How to replace the rear crankshaft seal on Chevrolet Blazer?

Replacing the Crankshaft rear oil seal starts by removing the Transmission Assembly along with the engine Flywheel. Professionally use the tool to remove the Crankshaft rear oil seal from its housing before discarding it. Start by cleaning away all soiling and rust buildup from this area. Place 2 to 3 drops of clean engine oil on the Crankshaft rear oil seal housing bore and the outside diameters of engine Flywheel pilot flange and Flywheel locator pin and Crankshaft seal surface area. Check for imperfections on the j 35621-b rear main seal installer (J 35621-B) flange and remove them using fine-grade emery cloth. Maintain a lubricant-free area surrounding the Crankshaft rear oil seal lip surface. Install the Crankshaft rear oil seal onto j 35621-b after applying 2 to 3 drops of clean engine oil to its outside diameter. Secure the j 35621-b onto the Crankshaft's rear end by tightening the tool bolts by hand until the assembly is snug. Correct alignment of the Crankshaft rear oil seal requires special attention because improper installation can damage the seal. Place the seal as near to flush position while maintaining square alignment with the housing. Use a clockwise motion on the j 35621-b wing nut while installing the seal but stop when you encounter increased resistance at the housing bore bottom. Using a counter-clockwise motion on the tool's wing nut frees the j 35621-b from the Crankshaft position. Next, take out the tool while cleaning off any remaining engine oil then replace the transmission and Flywheel assembly.

How to replace the front crankshaft seal on Chevrolet Blazer?

The removal process of crankshaft front oil seal begins with taking out the crankshaft balancer. Use an appropriate tool to detach the crankshaft front oil seal then inspect the seal bore on the engine front cover and the crankshaft balancer seal area for damage. Clean engine oil should be used to lubricate the new seal exterior before its installation. You should use the hammer-operated Cover Aligner/Seal Installer (J 35468) to set the new crankshaft front oil seal directly against the engine front cover while maintaining its squareness to the face of the cover. Finally, reinstall the crankshaft balancer.

OEM Chevrolet Blazer Crankshaft Seal

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13 Crankshaft Seals found

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Chevrolet Blazer Rear Main Seal, Front Part Number: 14090906
$18.41 MSRP: $30.33
You Save: $11.92 (40%)
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Product Specifications
- Other Name: Seal, Engine Front Cover & Crankshaft Seal; Timing Cover Gasket; Timing Cover Seal; Oil Seal; Crankshaft Seal; Front Crank Seal; Timing Cover Seal; Front Cover Seal; Engine Front Cover Seal.
- Position: Front
- Replaces: 12577710
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1992-1995 Chevrolet Blazer | Base, Cheyenne, LT, Silverado, Silverado Sport | 6 Cyl 4.3 L GAS, 8 Cyl 5.7 L GAS
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Chevrolet Blazer Rear Main Seal Part Number: 23503969
$41.79 MSRP: $68.84
You Save: $27.05 (40%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Seal, Engine Rear Main Bearing; Crankshaft Seal
- Position: Rear
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1994 Chevrolet Blazer | Base, Silverado, Silverado Sport | 8 Cyl 6.5 L DIESEL
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Chevrolet Blazer Crankshaft Seal, Front Part Number: 12626923
$19.87 MSRP: $32.73
You Save: $12.86 (40%)
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Product Specifications
- Other Name: Seal Assembly-Crankshaft Front Oil; Front Crank Seal; Front Seal; Seal, Engine Front Cover & Crankshaft Seal
- Position: Front
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2019-2021 Chevrolet Blazer | Base, L, LT | 4 Cyl 2.5 L GAS
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Chevrolet Blazer Rear Main Seal Part Number: 10088158
$34.26 MSRP: $56.44
You Save: $22.18 (40%)
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Product Specifications
- Other Name: Seal, Engine Rear Main Bearing; Crankshaft Seal; Cover Seal; Rear Main Seal Retainer
- Position: Rear
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1987-1995 Chevrolet Blazer | Base, Cheyenne, Custom Deluxe, LT, Scottsdale, Silverado, Silverado Sport | 6 Cyl 4.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS
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Chevrolet Blazer Oil Seal, Front Part Number: 10128316
$21.49 MSRP: $35.40
You Save: $13.91 (40%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Seal, Engine Front Cover & Crankshaft Seal; Timing Cover Gasket; Timing Cover Seal; Oil Filter Seal; Front Seal; Timing Cover Oil Seal; Crankshaft Seal
- Position: Front
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1995-2005 Chevrolet Blazer | Base, LS, LT, Trailblazer, Xtreme, ZR2 | 6 Cyl 4.3 L GAS
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Chevrolet Blazer Thermostat Housing Gasket, Front Part Number: 10191640
$20.61 MSRP: $33.96
You Save: $13.35 (40%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Seal, Engine Front Cover & Crankshaft Seal; Timing Cover Gasket; Timing Cover Seal; Timing Cover Oil Seal; Cover Seal; Front Cover Seal; Seal, Engine Crankshaft Front
- Position: Front
- Replaces: 23500286, 3860095, 03860095
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1994 Chevrolet Blazer
- 1987-1991 Chevrolet Blazer | Custom Deluxe, Scottsdale, Silverado | 8 Cyl 6.2 L DIESEL
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Chevrolet Blazer Front Crank Seal Part Number: 23500286
$20.61 MSRP: $33.96
You Save: $13.35 (40%)
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Product Specifications
- Other Name: Seal Assembly-Crankshaft Front Oil
- Position: Front
- Replaced by: 10191640
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1987-1991 Chevrolet Blazer | Custom Deluxe, Scottsdale, Silverado | 8 Cyl 6.2 L DIESEL
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Chevrolet Blazer Rear Main Seal Part Number: 89018163
$31.62 MSRP: $52.08
You Save: $20.46 (40%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Seal Kit, Crankshaft Rear Oil; Crankshaft Seal; Seal Kit, Engine Rear Main Bearing
- Position: Rear
- Replaces: 12555769
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1999-2005 Chevrolet Blazer | Base, LS, LT, Trailblazer, Xtreme, ZR2 | 6 Cyl 4.3 L GAS
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Chevrolet Blazer Crankshaft Seal, Front Part Number: 12654010
$4.69 MSRP: $7.72
You Save: $3.03 (40%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Seal Assembly-Crankshaft Front Oil; Front Crank Seal; Front Seal; Seal, Engine Front Cover & Crankshaft Seal
- Position: Front
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2019-2024 Chevrolet Blazer | Base, LT, Premier, RS | 6 Cyl 3.6 L GAS
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Chevrolet Blazer Rear Main Seal Part Number: 12554314
$34.42 MSRP: $56.69
You Save: $22.27 (40%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Seal, Engine Rear Main Bearing; Crankshaft Seal
- Position: Rear
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-1998 Chevrolet Blazer | Base, LS, LT | 6 Cyl 4.3 L GAS
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Chevrolet Blazer Crankshaft Seal, Front Part Number: 10111769
$2.78 MSRP: $4.35
You Save: $1.57 (37%)
ADD TO CART
Product Specifications
- Other Name: Seal, Engine Crankshaft Front; Front Crank Seal; Timing Cover Seal; Crankshaft Damper Seal; Engine Front Cover Seal.
- Position: Front
- Replaced by: 10243247
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1987-1991 Chevrolet Blazer | Custom Deluxe, Scottsdale, Silverado | 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS
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Chevrolet Blazer Rear Main Seal, Green Line Part Number: 12591866
Product Specifications
- Other Name: Seal, Engine Rear Main Bearing; Engine Crankshaft Seal; Crankshaft Seal
- Position: Rear
- Replaces: 90298408, 90325572, 90280462, 90354378
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2019-2021 Chevrolet Blazer | Base, L, LT | 4 Cyl 2.5 L GAS
View related parts
Chevrolet Blazer Rear Main Seal Part Number: 23500139
Product Specifications
- Other Name: Seal, Engine Rear Main Bearing; Crankshaft Seal
- Position: Rear
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1987-1991 Chevrolet Blazer | Custom Deluxe, Scottsdale, Silverado | 8 Cyl 6.2 L DIESEL

Chevrolet Blazer Crankshaft Seal

Want to cut long-term maintenance and repair costs? Choose OEM Crankshaft Seal. Those parts deliver top durability you can trust. On our site, you'll find a huge catalog of genuine Chevrolet Blazer parts. Prices are unbeatable, so you can keep more in your pocket. Every OEM Chevrolet Blazer Crankshaft Seal includes a manufacturer's warranty. You can also get an easy return policy that keeps buying risk free. Fast delivery, get your car on the road quickly. It's simple to search, compare, and order. Stop guessing about quality or fit. Order today and save with parts that last.

Chevrolet Blazer has a Crankshaft Seal in the front side of the engine to avoid the leakage of the engine oil out of the crankcase. This round seal is normally made from metal and rubber and is essential in covering parts of the engine that requires lubrication to reduce on friction and extend the engine's efficiency. In the course of production, it is likely that different varieties of crankshaft seals may have been fitted across the flexible Blazer range, although the use of the component itself appears to remain the same. One of the signs that can be indicative of a bad crankshaft seal is oil leakage, and signs of poor performance especially when the car is old (high mileage vehicles) this can improve if the crank shaft seal is replaced.

Chevrolet Blazer Crankshaft Seal Parts and Q&A

Rear Main Seal
89018163
Q: How to replace the rear crankshaft seal on Chevrolet Blazer?
A:
Replacing the Crankshaft rear oil seal starts by removing the Transmission Assembly along with the engine Flywheel. Professionally use the tool to remove the Crankshaft rear oil seal from its housing before discarding it. Start by cleaning away all soiling and rust buildup from this area. Place 2 to 3 drops of clean engine oil on the Crankshaft rear oil seal housing bore and the outside diameters of engine Flywheel pilot flange and Flywheel locator pin and Crankshaft seal surface area. Check for imperfections on the j 35621-b rear main seal installer (J 35621-B) flange and remove them using fine-grade emery cloth. Maintain a lubricant-free area surrounding the Crankshaft rear oil seal lip surface. Install the Crankshaft rear oil seal onto j 35621-b after applying 2 to 3 drops of clean engine oil to its outside diameter. Secure the j 35621-b onto the Crankshaft's rear end by tightening the tool bolts by hand until the assembly is snug. Correct alignment of the Crankshaft rear oil seal requires special attention because improper installation can damage the seal. Place the seal as near to flush position while maintaining square alignment with the housing. Use a clockwise motion on the j 35621-b wing nut while installing the seal but stop when you encounter increased resistance at the housing bore bottom. Using a counter-clockwise motion on the tool's wing nut frees the j 35621-b from the Crankshaft position. Next, take out the tool while cleaning off any remaining engine oil then replace the transmission and Flywheel assembly.
Oil Seal, Front
10128316
Q: How to replace the front crankshaft seal on Chevrolet Blazer?
A:
The removal process of crankshaft front oil seal begins with taking out the crankshaft balancer. Use an appropriate tool to detach the crankshaft front oil seal then inspect the seal bore on the engine front cover and the crankshaft balancer seal area for damage. Clean engine oil should be used to lubricate the new seal exterior before its installation. You should use the hammer-operated Cover Aligner/Seal Installer (J 35468) to set the new crankshaft front oil seal directly against the engine front cover while maintaining its squareness to the face of the cover. Finally, reinstall the crankshaft balancer.