How to replace the left exhaust manifold on 2004 Cadillac Seville?

In order to fit in the left exhaust manifold, loosen the nuts that held the secondary AIR tube, loosen the tube itself with the gasket and remove the front engine mount bracket. Take out the left exhaust manifold and gasket, not to be re-used. Wipe down and clean up the manifold and replace the gasket and seals. Install parts and screws as required.

OEM 2004 Cadillac Seville Exhaust Manifold

Engine Exhaust Manifold

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3 Exhaust Manifolds found

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2004 Cadillac Seville Exhaust Manifold, Passenger Side Part Number: 12558512
Product Specifications
- Other Name: Manifold, Engine Exhaust Manifold; Manifold
- Position: Passenger Side
- Item Weight: 9.00 Pounds
- Item Dimensions: 14.9 x 8.3 x 3.8 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12558512
- Warranty: This genuine part is guaranteed by GM's factory warranty.
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Fits the following 2004 Cadillac Seville Submodels:
- SLS, STS | 8 Cyl 4.6 L GAS
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2004 Cadillac Seville Exhaust Manifold, Passenger Side Part Number: 12557767
Product Specifications
- Other Name: Manifold, Engine Exhaust Manifold; Manifold
- Position: Passenger Side
- Item Weight: 9.00 Pounds
- Item Dimensions: 15.8 x 8.5 x 6.7 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12557767
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2004 Cadillac Seville Submodels:
- SLS, STS | 8 Cyl 4.6 L GAS
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2004 Cadillac Seville Exhaust Manifold, Driver Side Part Number: 12578360
Product Specifications
- Other Name: Manifold Assembly-Exhaust-Left-Hand; Manifold; Manifold, Engine Exhaust Manifold
- Position: Driver Side
- Item Weight: 9.10 Pounds
- Item Dimensions: 15.3 x 12.5 x 4.1 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12578360
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2004 Cadillac Seville Submodels:
- SLS | 8 Cyl 4.6 L GAS

2004 Cadillac Seville Exhaust Manifold

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2004 Cadillac Seville Exhaust Manifold Parts and Q&A

Q: How to replace the left exhaust manifold on 2004 Cadillac Seville?
A: In order to fit in the left exhaust manifold, loosen the nuts that held the secondary AIR tube, loosen the tube itself with the gasket and remove the front engine mount bracket. Take out the left exhaust manifold and gasket, not to be re-used. Wipe down and clean up the manifold and replace the gasket and seals. Install parts and screws as required.