This coupling mounts between the throttle body and the upper intake (plenum) manifold and is a common failure point. If this part tears, it will develop and intake leak. Some symptoms of an intake leak is rough / poor idle, stumbling, and error codes such as P0171, and P0174.


  • High quality rubber / plastic construction
  • Direct replacement
  • Replaces dealer part numbers: 12555840
  • Built to strict quality control standards

This coupler makes a great replacement and offers good cost savings over a dealer unit!

Lifetime Warranty

This item is backed by a Limited Lifetime Warranty. In the event this item should fail due to manufacturing defects during intended use, we will exchange the part free of charge (excludes shipping charges) for the original purchaser.

4.0 / 5.0
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This repair fixed the problem by replacing the intake boot but the individual intake runner gaskets were not an exact fit. Had to use an adhesive to hold them in place. Seems to be okay and do not have any intake leak so far.
November 27, 2017
8 months ago
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Vehicle Fit

  • 2000-2005 Cadillac Deville Intake Plenum Coupling V8 4.6L Dorman 911-010
  • 2000 Cadillac Eldorado Intake Plenum Coupling V8 4.6L Dorman 911-010
  • 2000-2004 Cadillac Seville Intake Plenum Coupling V8 4.6L Dorman 911-010
  • 2001-2003 Olds Aurora Intake Plenum Coupling V8 4.0L Dorman 911-010
  • 2004-2005 Pontiac Bonneville Intake Plenum Coupling V8 4.6L Dorman 911-010

This part replaces:

  • OE # 12555840
  • Dorman 911-010
Only 3 left in stock
Part #: 1AEMX00079

Brand #: 911-010