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Front Differential Input Seal Kit

The seal and both dust covers needed to re-seal your vehicles input shaft on the front differential.
Mfg Part #
31521428678SKT
ECS Part #
ES#3604681
Brand
Assembled By ECS
40.86
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on orders $49 and up
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Product Details

Are you replacing your front driveshaft? Maybe you're simply preparing to do a fluid flush. Either way now is the perfect time to replace that input shaft seal. 

After years of being in the elements, the rubber in these seals begins to degrade over time, leading to shrinking and cracking. Leaking fluid is an obvious side effect, but what could be even worse is the damage that is done by allowing particles to enter the differential. Since the seal is no longer tight, small particulate and dirt particles are free to find their way inside by sneaking by the input shaft of even worse, scoring and damaging the metal of the shaft in the process. 

This is a simple replacement that prevents future headaches and eye-watering replacement bills. For reference, a replacement front differential costs upwards of 2000.00USD. Get in front of this PM before it comes back to haunt you in the future!

Kit Includes:

1 Differential input seal: 31521428678
1 Large dust cover plate: 31511428659
1 Small dust cover plate: 31520019369
1 Safety plate

This Part Fits the Following Vehicles

Make Model Submodel Engine
BMW E46 325xi M54 2.5L
BMW E46 330xi M54 3.0L
BMW E53 X5 M54 3.0L
BMW E53 X5 M62 4.4L
BMW E53 X5 M62 4.6L
BMW E53 X5 N62 4.4L
BMW E53 X5 N62 4.8L
BMW E60 525xi N52 3.0L
BMW E60 528xi N52 3.0L
BMW E60 530xi N52 3.0L
BMW E60 535xi N54 3.0L
BMW E61 530xi N52 3.0L
BMW E61 535xi N54 3.0L
BMW E70 X5 M57 3.0L
BMW E70 X5 N52 3.0L
BMW E70 X5 N55 3.0L
BMW E70 X5 N62 4.8L
BMW E70 X5 S63 4.4L
BMW E70 X5 M S63 4.4L
BMW E70 X5 xDrive30i N52 3.0L
BMW E70 X5 xDrive35d M57 3.0L
BMW E70 X5 xDrive35i N55 3.0L
BMW E70 X5 xDrive48i N62 4.8L
BMW E70 X5 xDrive50i N63 4.4L
BMW E71 X6 S63 4.4L
BMW E71 X6 35iX N54 3.0L
BMW E71 X6 50iX N63 4.4L
BMW E71 X6 50iX S63 4.4L
BMW E71 X6 ActiveHybrid N63 4.4L
BMW E71 X6 M S63 4.4L
BMW E71 X6 xDrive35i N54 3.0L
BMW E71 X6 xDrive35i N55 3.0L
BMW E71 X6 xDrive50i N63 4.4L
BMW E83 X3 M54 2.5L
BMW E83 X3 M54 3.0L
BMW E83 X3 N52 3.0L
BMW E84 X1 xDrive28i N20 2.0L
BMW E84 X1 xDrive35i N55 3.0L
BMW E90 325xi N52 3.0L
BMW E90 328xi N52 3.0L
BMW E90 330xi N52 3.0L
BMW E90 335xi N54 3.0L
BMW E90 335xi N55 3.0L
BMW E91 325xi N52 3.0L
BMW E91 328xi N52 3.0L
BMW E92 328xi N52 3.0L
BMW E92 335xi N54 3.0L
BMW E92 335xi N55 3.0L
BMW F01 750i xDrive N63 4.4L
BMW F02 740Ld xDrive N57 3.0L
BMW F02 740Li xDrive N55 3.0L
BMW F02 750Li xDrive N63 4.4L
BMW F02 750LiX All
BMW F06 640i xDrive N55 3.0L
BMW F06 650i xDrive N63 4.4L
BMW F06 Alpina B6 xDrive N63 4.4L
BMW F07 535i xDrive N55 3.0L
BMW F07 550i xDrive N63 4.4L
BMW F10 528i xDrive N20 2.0L
BMW F10 535d xDrive N57 3.0L
BMW F10 535i xDrive N55 3.0L
BMW F10 550i xDrive N63 4.4L
BMW F12 640i xDrive N55 3.0L
BMW F12 650iX N63 4.4L
BMW F13 640i xDrive N55 3.0L
BMW F13 650iX N63 4.4L
BMW F22 228i xDrive N20 2.0L
BMW F22 230i xDrive B46 2.0L
BMW F22 M235i xDrive N55 3.0L
BMW F22 M240i xDrive B58 3.0L
BMW F23 228i xDrive N20 2.0L
BMW F23 230i xDrive B46 2.0L
BMW F23 M235i xDrive N55 3.0L
BMW F23 M240i xDrive B58 3.0L
BMW F26 X4 M40iX N55 3.0L
BMW F26 X4 xDrive28i N20 2.0L
BMW F26 X4 xDrive35i N55 3.0L
BMW F30 320i xDrive N20 2.0L
BMW F30 328d xDrive N47 2.0L
BMW F30 328i xDrive N20 2.0L
BMW F30 330i xDrive B48 2.0L
BMW F30 335i xDrive N55 3.0L
BMW F30 340i xDrive B58 3.0L
BMW F31 328d xDrive N47 2.0L
BMW F31 328i N20 2.0L
BMW F31 328i xDrive N20 2.0L
BMW F31 330i B48 2.0L
BMW F32 428i xDrive N20 2.0L
BMW F32 430i xDrive B46 2.0L
BMW F32 435i xDrive N55 3.0L
BMW F32 440i xDrive B58 3.0L
BMW F33 428i xDrive N20 2.0L
BMW F33 430i xDrive B46 2.0L
BMW F33 435i xDrive N55 3.0L
BMW F33 440i xDrive B58 3.0L
BMW F34 328i N20 2.0L
BMW F34 328i xDrive N20 2.0L
BMW F34 330i xDrive B46 2.0L
BMW F34 335i xDrive N55 3.0L
BMW F34 340i xDrive B58 3.0L
BMW F85 X5 M S63 4.4L
BMW G11 750i xDrive N63 4.4L
*The above product applications have been written by ECS Tuning. All warranties, product application, fitment, and performance are the responsibility of ECS Tuning. For additional information see the terms of use.

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