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Crankshaft pulley: functions and failure symptoms

Table of content

  1. What does a crankshaft pulley do?
  2. What causes crankshaft pulley failure?
  3. Bad crankshaft pulley symptoms

Have you noticed a decline in engine performance or that the engine-powered components aren’t working as they should be? The root cause could actually be a bad crankshaft pulley, causing havoc to the belt drive. Keep reading to learn how to spot common crankshaft pulley symptoms and find out more about replacements.

What does a crankshaft pulley do?

If you aren’t an automotive expert, you may not know what a car crankshaft pulley is or what exactly it’s for, nevermind what the symptoms of failure are. So, let’s start from there.

If you have a petrol or diesel car, your engine generates and transfers power with the help of a camshaft and crankshaft. The camshaft is the mechanism that controls the opening and closing of the engine intake and exhaust valves, which is timed precisely for optimal combustion.

The crankshaft is responsible for transferring the energy generated by combustion in order to power the car by converting the vertical movement of the engine pistons into a rotational movement. To paint a clearer picture of its significance, the engine RPM is a measurement of the rotational speed of the crankshaft.

-19%
FEBI BILSTEIN 31782 Crankshaft pulley 6PK, Ø: 138mm, Number of ribs: 5, for crankshaft
Parts Details
  • Supplementary Article / Supplementary Info Info 2: for crankshaft
  • for OE number: V7 638 551 80
  • Thickness [mm]: 27
  • Diameter [mm]: 138
  • Weight [kg]: 1,04
  • Inner Diameter [mm]: 36
  • Number of ribs: 5
  • Material: Sheet Steel
  • Parameter: 6PK
  • FEBI BILSTEIN: Crankshaft pulley
  • Item number: 31782
  • Our price: £ 39,37
  • Condition: New
Details
FEBI BILSTEIN Crankshaft pulley 6PK, Ø: 138mm, Number of ribs: 5, for crankshaft
Article number: 31782
compared to RRP £ 48,99

£ 39,37
price incl. 20% VAT, excl. delivery costs
-29%
FEBI BILSTEIN 37420 Crankshaft pulley 6PK, Ø: 185mm, Number of ribs: 5, with bolts/screws, for crankshaft
Reviews - 17
Parts Details
  • Supplementary Article / Supplementary Info Info 2: with bolts / screws, for crankshaft
  • Inner Diameter 2 [mm]: 10, 45
  • Diameter [mm]: 185
  • Weight [kg]: 3,400
  • Number of ribs: 5
  • Material: Elastomer
  • Parameter: 6PK
  • FEBI BILSTEIN: Crankshaft pulley
  • Item number: 37420
  • Our price: £ 103,16
  • Condition: New
Details
FEBI BILSTEIN Crankshaft pulley 6PK, Ø: 185mm, Number of ribs: 5, with bolts/screws, for crankshaft
Article number: 37420
compared to RRP £ 145,99

£ 103,16
price incl. 20% VAT, excl. delivery costs
-56%
FEBI BILSTEIN 37419 Crankshaft pulley 6PK, Ø: 185mm, Number of ribs: 5, for crankshaft
Reviews - 8
Parts Details
  • Supplementary Article / Supplementary Info Info 2: for crankshaft
  • for OE number: 11 23 8 512 072
  • Diameter [mm]: 185
  • Weight [kg]: 3,34
  • Inner Diameter [mm]: 10, 45
  • Number of ribs: 5
  • Material: Elastomer
  • Parameter: 6PK
  • FEBI BILSTEIN: Crankshaft pulley
  • Item number: 37419
  • Our price: £ 101,45
  • Condition: New
Details
FEBI BILSTEIN Crankshaft pulley 6PK, Ø: 185mm, Number of ribs: 5, for crankshaft
Article number: 37419
compared to RRP £ 233,99

£ 101,45
price incl. 20% VAT, excl. delivery costs
-54%
111 143 001 TOPRAN 111 143 Crankshaft pulley Decoupled
Reviews - 5
Parts Details
  • Supplementary Article / Supplementary Info Info 2: Decoupled
  • Vibration: without vibration damper
  • Pulleys: Belt Pulley
  • Material: Steel
  • TOPRAN: Crankshaft pulley
  • Item number: 111 143
  • Our price: £ 8,47
  • Condition: New
Details
TOPRAN Crankshaft pulley Decoupled
Article number: 111 143
compared to RRP £ 18,65

£ 8,47
price incl. 20% VAT, excl. delivery costs
-38%
FEBI BILSTEIN 175188 Crankshaft pulley 6PK, Ø: 157mm, with bolts/screws
Reviews - 4
Parts Details
  • Supplementary Article / Supplementary Info Info 2: with bolts / screws
  • Diameter [mm]: 157
  • Width [mm]: 57,5
  • Weight [kg]: 2,549
  • Inner Diameter [mm]: 38,9
  • Parameter: 6PK
  • FEBI BILSTEIN: Crankshaft pulley
  • Item number: 175188
  • Our price: £ 118,32
  • Condition: New
Details
FEBI BILSTEIN Crankshaft pulley 6PK, Ø: 157mm, with bolts/screws
Article number: 175188
compared to RRP £ 190,99

£ 118,32
price incl. 20% VAT, excl. delivery costs

Crankshaft pulleys, aka harmonic balancers, are located on the end of the “crank” and are designed to distribute this rotational power through the pulley system to turn the car's drive belt. As the belt turns, power is transferred to the engine accessories, including the alternator, AC compressor, water pump, and power steering pump.

In addition to this, it acts as a balancer, balancing out the rotating crankshaft and dampening engine vibrations to ensure that everything operates smoothly.

Crankshaft pulley symptoms

What causes crankshaft pulley failure?

There are several possible causes of a failed crankshaft pulley, including the following:

  • Improper installation
  • Excessive belt tension
  • Wear and tear
  • Bearing failure
  • Exposure to extremely high temperatures, coolant, or oil

It’s advisable to get a proper diagnosis as soon as you detect a problem with the pulley system. Replacing the components themselves can cost anywhere between £30 and £490 plus labour charges, depending on the vehicle make and model, as well as the year of manufacture. If the crankshaft itself is damaged, things start to get a bit more expensive with online crankshaft prices typically ranging between £95 and £1600.

-33%
FEBI BILSTEIN 33077 Crankshaft pulley 6PK, Ø: 180mm, Number of ribs: 5, with bolts/screws, for crankshaft, BMTS Turbo NEW
Reviews - 21
Parts Details
  • Supplementary Article / Supplementary Info Info 2: with bolts / screws, for crankshaft
  • Diameter [mm]: 180
  • Weight [kg]: 3,51
  • Number of ribs: 5
  • Parameter: 6PK
  • Supplementary Info: BMTS Turbo NEW
  • FEBI BILSTEIN: Crankshaft pulley
  • Item number: 33077
  • Our price: £ 154,24
  • Condition: New
Details
FEBI BILSTEIN Crankshaft pulley 6PK, Ø: 180mm, Number of ribs: 5, with bolts/screws, for crankshaft, BMTS Turbo NEW
Article number: 33077
compared to RRP £ 231,99

£ 154,24
price incl. 20% VAT, free delivery
7845-10133 GATES TVD1133 Crankshaft pulley Ø: 190mm, without accessories, PowerGrip™
Reviews - 13
Parts Details
  • Number of ribs 2 0
  • Supplementary Article / Supplementary Info: without accessories
  • Number of grooves: 6
  • Diameter [mm]: 190
  • Width [mm]: 28
  • Inner Diameter [mm]: 24
  • Supplementary Info: PowerGrip™
  • GATES: Crankshaft pulley
  • Item number: TVD1133
  • Our price: £ 147,91
  • Condition: New
Details
GATES Crankshaft pulley Ø: 190mm, without accessories, PowerGrip™
Article number: TVD1133
£ 147,91
price incl. 20% VAT, free delivery
CORTECO 80000374 Crankshaft pulley 4PK+6PK, Ø: 192mm, Number of ribs: 3, 5, Decoupled, with mounting manual
Reviews - 22
Parts Details
  • Supplementary Article / Supplementary Info Info 2: Decoupled, with mounting manual
  • See accessories list for additionally required parts
  • Diameter [mm]: 192
  • Weight [kg]: 2,68
  • Number of ribs: 3, 5
  • Vehicle Equipment: for vehicles with start-stop function, for vehicles without start-stop function
  • Parameter: 4PK+6PK
  • CORTECO: Crankshaft pulley
  • Item number: 80000374
  • Our price: £ 155,01
  • Condition: New
Details
CORTECO Crankshaft pulley 4PK+6PK, Ø: 192mm, Number of ribs: 3, 5, Decoupled, with mounting manual
Article number: 80000374
£ 155,01
price incl. 20% VAT, free delivery
-31%
FEBI BILSTEIN 27215 Crankshaft pulley 6PK, Ø: 180mm, Number of ribs: 5, for crankshaft
Reviews - 4
Parts Details
  • Supplementary Article / Supplementary Info Info 2: for crankshaft
  • Thickness [mm]: 35
  • Diameter [mm]: 180
  • Weight [kg]: 2,06
  • Inner Diameter [mm]: 35
  • Number of ribs: 5
  • Parameter: 6PK
  • FEBI BILSTEIN: Crankshaft pulley
  • Item number: 27215
  • Our price: £ 87,74
  • Condition: New
Details
FEBI BILSTEIN Crankshaft pulley 6PK, Ø: 180mm, Number of ribs: 5, for crankshaft
Article number: 27215
compared to RRP £ 127,99

£ 87,74
price incl. 20% VAT, excl. delivery costs
-54%
FEBI BILSTEIN 33566 Crankshaft pulley 6PK, Ø: 161mm, Number of ribs: 5, with bolts/screws, BMTS Turbo NEW
Parts Details
  • Supplementary Article / Supplementary Info Info 2: with bolts / screws
  • for OE number: 028 105 243 T S2
  • Diameter [mm]: 161
  • Width [mm]: 32
  • Weight [kg]: 1,822
  • Inner Diameter [mm]: 30
  • Number of ribs: 5
  • Parameter: 6PK
  • Supplementary Info: BMTS Turbo NEW
  • FEBI BILSTEIN: Crankshaft pulley
  • Item number: 33566
  • Our price: £ 57,47
  • Condition: New
Details
FEBI BILSTEIN Crankshaft pulley 6PK, Ø: 161mm, Number of ribs: 5, with bolts/screws, BMTS Turbo NEW
Article number: 33566
compared to RRP £ 124,99

£ 57,47
price incl. 20% VAT, excl. delivery costs

Bad crankshaft pulley symptoms

  • Excessive engine vibrations – When the part fails, it may no longer be able to counteract vibrations coming from the rotating mechanism.
  • Abnormal squealing sounds – You may hear abnormal crankshaft pulley noises as a result of a loss of tension or misalignment.
  • Drive belt damage or misalignment – This can occur as a result of the excessive vibration and deformation or damage to the pulley, causing it to change the position of the belt.
  • AC failure – The compressor is unlikely to function properly if the belt drive or pulley system goes down.
  • A stiff steering wheel – If the drive belt gets damaged as a result of a bad pulley, the power steering pump may not be receiving enough power, making it more difficult to turn the wheels.
  • An illuminated battery light – If the alternator is not being driven by the belt, it will not be able to maintain the car battery’s charge effectively. The battery will therefore lose its charge within a shorter period of time

If you’re hoping to save money by replacing the damaged parts yourself, you can find the best deals on aftermarket parts online. You can also compare parts and check whether they are compatible with your vehicle. Simply enter relevant details, such as the vehicle make and model and part name (e.g., “Crankshaft pulley BMW 1 Series”), or enter specific data, such as the VIN or OE part number.

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AUTODOC Bestsellers: parts at a good price

INA 544 0130 10 Crankshaft pulley Ø: 168mm
Reviews - 24
Parts Details
  • Vibration: with vibration damper
  • Number of grooves: 6
  • Diameter [mm]: 168
  • Width [mm]: 77
  • INA: Crankshaft pulley
  • Item number: 544 0130 10
  • Our price: £ 102,48
  • Condition: New
Details
INA Crankshaft pulley Ø: 168mm
Article number: 544 0130 10
£ 102,48
price incl. 20% VAT, excl. delivery costs
FEBEST MDS-2800DT Crankshaft pulley
Parts Details
  • Packaging width [cm]: 17,5
  • Packaging length [cm]: 17,5
  • Packaging height [cm]: 6,4
  • Weight [kg]: 3,07
  • FEBEST: Crankshaft pulley
  • Item number: MDS-2800DT
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FEBEST Crankshaft pulley
Article number: MDS-2800DT
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FEBI BILSTEIN 27824 Crankshaft pulley 6PK, Ø: 165mm, Number of ribs: 5, for crankshaft
Reviews - 1
Parts Details
  • Supplementary Article / Supplementary Info Info 2: for crankshaft
  • Thickness [mm]: 30
  • Diameter [mm]: 165
  • Weight [kg]: 1,370
  • Inner Diameter [mm]: 35
  • Number of ribs: 5
  • Parameter: 6PK
  • FEBI BILSTEIN: Crankshaft pulley
  • Item number: 27824
  • Our price: £ 29,01
  • Condition: New
Details
FEBI BILSTEIN Crankshaft pulley 6PK, Ø: 165mm, Number of ribs: 5, for crankshaft
Article number: 27824
compared to RRP £ 32,99

£ 29,01
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FEBI BILSTEIN 171097 Crankshaft pulley 7PK, Ø: 153mm, Number of ribs: 6, for crankshaft
Reviews - 1
Parts Details
  • Supplementary Article / Supplementary Info Info 2: for crankshaft
  • for OE number: 642 030 04 03
  • Diameter [mm]: 153
  • Width [mm]: 73
  • Weight [kg]: 2,655
  • Inner Diameter [mm]: 32
  • Number of ribs: 6
  • Parameter: 7PK
  • FEBI BILSTEIN: Crankshaft pulley
  • Item number: 171097
  • Our price: £ 106,34
  • Condition: New
Details
FEBI BILSTEIN Crankshaft pulley 7PK, Ø: 153mm, Number of ribs: 6, for crankshaft
Article number: 171097
compared to RRP £ 135,99

£ 106,34
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FEBI BILSTEIN 33798 Crankshaft pulley 6PK, Ø: 158mm, Number of ribs: 5, with screw, for crankshaft, BMTS Turbo NEW
Reviews - 8
Parts Details
  • Supplementary Article / Supplementary Info Info 2: with screw, for crankshaft
  • Diameter [mm]: 158
  • Width [mm]: 30
  • Weight [kg]: 1,72
  • Inner Diameter [mm]: 30
  • Number of ribs: 5
  • Parameter: 6PK
  • Supplementary Info: BMTS Turbo NEW
  • FEBI BILSTEIN: Crankshaft pulley
  • Item number: 33798
  • Our price: £ 33,02
  • Condition: New
Details
FEBI BILSTEIN Crankshaft pulley 6PK, Ø: 158mm, Number of ribs: 5, with screw, for crankshaft, BMTS Turbo NEW
Article number: 33798
compared to RRP £ 55,99

£ 33,02
price incl. 20% VAT, excl. delivery costs
-31%
FEBI BILSTEIN 33788 Crankshaft pulley 6PK, Ø: 153mm, Number of ribs: 5, with bolts/screws, for crankshaft, BMTS Turbo NEW
Reviews - 1
Parts Details
  • Supplementary Article / Supplementary Info Info 2: with bolts / screws, for crankshaft
  • Diameter [mm]: 153
  • Width [mm]: 25,5
  • Weight [kg]: 1,36
  • Inner Diameter [mm]: 36
  • Number of ribs: 5
  • Parameter: 6PK
  • Supplementary Info: BMTS Turbo NEW
  • FEBI BILSTEIN: Crankshaft pulley
  • Item number: 33788
  • Our price: £ 36,51
  • Condition: New
Details
FEBI BILSTEIN Crankshaft pulley 6PK, Ø: 153mm, Number of ribs: 5, with bolts/screws, for crankshaft, BMTS Turbo NEW
Article number: 33788
compared to RRP £ 52,99

£ 36,51
price incl. 20% VAT, excl. delivery costs
INA 544 0029 10 Crankshaft pulley Ø: 162mm
Reviews - 2
Parts Details
  • Vibration: with vibration damper
  • Number of grooves: 6
  • Diameter [mm]: 162
  • Width [mm]: 30
  • INA: Crankshaft pulley
  • Item number: 544 0029 10
  • Our price: £ 30,37
  • Condition: New
Details
INA Crankshaft pulley Ø: 162mm
Article number: 544 0029 10
£ 30,37
price incl. 20% VAT, excl. delivery costs
INA 544 0137 20 Belt Pulley Set, crankshaft Ø: 167,50 mm
Reviews - 3
Parts Details
  • Diameter [mm]: 167,50
  • Width [mm]: 77,00
  • Number of grooves: 6
  • Vibration: with vibration damper
  • INA: Belt Pulley Set, crankshaft
  • Item number: 544 0137 20
  • Our price: £ 104,48
  • Condition: New
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INA Belt Pulley Set, crankshaft Ø: 167,50 mm
Article number: 544 0137 20
£ 104,48
price incl. 20% VAT, excl. delivery costs
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FEBI BILSTEIN 33617 Crankshaft pulley 6PK, Ø: 138mm, Number of ribs: 5, with bolts/screws, BMTS Turbo NEW
Reviews - 1
Parts Details
  • Supplementary Article / Supplementary Info Info 2: with bolts / screws
  • for OE number: V7 638 551 80 S1
  • Thickness [mm]: 27
  • Diameter [mm]: 138
  • Weight [kg]: 1,067
  • Inner Diameter [mm]: 36
  • Number of ribs: 5
  • Parameter: 6PK
  • Supplementary Info: BMTS Turbo NEW
  • FEBI BILSTEIN: Crankshaft pulley
  • Item number: 33617
  • Our price: £ 40,08
  • Condition: New
Details
FEBI BILSTEIN Crankshaft pulley 6PK, Ø: 138mm, Number of ribs: 5, with bolts/screws, BMTS Turbo NEW
Article number: 33617
compared to RRP £ 55,99

£ 40,08
price incl. 20% VAT, excl. delivery costs
FEBEST HDS-K20A Crankshaft pulley
Parts Details
  • Packaging width [cm]: 16,0
  • Packaging length [cm]: 16,0
  • Packaging height [cm]: 4,8
  • Number of grooves: 7
  • Weight [kg]: 2,158
  • FEBEST: Crankshaft pulley
  • Item number: HDS-K20A
  • Our price: £ 59,16
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Details
FEBEST Crankshaft pulley
Article number: HDS-K20A
£ 59,16
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