How to replace the right side exhaust manifold (RPO LY7) on Buick LaCrosse?

The right side Exhaust Manifold replacement process (RPO LY7) requires air inlet duct and master cylinder fluid level sensor removal so that you can lower the powertrain adequately. You must start by taking off the engine mount struts followed by lifting the vehicle to its maximum height. The procedure requires a long extension to release the Catalytic Converter for access to the exhaust crossover pipe nuts. Deal with the exhaust crossover pipe by removing both right bank Exhaust Manifold nuts and Exhaust Manifold bolts before removing the Exhaust Manifold which requires discarding the gasket. The first step to install a new Exhaust Manifold requires users to remove the heat shield bolts, separate the heat shield before cleaning both sealing surfaces. To install the heat shield position it above the Exhaust Manifold before screwing bolts down to 10 n.m (89 lb in). The bolt passes through the Exhaust Manifold hole before you place a new gasket and correctly position the manifold next to the Cylinder Head until the bolt reaches a proper tension. Screw in all remaining Exhaust Manifold bolts until they achieve 20 n.m (15 lb ft) of torque while crossover exhaust pipe nuts require a torque setting of 34 n.m (25 lb ft). First reconnect the Catalytic Converter before you link the intermediate Steering Shaft to the steering gear then lower the vehicle and lastly replace the engine mount struts master cylinder fluid level sensor and air inlet duct.

OEM Buick LaCrosse Exhaust Manifold

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11 Exhaust Manifolds found

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Buick LaCrosse Exhaust Manifold
Part Number: 12643496
$175.02 MSRP: $300.58
You Save: $125.56 (42%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Manifold, Engine Exhaust Manifold
- Replaces: 12615133, 12630741
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2010-2016 Buick LaCrosse | Base, Convenience, CX, CXL, Leather | 4 Cyl 2.4 L GAS, 4 Cyl 2.4 L MILD HYBRID EV-GAS (MHEV)
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Buick LaCrosse Exhaust Manifold
Part Number: 12656531
$108.12 MSRP: $152.93
You Save: $44.81 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Manifold, Engine Exhaust Manifold
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2018-2019 Buick LaCrosse | Essence, Preferred, Premium
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Buick LaCrosse Exhaust Manifold
Part Number: 12608747
$53.14 MSRP: $90.48
You Save: $37.34 (42%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Manifold, Engine Exhaust Manifold
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2010-2011 Buick LaCrosse | CX, CXL, CXS | 4 Cyl 2.4 L GAS, 6 Cyl 3.6 L GAS
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Buick LaCrosse Exhaust Manifold, Passenger Side
Part Number: 12580260
$69.79 MSRP: $109.32
You Save: $39.53 (37%)
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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:
- 2007-2009 Buick LaCrosse | CX, CXL | 6 Cyl 3.8 L GAS
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Buick LaCrosse Exhaust Manifold, Passenger Side
Part Number: 12569054
$184.41 MSRP: $290.15
You Save: $105.74 (37%)
Ships in 1-3 Business Days
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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:
- 2008-2009 Buick LaCrosse | Super | 8 Cyl 5.3 L GAS
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Buick LaCrosse Exhaust Manifold, Driver Side
Part Number: 12569053
$197.47 MSRP: $310.70
You Save: $113.23 (37%)
Ships in 1-3 Business Days
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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:
- 2008-2009 Buick LaCrosse | Super | 8 Cyl 5.3 L GAS
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Buick LaCrosse Exhaust Manifold, Driver Side
Part Number: 12588004
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:
- 2005-2009 Buick LaCrosse | CX, CXL | 6 Cyl 3.8 L GAS
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Buick LaCrosse Exhaust Manifold, Passenger Side
Part Number: 12575855
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:
- 2005-2009 Buick LaCrosse | CX, CXL | 6 Cyl 3.8 L GAS
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Buick LaCrosse Exhaust Manifold, Passenger Side
Part Number: 12576864
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:
- 2005-2006 Buick LaCrosse | CX, CXL | 6 Cyl 3.8 L GAS
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Buick LaCrosse Exhaust Manifold, Passenger Side
Part Number: 12571075
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:
- 2005-2008 Buick LaCrosse | CXS | 6 Cyl 3.6 L GAS
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Buick LaCrosse Exhaust Manifold, Driver Side
Part Number: 12571074
$166.64 MSRP: $262.19
You Save: $95.55 (37%)
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:
- 2005-2008 Buick LaCrosse | CXS | 6 Cyl 3.6 L GAS

Buick LaCrosse Exhaust Manifold

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Buick LaCrosse Exhaust Manifold Parts Questions & Experts Answers

Exhaust Manifold, Passenger Side
12580260
Q: How to replace the right side exhaust manifold (RPO LY7) on Buick LaCrosse?
A: The right side Exhaust Manifold replacement process (RPO LY7) requires air inlet duct and master cylinder fluid level sensor removal so that you can lower the powertrain adequately. You must start by taking off the engine mount struts followed by lifting the vehicle to its maximum height. The procedure requires a long extension to release the Catalytic Converter for access to the exhaust crossover pipe nuts. Deal with the exhaust crossover pipe by removing both right bank Exhaust Manifold nuts and Exhaust Manifold bolts before removing the Exhaust Manifold which requires discarding the gasket. The first step to install a new Exhaust Manifold requires users to remove the heat shield bolts, separate the heat shield before cleaning both sealing surfaces. To install the heat shield position it above the Exhaust Manifold before screwing bolts down to 10 n.m (89 lb in). The bolt passes through the Exhaust Manifold hole before you place a new gasket and correctly position the manifold next to the Cylinder Head until the bolt reaches a proper tension. Screw in all remaining Exhaust Manifold bolts until they achieve 20 n.m (15 lb ft) of torque while crossover exhaust pipe nuts require a torque setting of 34 n.m (25 lb ft). First reconnect the Catalytic Converter before you link the intermediate Steering Shaft to the steering gear then lower the vehicle and lastly replace the engine mount struts master cylinder fluid level sensor and air inlet duct.

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