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Crankshaft oil seal: useful information

How to detect the crankshaft oil seal failure

To inspect the part condition on your own, examine the place where the crankshaft comes out of the cylinder block. It must be dry and clean. If there are traces of oil on it, then the crankshaft oil seal has failed. Sometimes also faults in the crankshaft ventilation system can cause oil leakage, so it is advisable to inspect it too.

You may identify that the crankshaft oil seal needs diagnosis by the following symptoms:

  • Traces of oil leakage in the engine compartment. In some cases a puddle of lubricant  can also be seen on the ground under a parked vehicle.
  • Increased oil consumption.

Causes of the crankshaft oil seal faults

Delayed replacement of oil filter and oil shortens the part service life. This results from the fact that when oil is used for a long time, abrasive particles of dust and dirt accumulate in the place of the seal installation and scratch the crankshaft gasket.

Engine overheating shortens the oil seal useful life as well. When the engine overheats, the  crankshaft temperature becomes higher than that for which the seal is intended. As a result, it warps and loses its ability to ensure tightness.

If the car was out of use for a prolonged time, the oil seal may dry out. If you leave the car in the cold season outdoors, the gasket can freeze up and harden. In both cases, the component will not fit tightly to the crankshaft and will not be able to fulfil its function.

Repair and replacement of the crankshaft oil seal

In the case of failure, the oil seal requires replacement. This is a rather complex procedure, so it is usually performed at a service station. However, if you have appropriate skills, you can replace the seal on your own. For preventive purposes, it is advised to replace the front and rear seals at the same time. Before replacing you have to put the car on a pit and provide its immobility. For replacing the front oil seal, you have to:

  1. Dismantle the cover from the timing belt, then demount the belt itself.
  2. Disconnect the driving toothed pulley of the crankshaft.
  3. Carefully pry up the old oil seal and remove it, clean the mounting spot and install a new part.
  4. Reassemble in reverse order.

For the rear seal replacement, you need to:

  1. Dismantle the gearbox.
  2. Remove the bolts that fasten the flywheel to the engine.
  3. Remove the locking plate and the flywheel.
  4. Remove the clutch backplate, unscrew fasteners of the rear engine cover on which  the crankshaft oil seal is mounted.
  5. Take out the old part, clean the mounting spot and press in a new part in its place.
  6. Reassemble in reverse order.

Replacement of crankshaft oil seals involves the necessity to first remove many units and assemblies. If you have little experience in servicing the vehicle, it's best to contact a service station for replacement.

Crankshaft Seal: High quality bestseller

REINZ 81-34366-00 replacement Parts Details
  • Inner Diameter [mm]: 35
  • Material: PTFE (polytetrafluoroethylene), ACM (Polyacrylate)
  • Swirl Type: Right-hand Twist
  • Radial Shaft Seal Design: A SL
  • Supplementary Article / Supplementary Info Info 2: with mounting sleeve
  • Height [mm]: 10
  • Diameter [mm]: 48
  • Condition: New
In stock
Details
original REINZ 81-34366-00 Crankshaft Seal online buy
Crankshaft seal REINZ 81-34366-00
Article №: 81-34366-00
£ 11,48
incl. 20% VAT, excl. delivery costs
REINZ 81-19299-10 replacement Parts Details
  • Inner Diameter [mm]: 32
  • Material: FPM (fluoride rubber)
  • Swirl Type: Alternating Twist
  • Radial Shaft Seal Design: A SL
  • Height [mm]: 10
  • Diameter [mm]: 47
  • Condition: New
In stock
Details
original REINZ 81-19299-10 Crankshaft oil seal online buy
Crankshaft seal REINZ 81-19299-10
Article №: 81-19299-10
£ 3,24
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REINZ 81-23708-40 replacement Parts Details
  • Inner Diameter [mm]: 85
  • Material: FPM (fluoride rubber)
  • Swirl Type: Left-hand Twist
  • Radial Shaft Seal Design: A SL
  • Height 1 [mm]: 9
  • Height [mm]: 11
  • Diameter [mm]: 105
  • Condition: New
In stock
Details
original REINZ 81-23708-40 Crank oil seal online buy
Crankshaft seal REINZ 81-23708-40
Article №: 81-23708-40
£ 10,24
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CORTECO 12012709B replacement Parts Details
  • Fitting Position: frontal sided
  • Material: FPM (fluoride rubber)
  • Swirl Type: Alternating Twist
  • Dust Cover: with dust lip
  • Height 1 [mm]: 10
  • for OE number: 026103085D
  • Inner Diameter 2 [mm]: 32
  • Diameter [mm]: 47
  • Condition: New
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CORTECO 12012709B Crankshaft gasket cheap in original quality
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Article №: 12012709B
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ELRING 746.400 replacement Parts Details
  • Inner Diameter [mm]: 93
  • Material: PTFE (polytetrafluoroethylene)
  • Swirl Type: Left-hand Twist
  • Radial Shaft Seal Design: SP
  • Housing Type: with housing
  • Goods tariff number: 8409999990
  • Condition: New
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ELRING 746.400 Shaft seal crankshaft cheap in original quality
Crankshaft seal ELRING 746.400
Article №: 746.400
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ELRING 430.190 replacement Parts Details
  • Inner Diameter [mm]: 85
  • Material: PTFE (polytetrafluoroethylene)
  • Swirl Type: Left-hand Twist
  • Radial Shaft Seal Design: IWD
  • Supplementary Article / Supplementary Info Info 2: with mounting sleeve
  • Housing Type: with housing
  • Article number of the recommended special tool: VW T10134
  • Observe mounting information
  • Goods tariff number: 8409999990
  • Condition: New
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ELRING 430.190 Crankshaft Seal cheap in original quality
Crankshaft seal ELRING 430.190
Article №: 430.190
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ELRING 012.370 replacement Parts Details
  • Inner Diameter [mm]: 85
  • Material: PTFE (polytetrafluoroethylene)/ACM (polyacrylate rubber)
  • Swirl Type: Left-hand Twist
  • Radial Shaft Seal Design: IWD
  • Supplementary Article / Supplementary Info Info 2: with mounting sleeve
  • Housing Type: with housing
  • Goods tariff number: 8409919990
  • Condition: New
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original ELRING 012.370 Crankshaft oil seal
Crankshaft seal ELRING 012.370
Article №: 012.370
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CORTECO 19036539B replacement Parts Details
  • Fitting Position: transmission sided
  • Material: PTFE (polytetrafluoroethylene)/ACM (polyacrylate rubber)
  • Height 1 [mm]: 15,5
  • Supplementary Article / Supplementary Info Info 2: with mounting sleeves, with flange
  • Outer Diameter 2 [mm]: 205
  • for OE number: 0514C4
  • Inner Diameter 2 [mm]: 106
  • Diameter [mm]: 195
  • Condition: New
In stock
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original CORTECO 19036539B Crank oil seal
Crankshaft seal CORTECO 19036539B
Article №: 19036539B
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ELRING 026.750 replacement Parts Details
  • Inner Diameter [mm]: 40
  • Material: PTFE (polytetrafluoroethylene)/FPM (fluoro rubber)
  • Swirl Type: Right-hand Twist
  • Radial Shaft Seal Design: ASW
  • Dust Cover: with dust lip
  • Height [mm]: 6,4
  • Observe mounting information
  • Diameter [mm]: 55
  • Goods tariff number: 8484200000
  • Condition: New
In stock
Details
original ELRING 026.750 Crankshaft gasket
Crankshaft seal ELRING 026.750
Article №: 026.750
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ELRING 301.870 replacement Parts Details
  • Inner Diameter [mm]: 90
  • Material: PTFE (polytetrafluoroethylene)/FPM (fluoro rubber)
  • Swirl Type: Left-hand Twist
  • Radial Shaft Seal Design: A/BS
  • Dust Cover: with dust lip
  • Supplementary Article / Supplementary Info Info 2: with mounting sleeve
  • Height [mm]: 12
  • Observe mounting information
  • Diameter [mm]: 110
  • Goods tariff number: 8484200000
  • Condition: New
In stock
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ELRING 301.870 Shaft seal crankshaft for your car
Crankshaft seal ELRING 301.870
Article №: 301.870
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ELRING 342.093 replacement Parts Details
  • Inner Diameter [mm]: 85
  • Material: FPM (fluoride rubber)
  • Swirl Type: Left-hand Twist
  • Radial Shaft Seal Design: ASW
  • Dust Cover: with dust lip
  • Height [mm]: 11
  • Alternative Repair Kit: 829.056
  • Diameter [mm]: 105
  • Goods tariff number: 8484200000
  • Condition: New
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ELRING 342.093 Crankshaft Seal for your car
Crankshaft seal ELRING 342.093
Article №: 342.093
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ELRING 475.961 replacement Parts Details
  • Inner Diameter [mm]: 35
  • Material: FPM (fluoride rubber)
  • Swirl Type: Right-hand Twist
  • Radial Shaft Seal Design: ASW
  • Dust Cover: with dust lip
  • Height [mm]: 10
  • Diameter [mm]: 48
  • Goods tariff number: 8484200000
  • Condition: New
In stock
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ELRING 475.961 Crankshaft oil seal for your car
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VAICO V10-3275 replacement Parts Details
  • Supplementary Info: Q+, original equipment manufacturer quality
  • Inner Diameter [mm]: 35
  • Fitting Position: frontal sided
  • Thickness [mm]: 10
  • Weight [kg]: 0,031
  • for OE number: 03G 105 021 C
  • Diameter [mm]: 48
  • Packaging width [cm]: 4,3
  • Packaging height [cm]: 7,3
  • Packaging Depth [cm]: 7,2
  • Condition: New
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Article №: V10-3275
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TOPRAN 302 171 replacement Parts Details
  • Inner Diameter [mm]: 40
  • Fitting Position: frontal sided
  • Material: PTFE (polytetrafluoroethylene)/ACM (polyacrylate rubber)
  • Swirl Type: Right-hand Twist
  • Dust Cover: with dust lip
  • Height [mm]: 6,4
  • Rotation Direction: Clockwise rotation
  • Diameter [mm]: 55
  • Condition: New
In stock
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Crankshaft seal TOPRAN 302171
Article №: 302 171
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REINZ 81-90010-00 replacement Parts Details
  • Material: PTFE (polytetrafluoroethylene)
  • Supplementary Article / Supplementary Info Info 2: with carrier frame
  • Condition: New
In stock
Details
Shaft seal crankshaft 81-90010-00 - £ 27,48
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Article №: 81-90010-00
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REINZ 81-53236-00 replacement Parts Details
  • Inner Diameter [mm]: 32
  • Material: MVQ (silicone rubber)
  • Swirl Type: Right-hand Twist
  • Radial Shaft Seal Design: A SL
  • Height [mm]: 6
  • Diameter [mm]: 47
  • Condition: New
In stock
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Crankshaft Seal 81-53236-00 - £ 1,96
Crankshaft seal REINZ 81-53236-00
Article №: 81-53236-00
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REINZ 81-35554-00 replacement Parts Details
  • Inner Diameter [mm]: 40
  • Material: PTFE (polytetrafluoroethylene), ACM (Polyacrylate)
  • Swirl Type: Right-hand Twist
  • Radial Shaft Seal Design: A SL
  • Height [mm]: 6,4
  • Diameter [mm]: 55
  • Condition: New
In stock
Details
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Article №: 81-35554-00
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incl. 20% VAT, excl. delivery costs
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  • Fitting Position: frontal sided
  • Material: FPM (fluoride rubber)/ACM (polyacrylate rubber)
  • Swirl Type: Right-hand Twist
  • Dust Cover: with dust lip
  • Height 1 [mm]: 7
  • for OE number: 032612
  • Inner Diameter 2 [mm]: 42
  • Diameter [mm]: 62
  • Condition: New
In stock
Details
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Article №: 20015456B
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