What are the steps involved in inspecting and replacing the camshaft and Camshaft Bearing on Chevrolet Blazer?

After removing the camshaft from the engine, clean it with solvent and dry it, then inspect the bearing journals for uneven wear, pitting, and evidence of seizure; if damaged, both the camshaft and bearings will need replacement. Measure the inside diameter of each camshaft bearing, taking two measurements at each bearing, and subtract the bearing journal diameters from the corresponding bearing inside diameter measurement to obtain the oil clearance; excessive clearance necessitates new bearings. Camshaft bearing replacement requires special tools and expertise, so it is advisable to take the block to an automotive machine shop. Check the camshaft lobes for heat discoloration, score marks, chipped areas, pitting, and uneven wear; if the lobes are in good condition and the lobe lift measurements are as specified, the camshaft can be reused. Good used roller lifters can be reinstalled with a new camshaft, and while the original camshaft can be used if new lifters are installed, it is recommended to replace both together, especially for high-mileage engines. For V6 engines, if the balance shaft is to be removed, the balance shaft gear bolt should be removed before the timing chain to hold the shaft while loosening the bolt. Remove the two bolts and the balance shaft retainer at the front of the block, then use a slide-hammer threaded into the front of the balance shaft to knock it out. Inspect the balance shaft and measure the bearing journal diameters; if measurements exceed specifications, replace the balance shaft, bearing, and bushing as a set. The rear bushing, similar to a camshaft bearing, must be installed by a machine shop with the proper tools and alignment. Inspect the balance shaft drive gear and the balance shaft driven gear for signs of wear, pitting, broken teeth, or rough operation, as both gears are serviced only as a set.

Genuine Chevrolet Blazer Camshaft Bearing

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14 Camshaft Bearings found

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Chevrolet Blazer Camshaft Bearing
Part Number: 12453171
$53.14 MSRP: $83.61
You Save: $30.47 (37%)
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Product Specifications
- Other Name: BEARING, Engine Camshaft & Balance Shaft Front; Bearing, Camshaft Bearing
- Replaces: 00474006, 474006
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1987-2005 Chevrolet Blazer | 1/2 TON, 2 DOOR, 4 DOOR | 6 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7L
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Chevrolet Blazer Bearing, Camshaft #3 &4
Part Number: 12508998
$35.87 MSRP: $59.37
You Save: $23.50 (40%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: BEARING, Engine Camshaft & Balance Shaft Front; Bearing
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1991 Chevrolet Blazer | 1/2 TON
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Chevrolet Blazer Bearing, Camshaft #2 & Rear
Part Number: 12508997
$1.15 MSRP: $1.80
You Save: $0.65 (37%)
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Product Specifications
- Other Name: BEARING, Engine Camshaft & Balance Shaft Front; Bearing
- Position: Rear
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1991 Chevrolet Blazer | 1/2 TON
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Chevrolet Blazer Camshaft Bearing
Part Number: 14002525
$1.04 MSRP: $1.71
You Save: $0.67 (40%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: BEARING, Engine Camshaft & Balance Shaft Front; Bearing, Camshaft Bearing
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1989 Chevrolet Blazer | 1/2 TON
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Chevrolet Blazer Camshaft Bearing
Part Number: 19301057
$25.03 MSRP: $38.36
You Save: $13.33 (35%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: BEARING, Engine Camshaft & Balance Shaft Front
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1992-2005 Chevrolet Blazer | 1/2 TON, 2 DOOR, 4 DOOR | 6 Cyl 4.3L, 8 Cyl 5.7L
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Chevrolet Blazer Camshaft Bearing
Part Number: 12453170
$5.85 MSRP: $7.28
You Save: $1.43 (20%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: BEARING, Engine Camshaft & Balance Shaft Front; Bearing, Camshaft Bearing
- Replaces: 00474005, 474005
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-2005 Chevrolet Blazer | 1/2 TON, 2 DOOR, 4 DOOR | 6 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7L
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Chevrolet Blazer Bearing, Camshaft Thrust.
Part Number: 14022644
Product Specifications
- Other Name: PLATE, Engine Camshaft Thrust
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1994 Chevrolet Blazer | 1/2 TON | 8 Cyl 6.2L Diesel, 8 Cyl 6.5L Diesel
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Chevrolet Blazer Bearing, Camshaft #2
Part Number: 14048454
Product Specifications
- Other Name: BEARING, Engine Camshaft & Balance Shaft Front; Bearing
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1994 Chevrolet Blazer | 1/2 TON | 8 Cyl 6.2L Diesel, 8 Cyl 6.5L Diesel
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Chevrolet Blazer Bearing, Camshaft #3
Part Number: 14048455
Product Specifications
- Other Name: BEARING, Engine Camshaft & Balance Shaft Front; Bearing
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1994 Chevrolet Blazer | 1/2 TON | 8 Cyl 6.2L Diesel, 8 Cyl 6.5L Diesel
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Chevrolet Blazer Bearing, Camshaft #4
Part Number: 14048456
Product Specifications
- Other Name: BEARING, Engine Camshaft & Balance Shaft Front; Bearing
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1994 Chevrolet Blazer | 1/2 TON | 8 Cyl 6.2L Diesel, 8 Cyl 6.5L Diesel
View related parts
Chevrolet Blazer Bearing, Camshaft #5
Part Number: 14048457
Product Specifications
- Other Name: BEARING, Engine Camshaft & Balance Shaft Front; Bearing
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1994 Chevrolet Blazer | 1/2 TON | 8 Cyl 6.2L Diesel, 8 Cyl 6.5L Diesel
View related parts
Chevrolet Blazer Bearing, Camshaft #1
Part Number: 12508996
Product Specifications
- Other Name: BEARING, Engine Camshaft; Bearing
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1991 Chevrolet Blazer | 1/2 TON
View related parts
Chevrolet Blazer Bearing, Camshaft #1
Part Number: 14048453
Product Specifications
- Other Name: BEARING, Engine Camshaft & Balance Shaft Front; Bearing
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1994 Chevrolet Blazer | 1/2 TON | 8 Cyl 6.2L Diesel, 8 Cyl 6.5L Diesel
View related parts
Chevrolet Blazer Camshaft Bearing
Part Number: 12453172
Product Specifications
- Other Name: BEARING, Engine Camshaft & Balance Shaft Front; Bearing, Camshaft Bearing
- Replaces: 00474007, 474007
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1987-2005 Chevrolet Blazer | 1/2 TON, 2 DOOR, 4 DOOR | 6 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7L

Chevrolet Blazer Camshaft Bearing

Chevrolet Blazer Camshaft Bearing provides the rotating camshaft with a smooth, low-friction cradle for valve timing to remain precise and power to remain strong. Inside the V6 and V8 engines, this Camshaft Bearing is a cylindrical plain bearing pressed into precision-machined block bores and fed a constant stream of pump-driven oil that forms the vital film the cam rides on. Proper clearance, typically a hair between 0.001 and 0.0035 inch, allows the Camshaft Bearing film to keep metal surfaces away from each other while centering the shaft. Over the years, there have been two styles of construction, bi-metal and tri-metal, both of which are bonded to a steel case but differ in the lining that contacts the cam, and this difference influences the Camshaft Bearing's ability to handle load and contaminants. Bi-metal versions feature tough aluminum alloy with often silicon infusion for seizure resistance, while tri-metal adds a copper layer and thin lead-tin-copper overlay to increase embedability and fatigue strength, giving Chevrolet drivers options to suit stock, towing, or performance needs in any of the Blazer engines. No matter the style, proper crush seats the insert well so that oil holes are lined up since a shifted Camshaft Bearing starves lobes and upsets timing. Following factory specifications keeps every Chevrolet Blazer running quiet and responsive long beyond the rotation of the odometer.

Each OEM Chevrolet Blazer Camshaft Bearing we offer is competitively priced and comes with the assurance of the manufacturer's warranty for the part. Furthermore, we guarantee the speedy delivery of your orders right to your doorstep. Our hassle-free return policy is also in place for your peace of mind.

Chevrolet Blazer Camshaft Bearing Parts Questions & Experts Answers

Camshaft Bearing
12453171
Q: What are the steps involved in inspecting and replacing the camshaft and Camshaft Bearing on Chevrolet Blazer?
A:
After removing the camshaft from the engine, clean it with solvent and dry it, then inspect the bearing journals for uneven wear, pitting, and evidence of seizure; if damaged, both the camshaft and bearings will need replacement. Measure the inside diameter of each camshaft bearing, taking two measurements at each bearing, and subtract the bearing journal diameters from the corresponding bearing inside diameter measurement to obtain the oil clearance; excessive clearance necessitates new bearings. Camshaft bearing replacement requires special tools and expertise, so it is advisable to take the block to an automotive machine shop. Check the camshaft lobes for heat discoloration, score marks, chipped areas, pitting, and uneven wear; if the lobes are in good condition and the lobe lift measurements are as specified, the camshaft can be reused. Good used roller lifters can be reinstalled with a new camshaft, and while the original camshaft can be used if new lifters are installed, it is recommended to replace both together, especially for high-mileage engines. For V6 engines, if the balance shaft is to be removed, the balance shaft gear bolt should be removed before the timing chain to hold the shaft while loosening the bolt. Remove the two bolts and the balance shaft retainer at the front of the block, then use a slide-hammer threaded into the front of the balance shaft to knock it out. Inspect the balance shaft and measure the bearing journal diameters; if measurements exceed specifications, replace the balance shaft, bearing, and bushing as a set. The rear bushing, similar to a camshaft bearing, must be installed by a machine shop with the proper tools and alignment. Inspect the balance shaft drive gear and the balance shaft driven gear for signs of wear, pitting, broken teeth, or rough operation, as both gears are serviced only as a set.