How to replace the left side exhaust manifold (LY7) on 2007 Cadillac STS?

Spare parts replacement of the left side Exhaust Manifold (LY7) starts with unfastening the Exhaust Manifold heat shield and oil level indicator while also removing the Catalytic Converter nuts and Exhaust Manifold bolts without reusing the gasket. You must throw away the old gasket from the Exhaust Manifold while conducting cleaning and inspection of the manifold before installing new parts. Examine the Catalytic Converter seal/heat shield sealing surface for damage before installation and get a new one if necessary. Mount a new Exhaust Manifold gasket onto the Exhaust Manifold before you attach the combination of the manifold with the gasket to both the Catalytic Converter and the Cylinder Head while maintaining the fastener notice as your guideline. When installing the Exhaust Manifold hardware you should torque its bolts to 20 n.m (15 lb ft) and its Catalytic Converter nuts to 50 n.m (37 lb ft). Finish the process by installing both the oil indicator along with the Exhaust Manifold heat shield.

OEM 2007 Cadillac STS Exhaust Manifold

Engine Exhaust Manifold

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6 Exhaust Manifolds found

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2007 Cadillac STS Exhaust Manifold, Driver Side
Part Number: 12638993
Product Specifications
- Other Name: Manifold, Catalytic Converter; Manifold, Engine Exhaust Manifold
- Position: Driver Side
- Replaces: 12606643
- Item Weight: 20.60 Pounds
- Item Dimensions: 32.3 x 10.5 x 5.2 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12638993
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2007 Cadillac STS Submodels:
- V | 8 Cyl 4.4 L GAS
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2007 Cadillac STS Exhaust Manifold, Driver Side
Part Number: 12571102
Product Specifications
- Other Name: Manifold, Engine Exhaust Manifold; Manifold
- Position: Driver Side
- Item Weight: 8.00 Pounds
- Item Dimensions: 15.3 x 7.3 x 7.5 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12571102
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2007 Cadillac STS Submodels:
- Base, Platinum | 6 Cyl 3.6 L GAS
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2007 Cadillac STS Exhaust Manifold, Passenger Side
Part Number: 12638994
Product Specifications
- Other Name: Manifold, Catalytic Converter; Manifold, Engine Exhaust Manifold
- Position: Passenger Side
- Replaces: 12606642
- Item Weight: 21.60 Pounds
- Item Dimensions: 33.8 x 10.2 x 5.1 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12638994
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2007 Cadillac STS Submodels:
- V | 8 Cyl 4.4 L GAS
View related parts
2007 Cadillac STS Exhaust Manifold, Driver Side
Part Number: 12638999
Product Specifications
- Other Name: Manifold, Exhaust (W/3Way Catalytic Converter); Manifold; Manifold, Engine Exhaust Manifold; Manifold, Catalytic Converter
- Position: Driver Side
- Replaces: 12607451
- Item Weight: 20.20 Pounds
- Item Dimensions: 31.7 x 10.4 x 5.1 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12638999
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2007 Cadillac STS Submodels:
- Base, Platinum | 8 Cyl 4.6 L GAS
View related parts
2007 Cadillac STS Exhaust Manifold, Passenger Side
Part Number: 12638996
Product Specifications
- Other Name: Manifold, Exhaust (W/3Way Catalytic Converter); Manifold; Manifold, Engine Exhaust Manifold; Manifold, Catalytic Converter
- Position: Passenger Side
- Replaces: 12607450
- Item Weight: 20.40 Pounds
- Item Dimensions: 32.0 x 10.5 x 4.3 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12638996
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2007 Cadillac STS Submodels:
- Base, Platinum | 8 Cyl 4.6 L GAS
View related parts
2007 Cadillac STS Exhaust Manifold, Passenger Side
Part Number: 12571101
Product Specifications
- Other Name: Manifold, Engine Exhaust Manifold; Manifold
- Position: Passenger Side
- Item Weight: 7.40 Pounds
- Item Dimensions: 15.0 x 7.5 x 7.4 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12571101
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2007 Cadillac STS Submodels:
- Base, Platinum | 6 Cyl 3.6 L GAS

2007 Cadillac STS Exhaust Manifold

With a comprehensive array of OEM 2007 Cadillac STS Exhaust Manifold, from fuel pumps to door handles, our website is a one-stop-shop for your needs. All our genuine 2007 Cadillac STS Exhaust Manifold are backed by the manufacturer's warranty and are offered at competitive prices in the market. Rest assured, you can shop with complete confidence.

2007 Cadillac STS Exhaust Manifold Parts Questions & Experts Answers

Q: How to replace the left side exhaust manifold (LY7) on 2007 Cadillac STS?
A: Spare parts replacement of the left side Exhaust Manifold (LY7) starts with unfastening the Exhaust Manifold heat shield and oil level indicator while also removing the Catalytic Converter nuts and Exhaust Manifold bolts without reusing the gasket. You must throw away the old gasket from the Exhaust Manifold while conducting cleaning and inspection of the manifold before installing new parts. Examine the Catalytic Converter seal/heat shield sealing surface for damage before installation and get a new one if necessary. Mount a new Exhaust Manifold gasket onto the Exhaust Manifold before you attach the combination of the manifold with the gasket to both the Catalytic Converter and the Cylinder Head while maintaining the fastener notice as your guideline. When installing the Exhaust Manifold hardware you should torque its bolts to 20 n.m (15 lb ft) and its Catalytic Converter nuts to 50 n.m (37 lb ft). Finish the process by installing both the oil indicator along with the Exhaust Manifold heat shield.