Timken® - Rear Differential Seal

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1987 BMW 6-Series
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Product Details

BMW 635CSi / M6 1987, Rear Differential Seal by Timken®. Timken offers the right seal to keep your vehicle running optimally. Timken seals provide ultimate protection from contaminants and help retain lubricants and liquids, ensuring reliable vehicle operation and contributing to extending the service life of the part they protect.


  • Machined rubber sealing edge provides greater accuracy and consistency and a better sealing surface
  • An extra dust lip helps keep harmful contaminants out and protects against rust and corrosion
  • A latex bore coat seals the outer diameter leak path and helps compensate for minor bore imperfections
  • A flanged design allows for easier installation and helps avoid cocking

The basic functions of seals include retaining lubricants and liquids, eliminating contaminants, and sealing or separating dissimilar fluids or gases. By retaining lubricant and excluding contaminants, seals ensure longer bearing life and prevent premature failure of the bearing or other component protected. Timken understands how important seals are for smooth and dependable vehicle operation and devotes great attention to design attributes and the quality of materials used to manufacture each and every seal. Timken seals are designed to allow for maximum durability even under less than perfect operating conditions. As a result, Timken seals provide efficient protection against residual and airborne contaminants, thus contributing to long service life and preventing premature damage of a protected part.

Timken®, a global industrial technology leader, was established in 1899 and grew from a family-owned business into an international company with more than 60 manufacturing plants located in 30 countries on six continents. This brand stands at the forefront of many industries, including automotive, aerospace, power generation, health, metallurgy, and more. Timken’s history is a story of growth through innovation, which traces back to the time when the company's founder Henry Timken invented and patented the tapered roller bearing. Nowadays, bold innovation remains a guiding value of the company. Timken's technologies include patented, top-quality designs for a variety of automotive applications.

Part Number:


Timken Alcor Aerospace Technologies, Inc. and Bearing Inspection, Inc., collectively known as Timken Aerospace Aftermarket Solutions (“TAS”), provide the following limited warranties to customers for manufactured parts and for engine, component, part overhaul. FAA-PMA replacement parts (“PMA Parts”) will be free from defects in materials and workmanship, as defined by TAS standards, and will conform to the descriptions provided in writing by TAS for a period of 12 months,1000 hours, or the cycle limit of the part as defined by the applicable engine operations and maintenance manual, whichever occurs first, from the date of installation (“warranty period”).

The warranty period shall commence no later than twelve (12) months from the date of delivery of the part to the customer. In no event, however, shall PMA parts with a specified shelf life shall be warranted for any period of time longer than the shelf life. The warranty period for parts for Rolls-Royce 250 series and T56 series engines shall be twenty four (24) months, subject to the same limitations stated herein. Repair services shall be performed in a workmanlike manner and repairs shall be free from defect in workmanship, as determined by TAS standards of repair, under normal operating conditions for a period of twelve (12) months from the date of shipment or 6 months from the date of first installation or 500 flight hours, whichever comes first (“repair service warranty”). Overhauled and repaired parts (“repaired parts”) will be free from defects in materials and workmanship, as defined by TAS standards, for a period of twelve (12) months from the date of shipment or six (6) months from the date of installation or 500 flight hours whichever comes first (“repair part warranty”). Vane casting replacement repaired parts (“vane casting replacements”) will have the same warranty as PMA parts (“vane casting replacement repair warranty”). Bearings overhauled will be free from defects in material and workmanship, as defined by TAS overhaul standards, for a period of one (1) year from the date of delivery to the customer.

The limited warranties are void under the following conditions: parts or components must have been installed by a facility approved to perform repair/overhaul of the engine or drivetrain. The installer must have current manufacturer manuals and must have properly trained personnel performing the installations. Installation of parts or components must be documented by approved engine assembly documents and work orders providing traceability and the date of installation. The engine in which the part or component was installed must have been operated within the limitations and guidelines as outlined by the original equipment manufacturer’s manual, or technical data approved by or released by Timken Aftermarket Solutions, or any technical data approved by OEM or FAA other than the existing manuals. The engine must not be modified in any way, except for FAA approved STC or modifications approved by the OEM. The part or component must not be modified in any way, unless expressly approved by Timken Aftermarket Solutions. If the engine, PMA part, or repaired component has not been maintained and operated in accordance with the original manufacturer’s manuals or other expressly approved written instructions, has been replaced or altered outside of Timken Aftermarket Solutions facilities in any way which may impair its safety, operation, or efficiency and must not have not been subjected to misuse, neglect, accident, or damage by the elements. This limited warranty is void if the PMA part or repaired component is subjected to misuse, corrosion, erosion, over-temperature, improper installation, accident, foreign object damage, improper storage, or damage in transit.

This limited warranty does not cover bearings which have been repaired or modified or used in conjunction with third-party equipment not authorized or intended by Timken Aftermarket Solutions, bearings subjected to unusual physical, thermal, or electrical stress, improper installation, misuse, abuse, accident, or negligence in use, storage, transportation or handling, or bearings considered consumable units or units requiring repair or replacement due to normal wear and tear (if any).

Timken Aftermarket Solutions must have an opportunity to inspect any part or component subject to a warranty claim.

Limitations of warranty
These limited warranties are provided by Timken Aftermarket Solutions in lieu of any other warranties, express or implied, including any implied warranty of merchantability or fitness for a particular purpose. The terms contained herein constitute the entire agreement of the parties and warranty representations of Timken Aftermarket Solutions. TAS shall not be liable for any consequential, incidental, or other damages sustained by purchaser, including but not limited to loss of use of product or claims of purchaser’s customers for any damages. This exclusive remedy applies regardless of the nature of purchaser’s claim, whether in contract, tort, express or implied warranty, negligence, or strictliability, upon which damages are claimed and regardless of whether the same is due to its negligence or any defect in its product or services.

Continued limited warranty after remedy
Limited warranty for covered part(s) continues from the original date of installation of a covered part by the warranty. The use of a new part at Timken Aftermarket Solutions' option does not constitute a new warranty period or extend the warranty for warranted parts. The use of repair option carries the remaining original limited warranty period or repair agency’s warranty whichever is greater.

Statements of limited warranty and exclusive remedy
Limited warranty and exclusive remedy for discs and software
Timken warrants the compact discs on which the software is recorded shall be free of defects in materials and workmanship under normal use for a period of ninety (90) days from the date of delivery. Timken further warrants for a period of one (1) year that the software will substantially perform the functions described in the documentation provided by Timken when operated on the designated hardware and operating system. Timken does not warrant that the software will meet client’s requirement or that operation of the software will be interrupt-free or error-free. Timken is not responsible for problems caused by changes in the operating characteristics of computer hardware or computer-operating systems that are made after the release of the software, or for problems in the interaction of the software with non-Timken software. Any alteration of the software code or mishandling of the compact discs shall void this limited warranty.

This limited warranty is extended by Timken in lieu of any other warranty, express or implied, including any implied warranty of fitness for a particular purpose or any implied warranty of merchantability.

Clients’ exclusive remedy for any breach of this limited warranty shall be the repair or replacement of the software or the compact discs. Upon examination by Timken and finding a defect in material or workmanship, Timken shall repair or replace as stated herein.

Limited warranty and exclusive remedy for StatusCheck hardware products: Timken warrants and represents that the product sold to the client shall conform to the specifications provided by Timken and will be free from defects in material or workmanship. This limited warranty shall remain effective for a period of ninety (90) days from the date upon which the product is shipped.

This limited warranty is provided by Timken in lieu of any other warranty, express or implied, including any implied warranty of fitness for a particular purpose or any implied warranty of merchantability.

Clients’ exclusive remedy for any breach of this limited warranty shall be, at Timken’s discretion, for Timken to repair or replace any product found by Timken to be defective.

Magnuson-Moss Warranty Act:
Legally, a vehicle manufacturer cannot void the warranty on a vehicle due to an aftermarket part unless they can prove that the aftermarket part caused or contributed to the failure in the vehicle (per the Magnuson Moss Warranty Act (15 U.S.C. 2302(C)) Learn More

Vehicle Fitment

Audi 80
1991 Audi 80
  • 087 Transmission
1990 Audi 80
  • 087 Transmission
1989 Audi 80
  • 087 Transmission
1988 Audi 80
  • 087 Transmission
Audi 90
1990 Audi 90
  • 087 Transmission
1988 Audi 90
  • 087 Transmission
Audi 100
1991 Audi 100
  • 3-Speed
1990 Audi 100
  • 3-Speed
1989 Audi 100
  • Automatic Transmission
1977 Audi 100 Series
  • Automatic Transmission
Audi 200
1991 Audi 200
  • Automatic Transmission
1990 Audi 200
  • Automatic Transmission
1989 Audi 200
  • Automatic Transmission
Audi 4000
1987 Audi 4000
  • Automatic Transmission
1986 Audi 4000
  • Automatic Transmission
1985 Audi 4000
  • Automatic Transmission
1984 Audi 4000
  • Automatic Transmission
1983 Audi 4000
  • Automatic Transmission
1982 Audi 4000
  • Automatic Transmission
1981 Audi 4000
  • Automatic Transmission
1980 Audi 4000
  • Automatic Transmission
Audi 5000
1988 Audi 5000
  • Automatic Transmission
1987 Audi 5000
  • Automatic Transmission
1986 Audi 5000
  • Automatic Transmission
1985 Audi 5000
  • Automatic Transmission
1984 Audi 5000
  • Automatic Transmission
1983 Audi 5000
  • Automatic Transmission
1982 Audi 5000
  • Automatic Transmission
1981 Audi 5000
  • Automatic Transmission
1980 Audi 5000
  • Automatic Transmission
1979 Audi 5000
  • Automatic Transmission
1978 Audi 5000
  • Automatic Transmission
BMW 5-Series
2003 BMW 540i / M5
2002 BMW 540i / M5
2001 BMW 540i / M5
2000 BMW 528i / 540i / M5
1999 BMW 528i / 540i
1998 BMW 528i / 540i
1997 BMW 528i / 540i
1995 BMW 540i
1994 BMW 540i
1993 BMW M5
1992 BMW M5
1991 BMW M5
BMW 6-Series
1989 BMW 635CSi
1988 BMW 635CSi / M6
1987 BMW 635CSi / M6
1986 BMW 635CSi
1985 BMW 635CSi
BMW 7-Series
2001 BMW 740i / 740iL / 750iL
2000 BMW 740i / 740iL / 750iL
1999 BMW 740i / 740iL / 750iL
1998 BMW 740i / 740iL / 750iL
1997 BMW 740i / 740iL / 750iL
1996 BMW 740iL / 750iL
1995 BMW 740i / 740iL / 750iL
1994 BMW 740i / 740iL / 750iL
1993 BMW 740i / 740iL / 750iL
1992 BMW 750iL
1991 BMW 750iL
1990 BMW 750iL
1989 BMW 750iL
1988 BMW 750iL
1987 BMW L7
1986 BMW L7
1981 BMW 733i
1980 BMW 733i
1979 BMW 733i
1978 BMW 7-Series
BMW 8-Series
1997 BMW 8-Series
1996 BMW 840Ci / 850Ci
1995 BMW 8-Series
1994 BMW 8-Series
1993 BMW 850Ci
1992 BMW 850i
1991 BMW 8-Series
Ford Aspire
1997 Ford Aspire
  • Automatic Transmission
1996 Ford Aspire
  • Automatic Transmission
1995 Ford Aspire
  • Automatic Transmission
1994 Ford Aspire
  • Automatic Transmission
Ford Festiva
1993 Ford Festiva
  • Automatic Transmission
1992 Ford Festiva
  • Automatic Transmission
1991 Ford Festiva
  • Automatic Transmission
1990 Ford Festiva
  • Automatic Transmission
1989 Ford Festiva
  • Automatic Transmission
1988 Ford Festiva
  • Automatic Transmission
Mazda GLC
1985 Mazda GLC
  • Automatic Transmission
1984 Mazda GLC
  • Automatic Transmission
Mazda 323
1987 Mazda 323
  • Automatic Transmission
1986 Mazda 323
  • Automatic Transmission
Mazda 626
1986 Mazda 626
  • Automatic Transmission
1985 Mazda 626
  • Automatic Transmission
1984 Mazda 626
  • Automatic Transmission
1983 Mazda 626
  • Automatic Transmission
Porsche 911 Series
1978 Porsche 911 Series
  • Automatic Transmission
1977 Porsche 911 Series
  • Automatic Transmission
1976 Porsche 911
1975 Porsche 911
Porsche 924
1988 Porsche 924
  • Automatic Transmission
1987 Porsche 924
  • Automatic Transmission
1982 Porsche 924
  • Automatic Transmission
1981 Porsche 924
  • Automatic Transmission
1980 Porsche 924
  • Automatic Transmission
1979 Porsche 924
  • Automatic Transmission
1978 Porsche 924
  • Automatic Transmission
1977 Porsche 924
  • Automatic Transmission
Porsche 928
1995 Porsche 928
  • From Chassis # 861000
1994 Porsche 928
  • From Chassis # 861000
1993 Porsche 928
  • From Chassis # 861000
1991 Porsche 928
  • From Chassis # 861000
1990 Porsche 928
  • From Chassis # 861000
1989 Porsche 928
  • From Chassis # 861000
1988 Porsche 928
  • From Chassis # 861000
1987 Porsche 928
  • From Chassis # 861000
1986 Porsche 928
  • To Chassis # 860999 / From Chassis # 861000
1985 Porsche 928
  • To Chassis # 860999
1984 Porsche 928
  • To Chassis # 860999
1983 Porsche 928
  • To Chassis # 860999
1982 Porsche 928
  • Automatic Transmission
  • To Chassis # 860999
1981 Porsche 928
  • Automatic Transmission
  • To Chassis # 860999
1980 Porsche 928
  • Automatic Transmission
  • To Chassis # 860999
1979 Porsche 928
  • Automatic Transmission
1978 Porsche 928
  • Automatic Transmission
Porsche 944
1991 Porsche 944
1990 Porsche 944
1989 Porsche 944
  • Automatic Transmission
1988 Porsche 944
  • Automatic Transmission
1987 Porsche 944
  • Automatic Transmission
1986 Porsche 944
  • Automatic Transmission
1985 Porsche 944
  • Automatic Transmission
1984 Porsche 944
  • Automatic Transmission
1983 Porsche 944
  • Automatic Transmission
Porsche 968
1995 Porsche 968
1994 Porsche 968
1993 Porsche 968
1992 Porsche 968
Volkswagen Quantum
1988 Volkswagen Quantum
1987 Volkswagen Quantum
1986 Volkswagen Quantum
Low Prices Price match guarantee
Guaranteed Fitment Always the correct part
In-House Experts We know our products
Easy Returns Quick & Hassle Free

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