How to replace the air hose outlet duct on 2006 Cadillac STS?

In order to change the duct that air cleaner outlet is replacing, take out the front engine compartment sight shield. Unplug the vacuum hose and loosen the clamps of the air ducts. Take away the old duct, get the new duct, and clamp it. Reattach the vacuum hose and re-attach the sight shield.

OEM 2006 Cadillac STS Air Hose

Air Inlet Duct

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2006 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.
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Fits the following 2006 Cadillac STS Submodels:
- V | 8 Cyl 4.4 L GAS
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2006 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.
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Fits the following 2006 Cadillac STS Submodels:
- Base, Platinum | 8 Cyl 4.6 L GAS
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2006 Cadillac STS Intake Duct Part Number: 25733251
Product Specifications
- Other Name: Duct, Air Cleaner Intake; Inlet Duct
- Position: Rear
- Item Weight: 1.40 Pounds
- Item Dimensions: 16.9 x 5.9 x 5.5 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 25733251
- Warranty: This genuine part is guaranteed by GM's factory warranty.
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Fits the following 2006 Cadillac STS Submodels:
- Base, Platinum | 6 Cyl 3.6 L GAS
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2006 Cadillac STS Intake Duct Part Number: 25744215
Product Specifications
- Other Name: Duct, Air Cleaner Intake; Inlet Duct
- Position: Rear
- Item Weight: 1.20 Pounds
- Item Dimensions: 9.8 x 5.6 x 16.5 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 25744215
- Warranty: This genuine part is guaranteed by GM's factory warranty.
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Fits the following 2006 Cadillac STS Submodels:
- Base | 8 Cyl 4.6 L GAS

2006 Cadillac STS Air Hose

With a comprehensive array of OEM 2006 Cadillac STS Air Hose, from fuel pumps to door handles, our website is a one-stop-shop for your needs. All our genuine 2006 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.

2006 Cadillac STS Air Hose Parts and Q&A

Q: How to replace the air hose outlet duct on 2006 Cadillac STS?
A: In order to change the duct that air cleaner outlet is replacing, take out the front engine compartment sight shield. Unplug the vacuum hose and loosen the clamps of the air ducts. Take away the old duct, get the new duct, and clamp it. Reattach the vacuum hose and re-attach the sight shield.