaust pipe from the exhaust manifold. Remove the exhaust manifold brace (some models have two braces) and lower heat insulator by unbolting the exhaust manifold flange brace near the front engine mount. Remove the nuts/bolts and detach the manifold and gasket by removing the exhaust manifold fasteners at the cylinder head. Use a scraper to remove all traces of old gasket material and carbon deposits from the manifold and cylinder head mating surfaces. If the gasket was leaking, have the manifold checked for warpage at an automotive machine shop and resurfaced if necessary. Position a new gasket over the cylinder head studs. The marks on the gasket should face out (away from the head) and the arrow should point toward the rear (transaxle end) of the engine. Install the manifold and thread the mounting nuts/bolts into place. Working from the center out, tighten the nuts/bolts. Reinstall the remaining parts in the reverse order of removal. Run the engine and check for exhaust leaks.
• Right Exhaust Manifold Sub-Assembly
  17140-0P041
  Q: How to remove and install an exhaust manifold on V6 engine for Toyota Camry and 2007 through 2015 Toyota Avalon?

  A: Disconnect the electrical connectors from the left upstream oxygen sensor. Remove the bolts that secure the exhaust manifold support bracket and remove it. Disconnect any interfering wire clamps. Remove the heat shield from the front exhaust manifold. Evenly loosen the nuts that secure each exhaust manifold and remove the exhaust manifold. Remove and discard the old exhaust manifold gasket. Installation is the reverse of removal. Be sure to use a new gasket and install it with the oval-shaped protruding tip facing in the correct direction. For the left (driver's side) manifold, the tip must face to the rear; on the right manifold, it must face to the front. Tighten the exhaust manifold nuts a little at a time, working from the center nuts outward, to the torque.
• Right Exhaust Manifold Sub-Assembly
  17140-0P040
  Q: How to remove and reinstall exhaust manifolds on V6 engine for 2002 through 2008 Toyota Solara and 2002 through 2006 Toyota Avalon?

  A: Disconnect the negative cable from the battery. Spray penetrating oil on the exhaust manifold fasteners and allow it to soak in. Remove the heated oxygen sensors from the front and rear manifolds. Remove the EGR pipe from the rear exhaust manifold and Cylinder Head. Remove the nuts retaining the exhaust pipes to the front and rear exhaust manifolds. On the front manifold, remove the two bolts securing the manifold support bracket. Disconnect the electrical connector from the oxygen sensor at each manifold. Remove the bolts and the heat shield over the exhaust manifolds. Unbolt the exhaust manifolds from the cylinder heads, working from the ends toward the middle, and slip them off the mounting studs. Carefully inspect the manifolds and fasteners for cracks and damage. Use a scraper to remove all traces of old gasket material and carbon deposits from the manifolds and cylinder head mating surfaces. If the gasket was leaking, check the manifolds for warpage on the cylinder head mounting surface by placing a straightedge over the surface and trying to insert a feeler gauge. If the clearance exceeds the limit, have the manifold resurfaced at an automotive machine shop. Position new gaskets over the cylinder head studs. Install the manifolds and thread the mounting nuts into place. Working from the center out, tighten the nuts. Reinstall the remaining parts in the reverse order of removal. Use new gaskets when connecting the exhaust pipes. Run the engine and check for exhaust leaks.
• Left Exhaust Manifold Sub-Assembly
  17150-20010
  Q: How to remove and reinstall exhaust manifolds on V6 engine for 1997 through 2001 Toyota Solara and 1997 through 2001 Toyota Avalon?

  A: Disconnect the negative cable from the battery. Spray penetrating oil on the exhaust manifold fasteners and allow it to soak in. Remove the heated oxygen sensors from the front and rear manifolds. Remove the EGR pipe from the rear exhaust manifold and Cylinder Head. Remove the nuts retaining the exhaust pipes to the front and rear exhaust manifolds. Disconnect the electrical connector from the oxygen sensor at each manifold. Unbolt the exhaust manifolds from the cylinder heads and slip them off the mounting studs. Carefully inspect the manifolds and fasteners for cracks and damage. Use a scraper to remove all traces of old gasket material and carbon deposits from the manifolds and cylinder head mating surfaces. If the gasket was leaking, check the manifolds for warpage on the cylinder head mounting surface by placing a straightedge over the surface and trying to insert a feeler gauge. If the clearance exceeds the limit, have the manifold resurfaced at an automotive machine shop. Position new gaskets over the cylinder head studs. Install the manifolds and thread the mounting nuts into place. Working from the center out, tighten the nuts. Reinstall the remaining parts in the reverse order of removal. Use new gaskets when connecting the exhaust pipes. Run the engine and check for exhaust leaks.
• Left Exhaust Manifold Sub-Assembly
  17150-0P040
  Q: How to remove and install an exhaust manifold on V4 engine for 2002 through 2008 Toyota Solara and 2002 through 2006 Toyota Avalon?

  A: Disconnect the negative battery cable and raise the vehicle on jackstands. Remove the lower splash shields and apply penetrating oil to the exhaust pipe bolts. Remove these bolts and separate the exhaust pipe from the manifold, taking care not to damage the oxygen sensor. Remove the lower exhaust manifold braces and oxygen sensor connectors. In the engine compartment, remove the upper heat shield and detach the manifold and gasket. Scrape off old gasket material from the manifold and cylinder head. If the gasket leaks, replace the warped manifold. Position a new gasket over the cylinder head studs, noting any directional marks. Install the manifold and tighten the nuts/bolts from the center out. Reinstall the remaining parts in reverse order and check for exhaust leaks after running the engine.
• Right Exhaust Manifold Sub-Assembly
  17140-0P041
  Q: How to remove and install an exhaust manifold on V4 engine for Toyota Camry and 2007 through 2015 Toyota Avalon?

  A: Disconnect the cable from the negative battery terminal. Raise the front of the vehicle and support it securely on jackstands. Working below the vehicle, remove the lower splash shields. Apply penetrating oil to the bolts holding the exhaust pipe to the manifold. After the bolts have soaked, remove the bolts retaining the exhaust pipe to the manifold. Separate the front exhaust pipe from the manifold. Unbolt the lower exhaust manifold braces and remove them from the engine. Also, disconnect the oxygen sensor connectors. Working in the engine compartment, remove the upper heat shield from the manifold. Remove the nuts and bolts and detach the manifold and gasket. Use a scraper to remove all traces of old gasket material and carbon deposits from the manifold and cylinder head mating surfaces. If the gasket shows signs of leaking, check the manifold for warpage with a straight edge. If the manifold is warped, it must be replaced. Position a new gasket over the cylinder head studs, noting any directional marks or arrows on the gasket that may be present. Install the manifold and thread the mounting nuts into place. Working from the center out, tighten the nuts or bolts to the torque in three or four equal steps. Reinstall the remaining parts in reverse order of removal. Run the engine and check for exhaust leaks.