How to replace the air hose inlet duct on 2009 Cadillac STS?

The first step for replacing the air cleaner inlet duct is to turn off the ignition and take off any front compartment sight shields you need to access the area. After that, take off the pcv hose from the air cleaner duct resonator and loosen the clamps on the duct. Once you have the air cleaner duct in place, reattach the pcv hose to the intake duct resonator and tighten the clamps on the duct to 4 nm. Lastly, refit the sight shields for the front compartment as required.

OEM 2009 Cadillac STS Air Hose

Air Inlet Duct

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2009 Cadillac STS Outlet Duct
Part Number: 21999771
Product Specifications
- Other Name: Duct, Air Cleaner And Silencer
- Item Weight: 1.40 Pounds
- Item Dimensions: 11.2 x 9.6 x 5.4 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 21999771
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2009 Cadillac STS Submodels:
- V | 8 Cyl 4.4 L GAS
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2009 Cadillac STS Intake Duct
Part Number: 15833712
Product Specifications
- Other Name: Duct, Air Cleaner Intake; Outlet Duct; Duct, Air Cleaner And Silencer
- Position: Rear
- Item Weight: 2.40 Pounds
- Item Dimensions: 20.6 x 12.1 x 12.6 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 15833712
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2009 Cadillac STS Submodels:
- Base, Platinum | 8 Cyl 4.6 L GAS
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2009 Cadillac STS PCV Valve
Part Number: 12614861
Product Specifications
- Other Name: Tube Assembly-PCV; Tube, Engine Crankcase Ventilation
- Replaces: 12604755
- Item Weight: 0.40 Pounds
- Item Dimensions: 12.3 x 4.5 x 3.5 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12614861
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2009 Cadillac STS Submodels:
- Base, Platinum | 8 Cyl 4.6 L GAS
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2009 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
- Item Weight: 1.20 Pounds
- Item Dimensions: 8.8 x 8.9 x 20.3 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 15812947
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2009 Cadillac STS Submodels:
- Base, Platinum | 6 Cyl 3.6 L GAS

2009 Cadillac STS Air Hose

With a comprehensive array of OEM 2009 Cadillac STS Air Hose, from fuel pumps to door handles, our website is a one-stop-shop for your needs. All our genuine 2009 Cadillac STS Air Hose are backed by the manufacturer's warranty and are offered at competitive prices in the market. Rest assured, you can shop with complete confidence.

2009 Cadillac STS Air Hose Parts Questions & Experts Answers

Q: How to replace the air hose inlet duct on 2009 Cadillac STS?
A: The first step for replacing the air cleaner inlet duct is to turn off the ignition and take off any front compartment sight shields you need to access the area. After that, take off the pcv hose from the air cleaner duct resonator and loosen the clamps on the duct. Once you have the air cleaner duct in place, reattach the pcv hose to the intake duct resonator and tighten the clamps on the duct to 4 nm. Lastly, refit the sight shields for the front compartment as required.