Bosch Gen 4
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Not sure what motor you have? Click here: WHICH GENERATION IS MY BOSCH MOTOR?
Bearings
![](https://www.ebikemotorcentre.com/wp-content/uploads/2022/11/PLB40700-Gen-4-Crankshaft-bearing-kit.jpg)
Bosch Gen 4 Crankshaft bearing overhaul kit. Part No PLB40700
£66.83 inc VAT
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![Bosch Gen 4 Left-hand Crankshaft Bearing PLB40521](https://www.ebikemotorcentre.com/wp-content/uploads/2021/08/Bosch-4-PLB40521-Left-hand-crankshaft-bearing-1500-300x300.jpg)
Bosch Gen 4 left hand crankshaft bearing. Part No PLB40521
£22.00 inc VAT
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![Bosch Gen 4 Motor Drive Gear Bearing Case Side PLB40522](https://www.ebikemotorcentre.com/wp-content/uploads/2021/08/Bosch-4-PLB40522-Motor-drive-gear-support-bearing-case-side-1500-300x300.jpg)
Bosch Gen 4 motor drive gear support bearing case side. Part No PLB40522
£6.24 inc VAT
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![Bosch Gen 4 Motor Armature Support Bearing PLB40523](https://www.ebikemotorcentre.com/wp-content/uploads/2021/08/Bosch-4-PLB40523-Motor-armature-support-bearing-1500-300x300.jpg)
Bosch Gen 4 armature support bearing left. Part No PLB40523
£8.80 inc VAT
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![Bosch Gen 4 Gearbox Transfer Bearing Small PLB40524](https://www.ebikemotorcentre.com/wp-content/uploads/2021/08/Bosch-4-PLB40524-Gearbox-transfer-gear-bearing-small-1500-300x300.jpg)
Bosch Gen 4 drive gear bearing lower housing. Part No PLB40524
£5.08 inc VAT
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![Bosch Gen 4 Gear Shaft Needle Roller Bearing PLB40525](https://www.ebikemotorcentre.com/wp-content/uploads/2021/08/Bosch-4-PLB40525-Gear-shaft-needle-roller-bearing-1500-300x300.jpg)
Bosch Gen 4 Transfer gear shaft needle bearing, lower housing. PLB40525
£15.26 inc VAT
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![Bosch Gen 4 Gear Shaft Needle Roller Bearing PLB40526](https://www.ebikemotorcentre.com/wp-content/uploads/2021/08/Bosch-4-PLB40526-Gear-shaft-needle-roller-bearing-1500-300x300.jpg)
Bosch Gen 4 Gear shaft needle bearing lower housing. Part No PLB40526
£15.26 inc VAT
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![Bosch Gen 4 Drive Gear Support Bearing PLB40527](https://www.ebikemotorcentre.com/wp-content/uploads/2021/08/Bosch-4-PLB40527-drive-gear-support-bearing-for-right-hand--300x300.jpg)
Bosch Gen 4 drive gear support bearing for right hand motor cover. Part No PLB40527
£6.24 inc VAT
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![Bosch Gen 4 Sprag Clutch Bearing PLB40528](https://www.ebikemotorcentre.com/wp-content/uploads/2021/08/Bosch-4-PLB40528-Sprag-clutch-bearing-1500-300x300.jpg)
Bosch Gen 4 steel drive gear sprag bearing. Part No PLB40528
£55.42 inc VAT
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![Bosch Gen 4 Motor Overhaul Kit PLB40701](https://www.ebikemotorcentre.com/wp-content/uploads/2021/08/PLB40701-Gen-4-Motor-overhaul-kit-.jpg)
Bosch Gen 4 overhaul bearing kit. Part No PLB40701
£186.98 inc VAT
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![Bosch Gen 4 Right-hand Crankshaft Bearing PLB40520](https://www.ebikemotorcentre.com/wp-content/uploads/2021/08/Bosch-4-PLB40520-Right-hand-crankshaft-bearing-300x300.jpg)
Bosch Gen 4 right hand crankshaft bearing. Part No PLB40520
£19.20 inc VAT
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Service Parts
![](https://www.ebikemotorcentre.com/wp-content/uploads/2022/11/PLB40533-Gen-4-Sprocket-carrier-o-ring-external.jpg)
Bosch Gen 4 sprocket carrier o-ring external. Part No PLB40533
£1.37 inc VAT
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![](https://www.ebikemotorcentre.com/wp-content/uploads/2021/08/Bosch-Gen-4-Seal-kit-1-300x300.jpg)
Bosch Gen 4 Seal service kit. Part No PLA00923
£26.65 inc VAT
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![Bosch Gen 4 Lower Armature Bearing O-ring](https://www.ebikemotorcentre.com/wp-content/uploads/2021/08/Bosch-4-PLB40529-Lower-armature-bearing-support-o-ring-300x300.jpg)
Bosch Gen 4 lower armature bearing support O-ring. Part No PLB40529
£1.37 inc VAT
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![Bosch Gen 4 Sprocket Carrier O-rings](https://www.ebikemotorcentre.com/wp-content/uploads/2021/08/Bosch-4-PLB40530-Sprocket-carrier-o-ring-300x300.jpg)
Bosch Gen 4 sprocket carrier O-rings PLB40530
£1.37 inc VAT
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![Bosch Gen 4 O-ring Gear Shaft Small](https://www.ebikemotorcentre.com/wp-content/uploads/2021/08/Bosch-4-PLB40531-O-ring-gear-shaft-small-300x300.jpg)
Bosch Gen 4 O-ring gear shaft small. Part No PLB40531
£1.37 inc VAT
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![Bosch Gen 4 O-ring Lefthand Crankshaft](https://www.ebikemotorcentre.com/wp-content/uploads/2021/08/Bosch-4-PLB40532-O-ring-left-hand-crankshaft-300x300.jpg)
Bosch Gen 4 O-ring left hand crankshaft. Part No PLB40532
£1.37 inc VAT
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![](https://www.ebikemotorcentre.com/wp-content/uploads/2021/08/Bosch-Bearing-protection-grease-1500-1-300x300.jpg)
Bosch Gen 2, 3 & 4 bearing seal “tacky” grease
£10.00 inc VAT
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