How to replace the air hose outlet duct on Cadillac STS?

Starting air cleaner outlet duct replacement requires removal of the fuel injector sight shield followed by disconnection of the positive crankcase ventilation (PCV) tube from the air cleaner duct. To extract the air cleaner duct from your vehicle start by freeing the clamp at the Throttle Body along with the clamp at the maf/ iat sensor. Install this new air cleaner duct by fastening the clamp at the Throttle Body and maf/iat sensor to 3 n.m (27 lb in) torque settings while following the fastener notice instructions in service precautions. Reinstall the fuel injector sight shield after you secure the duct. Resume the connection of the pcv tube.

OEM Cadillac STS Air Hose

Air Inlet Duct

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Cadillac STS Outlet Duct
Part Number: 21999771
Product Specifications
- Other Name: Duct, Air Cleaner And Silencer
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2009 Cadillac STS | V | 8 Cyl 4.4 L GAS
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Cadillac STS Intake Duct
Part Number: 15833712
Product Specifications
- Other Name: Duct, Air Cleaner Intake; Outlet Duct; Duct, Air Cleaner And Silencer
- Position: Rear
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007-2010 Cadillac STS | Base, Platinum | 8 Cyl 4.6 L GAS
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Cadillac STS Intake Duct
Part Number: 25744215
Product Specifications
- Other Name: Duct, Air Cleaner Intake; Inlet Duct
- Position: Rear
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2006 Cadillac STS | Base | 8 Cyl 4.6 L GAS
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Cadillac STS Intake Duct
Part Number: 25733251
Product Specifications
- Other Name: Duct, Air Cleaner Intake; Inlet Duct
- Position: Rear
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2008 Cadillac STS | Base, Platinum | 6 Cyl 3.6 L GAS
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Cadillac STS PCV Valve
Part Number: 12614861
Product Specifications
- Other Name: Tube Assembly-PCV; Tube, Engine Crankcase Ventilation
- Replaces: 12604755
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2010 Cadillac STS | Base, Platinum | 8 Cyl 4.6 L GAS
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Cadillac STS Intake Duct
Part Number: 15812947
$10.77 MSRP: $16.04
You Save: $5.27 (33%)
Product Specifications
- Other Name: Duct, Air Cleaner Intake; Inlet Duct; Duct, Air Cleaner And Silencer
- Position: Rear
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2009-2011 Cadillac STS | Base, Platinum | 6 Cyl 3.6 L GAS

Cadillac STS Air Hose

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Cadillac STS Air Hose Parts Questions & Experts Answers

Intake Duct
25733251
Q: How to replace the air hose outlet duct on Cadillac STS?
A: Starting air cleaner outlet duct replacement requires removal of the fuel injector sight shield followed by disconnection of the positive crankcase ventilation (PCV) tube from the air cleaner duct. To extract the air cleaner duct from your vehicle start by freeing the clamp at the Throttle Body along with the clamp at the maf/ iat sensor. Install this new air cleaner duct by fastening the clamp at the Throttle Body and maf/iat sensor to 3 n.m (27 lb in) torque settings while following the fastener notice instructions in service precautions. Reinstall the fuel injector sight shield after you secure the duct. Resume the connection of the pcv tube.