How to replace the rear crankshaft seal on Chevrolet Blazer?

To replace the crankshaft rear oil seal, you should first remove the Transmission Assembly and the engine Flywheel. Next, with a suitable tool, remove the crankshaft rear oil seal with care from the crankshaft rear oil seal housing, discard the old oil seal and clean the surroundings of the location of any dirt or rust material. Attack a small quantity (2 to 3 drops) of clean engine oil around bore of the crankshaft rear oil seal housing, the outside diameter of the engine Flywheel pilot flange, the outside diameter of the Flywheel pilot flange, and the Crankshaft Seal surface. Examine the flange of the j 35621-b rear main seal installer (J 35621-B) for imperfections and remove minor ones with smooth grade emery cloth while ensuring that oil or lubricants do not get into the seal lip surface. Thereafter, take the sleeve from the crankshaft rear oil seal and lubricate it with a clean engine oil drop (2 to 3 drops) on its outer diameter. Put the crankshaft rear oil seal on the j 35621-b and put this on the rear of the crankshaft and tighten the tool bolt by hand until snug. Proper alignment is critical; keep the seal close to flush and square to the housing. Turn the j 35621-b wing nut until the seal is properly installed, experience stronger resistance when it comes to bottom of the housing bore. Unscrew the wing nut in the opposite direction, and take off the j 35621-b from the crankshaft. Remove any extra engine oil with the help of a clean rag before putting back the engine Flywheel, and the Transmission Assembly.

OEM Chevrolet Blazer Crankshaft Seal

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13 Crankshaft Seals found

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Chevrolet Blazer Rear Main Seal, Green Line Part Number: 12591866
$22.96 MSRP: $39.10
You Save: $16.14 (42%)
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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
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Chevrolet Blazer Rear Main Seal, Front Part Number: 14090906
$21.53 MSRP: $35.47
You Save: $13.94 (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
$43.95 MSRP: $68.84
You Save: $24.89 (37%)
Ships in 1-2 Business Days
ADD TO CART
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%)
Ships in 1-2 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:
- 2019-2021 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%)
Ships in 1-2 Business Days
ADD TO CART
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
ADD TO CART
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%)
Ships in 1-2 Business Days
ADD TO CART
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
$27.46 MSRP: $45.22
You Save: $17.76 (40%)
Ships in 1-2 Business Days
ADD TO CART
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
ADD TO CART
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
$35.70 MSRP: $61.29
You Save: $25.59 (42%)
Ships in 1-3 Business Days
ADD TO CART
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
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

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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 Questions & Experts Answers

Rear Main Seal
89018163
Q: How to replace the rear crankshaft seal on Chevrolet Blazer?
A:
To replace the crankshaft rear oil seal, you should first remove the Transmission Assembly and the engine Flywheel. Next, with a suitable tool, remove the crankshaft rear oil seal with care from the crankshaft rear oil seal housing, discard the old oil seal and clean the surroundings of the location of any dirt or rust material. Attack a small quantity (2 to 3 drops) of clean engine oil around bore of the crankshaft rear oil seal housing, the outside diameter of the engine Flywheel pilot flange, the outside diameter of the Flywheel pilot flange, and the Crankshaft Seal surface. Examine the flange of the j 35621-b rear main seal installer (J 35621-B) for imperfections and remove minor ones with smooth grade emery cloth while ensuring that oil or lubricants do not get into the seal lip surface. Thereafter, take the sleeve from the crankshaft rear oil seal and lubricate it with a clean engine oil drop (2 to 3 drops) on its outer diameter. Put the crankshaft rear oil seal on the j 35621-b and put this on the rear of the crankshaft and tighten the tool bolt by hand until snug. Proper alignment is critical; keep the seal close to flush and square to the housing. Turn the j 35621-b wing nut until the seal is properly installed, experience stronger resistance when it comes to bottom of the housing bore. Unscrew the wing nut in the opposite direction, and take off the j 35621-b from the crankshaft. Remove any extra engine oil with the help of a clean rag before putting back the engine Flywheel, and the Transmission Assembly.