How to replace the left exhaust manifold (LA3, LY9) on Cadillac CTS?

The first step for left Exhaust Manifold (LA3, LY9) replacement requires the accessory mounting bracket removal and heated Oxygen Sensor pigtail disconnection from the wiring harness connector. The process starts by taking off the left Catalytic Converter together with any replacement of the heated Oxygen Sensor. Remove the left Exhaust Manifold by taking out its retaining nuts before you can take it off with its gasket and do not use the discarded gasket again. The left Exhaust Manifold requires inspection after thorough cleaning beforeplacement. Install an Exhaust Manifold gasket on the cylinder head studs while placing the left Exhaust Manifold onto the corresponding left cylinder head. First install the left Exhaust Manifold nuts while applying torque to 20 nm (15 ft. Lbs.). Return the heated Oxygen Sensor to its position if it was done during maintenance then install the left Catalytic Converter. The final step is to join the heated Oxygen Sensor pigtail to the wiring harness connector as well as to reinstall the accessory mounting bracket.

OEM Cadillac CTS Exhaust Manifold

Engine Exhaust Manifold

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9 Exhaust Manifolds found

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Cadillac CTS Exhaust Manifold
Part Number: 12670220
$303.17 MSRP: $516.12
You Save: $212.95 (42%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Manifold, Engine Exhaust Manifold
- Replaces: 12627069
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2014-2019 Cadillac CTS | Base, Luxury, Performance, Premium | 4 Cyl 2.0 L GAS
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Cadillac CTS Exhaust Manifold, Driver Side
Part Number: 24412093
$26.27 MSRP: $390.88
You Save: $364.61 (94%)
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Product Specifications
- Other Name: Manifold, Engine Exhaust Manifold; Catalytic Converter; Converter; Manifold
- Position: Driver Side
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2003-2004 Cadillac CTS | Base, Luxury, Luxury Sport | 6 Cyl 3.2 L GAS
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Cadillac CTS Exhaust Manifold, Driver Side
Part Number: 12611322
$199.85 MSRP: $311.63
You Save: $111.78 (36%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Manifold, Engine Exhaust Manifold; Manifold
- Position: Driver Side
- Replaces: 12578030
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2009-2015, 2004-2007 Cadillac CTS | V | 8 Cyl 5.7 L GAS, 8 Cyl 6.0 L GAS, 8 Cyl 6.2 L GAS
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Cadillac CTS Exhaust Manifold, Passenger Side
Part Number: 12629729
$381.79 MSRP: $600.72
You Save: $218.93 (37%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Manifold, Engine Exhaust Manifold
- Position: Passenger Side
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2016-2019 Cadillac CTS | V | 8 Cyl 6.2 L GAS
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Cadillac CTS Exhaust Manifold, Passenger Side
Part Number: 12611324
$198.07 MSRP: $311.63
You Save: $113.56 (37%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Manifold, Engine Exhaust Manifold; Manifold
- Position: Passenger Side
- Replaces: 12578029
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2009-2015, 2004-2007 Cadillac CTS | V | 8 Cyl 5.7 L GAS, 8 Cyl 6.0 L GAS, 8 Cyl 6.2 L GAS
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Cadillac CTS 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:
- 2004-2011 Cadillac CTS | Base, Luxury, Performance, Premium, V | 6 Cyl 2.8 L GAS, 6 Cyl 3.6 L GAS, 8 Cyl 6.2 L GAS
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Cadillac CTS Exhaust Manifold, Passenger Side
Part Number: 24412092
Product Specifications
- Other Name: Manifold, Engine Exhaust Manifold; Catalytic Converter; Converter; Manifold
- Position: Passenger Side
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2003-2004 Cadillac CTS | Base, Luxury, Luxury Sport | 6 Cyl 3.2 L GAS
View related parts
Cadillac CTS 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:
- 2004-2011 Cadillac CTS | Base, Luxury, Performance, Premium, V | 6 Cyl 2.8 L GAS, 6 Cyl 3.6 L GAS, 8 Cyl 6.2 L GAS
View related parts
Cadillac CTS Exhaust Manifold, Driver Side
Part Number: 12629728
$394.39 MSRP: $620.55
You Save: $226.16 (37%)
Product Specifications
- Other Name: Manifold, Engine Exhaust Manifold
- Position: Driver Side
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2016-2019 Cadillac CTS | V | 8 Cyl 6.2 L GAS

Cadillac CTS Exhaust Manifold

Our website offers an extensive catalog of genuine Cadillac CTS Exhaust Manifold at unbeatable prices. Every OEM Cadillac CTS Exhaust Manifold comes with a manufacturer's warranty, an easy return policy, and rapid delivery service. Don't miss out on this great opportunity!

Cadillac CTS Exhaust Manifold Parts Questions & Experts Answers

Exhaust Manifold, Driver Side
12611322
Q: How to replace the left exhaust manifold (LA3, LY9) on Cadillac CTS?
A: The first step for left Exhaust Manifold (LA3, LY9) replacement requires the accessory mounting bracket removal and heated Oxygen Sensor pigtail disconnection from the wiring harness connector. The process starts by taking off the left Catalytic Converter together with any replacement of the heated Oxygen Sensor. Remove the left Exhaust Manifold by taking out its retaining nuts before you can take it off with its gasket and do not use the discarded gasket again. The left Exhaust Manifold requires inspection after thorough cleaning beforeplacement. Install an Exhaust Manifold gasket on the cylinder head studs while placing the left Exhaust Manifold onto the corresponding left cylinder head. First install the left Exhaust Manifold nuts while applying torque to 20 nm (15 ft. Lbs.). Return the heated Oxygen Sensor to its position if it was done during maintenance then install the left Catalytic Converter. The final step is to join the heated Oxygen Sensor pigtail to the wiring harness connector as well as to reinstall the accessory mounting bracket.

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