How to replace the exhaust manifold on a 4.2L engine on GMC Envoy?

The procedure to change an Exhaust Manifold on a 4.2l engine starts by elevating the vehicle followed by disassembly of exhaust pipe bolts from the Exhaust Manifold. Once you lower the vehicle you should remove the manifold heat shield. Secondly you need to remove the Exhaust Manifold bolts while taking out both the Exhaust Manifold and its gasket. Place a new gasket on the Exhaust Manifold followed by installation of the manifold. The technician should use threadlock gm p/n 12345493 (Canadian P/N 10953488) to apply on the manifold bolts before installation. The procedure calls for bolting the manifold at 25 nm (18 ft. Lbs.) during the first, second, and final pass. Install the Exhaust Manifold heat shield studs after tightening them to 10 nm (89 inch lbs.). After raising your car once more you need to mount the exhaust pipe to the manifold with a seal using nuts that you will tighten up to 50 nm (37 ft. Lbs.). Finally, lower the vehicle.

OEM GMC Envoy Exhaust Manifold

Engine Exhaust Manifold

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GMC Envoy Exhaust Manifold, Passenger Side
Part Number: 12600527
$119.36 MSRP: $204.98
You Save: $85.62 (42%)
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Product Specifications
- Other Name: Manifold, Engine Exhaust Manifold; Manifold
- Position: Passenger Side
- Replaces: 12567484
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2009 GMC Envoy | Denali | 8 Cyl 5.3 L GAS
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GMC Envoy Exhaust Manifold
Part Number: 12587310
$196.85 MSRP: $309.73
You Save: $112.88 (37%)
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Product Specifications
- Other Name: Manifold, Engine Exhaust Manifold; Manifold
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2007 GMC Envoy | SLE, SLT | 6 Cyl 4.2 L GAS
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GMC Envoy Exhaust Manifold
Part Number: 88890560
Product Specifications
- Other Name: Manifold, Engine Exhaust Manifold; Manifold
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2005 GMC Envoy | SLE, SLT | 6 Cyl 4.2 L GAS
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GMC Envoy Exhaust Manifold
Part Number: 12637060
$173.53 MSRP: $273.05
You Save: $99.52 (37%)
Product Specifications
- Other Name: Manifold, Engine Exhaust Manifold; Manifold
- Replaces: 12597166
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2008-2009 GMC Envoy | SLE, SLT | 6 Cyl 4.2 L GAS
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GMC Envoy Exhaust Manifold, Driver Side
Part Number: 12600526
$113.18 MSRP: $178.09
You Save: $64.91 (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:
- 2005-2009 GMC Envoy | Denali | 8 Cyl 5.3 L GAS

GMC Envoy Exhaust Manifold

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

GMC Envoy Exhaust Manifold Parts Questions & Experts Answers

Exhaust Manifold, Passenger Side
12600527
Q: How to replace the exhaust manifold on a 4.2L engine on GMC Envoy?
A: The procedure to change an Exhaust Manifold on a 4.2l engine starts by elevating the vehicle followed by disassembly of exhaust pipe bolts from the Exhaust Manifold. Once you lower the vehicle you should remove the manifold heat shield. Secondly you need to remove the Exhaust Manifold bolts while taking out both the Exhaust Manifold and its gasket. Place a new gasket on the Exhaust Manifold followed by installation of the manifold. The technician should use threadlock gm p/n 12345493 (Canadian P/N 10953488) to apply on the manifold bolts before installation. The procedure calls for bolting the manifold at 25 nm (18 ft. Lbs.) during the first, second, and final pass. Install the Exhaust Manifold heat shield studs after tightening them to 10 nm (89 inch lbs.). After raising your car once more you need to mount the exhaust pipe to the manifold with a seal using nuts that you will tighten up to 50 nm (37 ft. Lbs.). Finally, lower the vehicle.