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

The replacement process of the left side Exhaust Manifold (LLT) starts with removing the Exhaust Manifold heat shield followed by the oil level indicator removal. Catalytic Converter nuts and Exhaust Manifold bolts need removal at this point while discarding the gasket will be necessary. After the steps remove the manifold exhaust followed by discarding the gasket. Through complete examination check the condition of the Exhaust Manifold. Before installing the system check if the Catalytic Converter seal or heat shield surfaces have wear or damage. Replace such components when necessary. Safely position the new Exhaust Manifold gasket onto the Exhaust Manifold before mounting the Exhaust Manifold with the gasket both on the Catalytic Converter and Cylinder Head. Fasten the Exhaust Manifold bolts using 20 nm (15 lb ft) torque then torque the Catalytic Converter nuts to 50 nm (37 lb ft). The last step involves reinstallation of the oil level indicator with the Exhaust Manifold heat shield.

How to replace the right side exhaust manifold (LP1, LY7, LLT) on Cadillac STS?

The first task for right side Exhaust Manifold (LP1, LY7, LLT) replacement requires heat shield removal. Begin by removing the nuts securing the Catalytic Converter and thereafter the bolts holding the Exhaust Manifold while discarding the gasket. Estimate the Exhaust Manifold to remove its gasket and discard it before cleaning and inspecting the manifold. Probe the sealing surface of the Catalytic Converter along with its heat shield before installing the system. Replace damaged or worn components during this check. Position an Exhaust Manifold gasket on the Exhaust Manifold before the combined placement with the Catalytic Converter and cylinder head. First install the Exhaust Manifold bolts at 20 nm (15 lb ft) torque then add Catalytic Converter nuts at 50 nm (37 lb ft). Complete the process by reinstalling the Exhaust Manifold heat shield.

OEM Cadillac STS Exhaust Manifold

Engine Exhaust Manifold

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8 Exhaust Manifolds found

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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
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2009 Cadillac STS | V | 8 Cyl 4.4 L GAS
View related parts
Cadillac STS Exhaust Manifold, Driver Side Part Number: 12571102
Product Specifications
- Other Name: Manifold, Engine Exhaust Manifold; Manifold
- Position: Driver Side
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2011 Cadillac STS | Base, Platinum | 6 Cyl 3.6 L GAS
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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
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007-2010 Cadillac STS | Base, Platinum | 8 Cyl 4.6 L GAS
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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
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007-2010 Cadillac STS | Base, Platinum | 8 Cyl 4.6 L GAS
View related parts
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
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2009 Cadillac STS | V | 8 Cyl 4.4 L GAS
View related parts
Cadillac STS Exhaust Manifold, Passenger Side Part Number: 12638982
Product Specifications
- Other Name: Manifold, Catalytic Converter; Manifold; Manifold, Engine Exhaust Manifold
- Position: Passenger Side
- Replaces: 12567688
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2006 Cadillac STS | Base | 8 Cyl 4.6 L GAS
View related parts
Cadillac STS Exhaust Manifold, Driver Side Part Number: 12638981
Product Specifications
- Other Name: Manifold, Catalytic Converter; Manifold; Manifold, Engine Exhaust Manifold
- Position: Driver Side
- Replaces: 12567687
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2006 Cadillac STS | Base | 8 Cyl 4.6 L GAS
View related parts
Cadillac STS Exhaust Manifold, Passenger Side Part Number: 12571101
Product Specifications
- Other Name: Manifold, Engine Exhaust Manifold; Manifold
- Position: Passenger Side
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2011 Cadillac STS | Base, Platinum | 6 Cyl 3.6 L GAS

Cadillac STS Exhaust Manifold

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A recent example is the Cadillac STS Exhaust Manifold which ca be considered as one of the key parts that testify to the company's viability and performance. Functioning to divert hot exhaust gases produced by the engine towards the exhaust system, Cadillac STS Exhaust Manifold is quite functional in contributing to the overall efficiency of the engines while at the same time suppressing the emissions of dangerous pollutants. This component is applicable to different Cadillac STS type of cars so that every car receives the prime air flow and the elimination of intake reversion or whatever you may call this undesirable phenomena, significant for optimum engine performance. The Cadillac STS Exhaust Manifold has varieties of standard cast iron and stainless steel, these materials add to the exhaust's sturdiness and relevance. Importantly, one can modulate back pressure with features such as Yamaha EXUP system, spinning up the Cadillac STS's engine even more under a wide range of revolutions. Such flexibility, for instance, increases engine power while at the same time enhancing safety and efficacy of the car. Cadillac STS a luxurious vehicle coupled with a powerful engine of choice like the 4.6L Northstar V8 engine shall greatly benefit from the exhaust manifold that ranks high in the market in terms of build quality. In conclusion it can be said that Cadillac STS Exhaust Manifold is a perfect example how Cadillac works on cars and how intensively Cadillac is study exhaust manifold to design a new product for STS cars to give prime performance and durability of cars so, It is very good feature for those who owns STS cars.

Cadillac STS Exhaust Manifold Parts and Q&A

Exhaust Manifold, Driver Side
12571102
Q: How to replace the left side exhaust manifold (LLT) on Cadillac STS?
A:
The replacement process of the left side Exhaust Manifold (LLT) starts with removing the Exhaust Manifold heat shield followed by the oil level indicator removal. Catalytic Converter nuts and Exhaust Manifold bolts need removal at this point while discarding the gasket will be necessary. After the steps remove the manifold exhaust followed by discarding the gasket. Through complete examination check the condition of the Exhaust Manifold. Before installing the system check if the Catalytic Converter seal or heat shield surfaces have wear or damage. Replace such components when necessary. Safely position the new Exhaust Manifold gasket onto the Exhaust Manifold before mounting the Exhaust Manifold with the gasket both on the Catalytic Converter and Cylinder Head. Fasten the Exhaust Manifold bolts using 20 nm (15 lb ft) torque then torque the Catalytic Converter nuts to 50 nm (37 lb ft). The last step involves reinstallation of the oil level indicator with the Exhaust Manifold heat shield.
Exhaust Manifold, Passenger Side
12638996
Q: How to replace the right side exhaust manifold (LP1, LY7, LLT) on Cadillac STS?
A:
The first task for right side Exhaust Manifold (LP1, LY7, LLT) replacement requires heat shield removal. Begin by removing the nuts securing the Catalytic Converter and thereafter the bolts holding the Exhaust Manifold while discarding the gasket. Estimate the Exhaust Manifold to remove its gasket and discard it before cleaning and inspecting the manifold. Probe the sealing surface of the Catalytic Converter along with its heat shield before installing the system. Replace damaged or worn components during this check. Position an Exhaust Manifold gasket on the Exhaust Manifold before the combined placement with the Catalytic Converter and cylinder head. First install the Exhaust Manifold bolts at 20 nm (15 lb ft) torque then add Catalytic Converter nuts at 50 nm (37 lb ft). Complete the process by reinstalling the Exhaust Manifold heat shield.