How to replace the air hose inlet duct on 2008 Cadillac STS?

Starting with ignition off the technician needs to remove front compartment sight shields when necessary. Start by removing the pcv hose from its junction with the air cleaner duct resonator then unfasten the air cleaner duct clamps before you take off the duct. During installation position the air cleaner intake duct before reconnecting the pcv hose to the intake duct resonator and use a torque wrench to secure the clamps at 4 n.m (35 lb in). Reinstall the sight shields of the front compartment as required.

OEM 2008 Cadillac STS Air Hose

Air Inlet Duct

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2008 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 2008 Cadillac STS Submodels:
- V | 8 Cyl 4.4 L GAS
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2008 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 2008 Cadillac STS Submodels:
- Base, Platinum | 8 Cyl 4.6 L GAS
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2008 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.
More Info
Fits the following 2008 Cadillac STS Submodels:
- Base, Platinum | 6 Cyl 3.6 L GAS
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2008 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 2008 Cadillac STS Submodels:
- Base, Platinum | 8 Cyl 4.6 L GAS

2008 Cadillac STS Air Hose

With a comprehensive array of OEM 2008 Cadillac STS Air Hose, from fuel pumps to door handles, our website is a one-stop-shop for your needs. All our genuine 2008 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.

2008 Cadillac STS Air Hose Parts Questions & Experts Answers

Q: How to replace the air hose inlet duct on 2008 Cadillac STS?
A: Starting with ignition off the technician needs to remove front compartment sight shields when necessary. Start by removing the pcv hose from its junction with the air cleaner duct resonator then unfasten the air cleaner duct clamps before you take off the duct. During installation position the air cleaner intake duct before reconnecting the pcv hose to the intake duct resonator and use a torque wrench to secure the clamps at 4 n.m (35 lb in). Reinstall the sight shields of the front compartment as required.