How to replace the right side exhaust manifold on a 4.3L engine on 2008 GMC Sierra 1500?

Starting the right side Exhaust Manifold replacement (4.3L) requires elimination of the heated Oxygen Sensor (HO2S) and unfastening the Catalytic Converter to Exhaust Manifold nuts . Before working on the Exhaust Manifold users should lower the vehicle and unfasten the heat shield bolts and shield. Take out the spark plugs before relocating their wires as needed. You should remove the Exhaust Manifold bolts first before extracting the Exhaust Manifold with its gaskets which need disposal. Additionally you should remove the Exhaust Manifold to Catalytic Converter seal for disposal. Insert a new Exhaust Manifold to Catalytic Converter seal into the Exhaust Manifold before positioning the Exhaust Manifold to its installation place and installing manifold studs to the Catalytic Converter. Install the dual new Exhaust Manifold gaskets between the Cylinder Head and the manifold before you torque the Exhaust Manifold bolts to 30 n.m (22 lb ft) with the manifold stud. Replace the spark plugs before mounting the Exhaust Manifold heat shield onto the manifold and screwing bolt attachments to 9 n.m force (80 lb in torque measurement). The vehicle must be raised for safety before adding the new Catalytic Converter and securing its Exhaust Manifold nuts with 50 n.m (37 lb ft) torque setting before lowering the vehicle.

OEM 2008 GMC Sierra 1500 Exhaust Manifold

Engine Exhaust Manifold

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2008 GMC Sierra 1500 Exhaust Manifold, Driver Side
Part Number: 12616285
$129.10 MSRP: $219.79
You Save: $90.69 (42%)
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Product Specifications
- Other Name: Manifold, Engine Exhaust Manifold; Manifold
- Position: Driver Side
- Replaces: 12602037, 12562235, 12571678, 12564155
- Item Weight: 10.30 Pounds
- Item Dimensions: 9.7 x 8.2 x 24.7 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12616285
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2008 GMC Sierra 1500 Submodels:
- Base, C3, Denali, HT, Hybrid, SL, SLE, SLT, WT, XFE | 8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L FULL HYBRID EV-GAS (FHEV), 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L FULL HYBRID EV-FLEX (FHEV), 8 Cyl 6.0 L FULL HYBRID EV-GAS (FHEV), 8 Cyl 6.0 L GAS, 8 Cyl 6.2 L FLEX, 8 Cyl 6.2 L GAS
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2008 GMC Sierra 1500 Exhaust Manifold, Passenger Side
Part Number: 12592083
$188.58 MSRP: $296.72
You Save: $108.14 (37%)
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Product Specifications
- Other Name: Manifold, Engine Exhaust Manifold
- Position: Passenger Side
- Item Weight: 13.70 Pounds
- Item Dimensions: 22.1 x 12.6 x 9.3 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12592083
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2008 GMC Sierra 1500 Submodels:
- WT | 6 Cyl 4.3 L GAS
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2008 GMC Sierra 1500 Exhaust Manifold, Driver Side
Part Number: 12592082
$179.14 MSRP: $246.00
You Save: $66.86 (28%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Manifold, Engine Exhaust Manifold
- Position: Driver Side
- Item Weight: 12.20 Pounds
- Item Dimensions: 22.4 x 12.1 x 7.2 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12592082
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2008 GMC Sierra 1500 Submodels:
- WT | 6 Cyl 4.3 L GAS
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2008 GMC Sierra 1500 Exhaust Manifold
Part Number: 12677665
$207.21 MSRP: $355.86
You Save: $148.65 (42%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Manifold, Engine Exhaust Manifold; Manifold
- Replaces: 12648339
- Item Weight: 14.40 Pounds
- Item Dimensions: 9.2 x 5.3 x 25.1 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12677665
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2008 GMC Sierra 1500 Submodels:
- Base, Denali, HT, Hybrid, SL, SLE, SLT, WT, XFE | 8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L FULL HYBRID EV-GAS (FHEV), 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L FULL HYBRID EV-FLEX (FHEV), 8 Cyl 6.0 L FULL HYBRID EV-GAS (FHEV), 8 Cyl 6.0 L GAS, 8 Cyl 6.2 L FLEX, 8 Cyl 6.2 L GAS

2008 GMC Sierra 1500 Exhaust Manifold

With a comprehensive array of OEM 2008 GMC Sierra 1500 Exhaust Manifold, from fuel pumps to door handles, our website is a one-stop-shop for your needs. All our genuine 2008 GMC Sierra 1500 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.

2008 GMC Sierra 1500 Exhaust Manifold Parts Questions & Experts Answers

Q: How to replace the right side exhaust manifold on a 4.3L engine on 2008 GMC Sierra 1500?
A: Starting the right side Exhaust Manifold replacement (4.3L) requires elimination of the heated Oxygen Sensor (HO2S) and unfastening the Catalytic Converter to Exhaust Manifold nuts . Before working on the Exhaust Manifold users should lower the vehicle and unfasten the heat shield bolts and shield. Take out the spark plugs before relocating their wires as needed. You should remove the Exhaust Manifold bolts first before extracting the Exhaust Manifold with its gaskets which need disposal. Additionally you should remove the Exhaust Manifold to Catalytic Converter seal for disposal. Insert a new Exhaust Manifold to Catalytic Converter seal into the Exhaust Manifold before positioning the Exhaust Manifold to its installation place and installing manifold studs to the Catalytic Converter. Install the dual new Exhaust Manifold gaskets between the Cylinder Head and the manifold before you torque the Exhaust Manifold bolts to 30 n.m (22 lb ft) with the manifold stud. Replace the spark plugs before mounting the Exhaust Manifold heat shield onto the manifold and screwing bolt attachments to 9 n.m force (80 lb in torque measurement). The vehicle must be raised for safety before adding the new Catalytic Converter and securing its Exhaust Manifold nuts with 50 n.m (37 lb ft) torque setting before lowering the vehicle.