CORTECO 01035169B ACM BASLSFRDX7 50x70x8/12 Output Shaft Seal

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The CORTECO 01035169B is a high performance output shaft seal designed specifically for the transfer case in BMW xDrive vehicles. Constructed from premium ACM (polyacrylate rubber) and built to the BASLSFRDX7 standard with a dust lip, this radial oil seal offers exceptional resistance to heat, transmission oils, oxidation, and mechanical wear—even under demanding conditions of vibration and heavy loads.

Key Product Specs:

• Internal / Outer Diameters & Thickness: 50 x 70 x 8/12 mm

• Design: ACM material, BASLSFRDX7 with dust lip for added protection

• OEM Part Numbers: 27107539266, 27107540774

• Function: Seals the output shaft of the transfer case, preventing oil leaks and keeping contaminants out

Why It Matters:

• Ensures tight sealing of the transfer case output shaft

• Prevents oil leakage, which can lead to transmission damage

• Dust lip helps block dirt, debris, and other contaminants from entering the bearing or shaft area

• Extends longevity of drivetrain components

Compatible with (BMW xDrive models):

• BMW 3 Series (E90, E91, E92)

• BMW 5 Series (E60, E61)

• BMW X3 (E83)

• BMW X5 (E53, E70)

• BMW X6 (E71)

(Always verify using vehicle VIN or OEM part number + dimensions 50x70x8/12.)

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FAQ

Q: Will 01035169B fit all BMW xDrive models?
A: It fits any BMW model equipped with a transfer case output shaft that requires a seal measuring 50x70x8/12 mm and OEM part numbers 27107539266 or 27107540774. Confirm using your VIN or the existing part dimensions.

Q: What is ACM and why is it chosen instead of standard rubber?
A: ACM (polyacrylate rubber) is used for enhanced durability in high-heat, oil-exposed environments. It resists aging, oxidation, and hardening better than standard NBR rubber, which is critical for reliable sealing in transfer case applications.

Q: Do I need special tools to install this seal?
A: Installing a seal correctly is important. Use a proper driver tool to ensure even seating. The dust lip should face outward (towards potential contamination). Avoid damaging the sealing lip. If unsure, professional installation is recommended.

Q: How to avoid ordering the wrong seal?
A: Always check OEM numbers (27107539266 / 27107540774) and confirm the dimensions (50x70x8/12 mm). Cross-reference with vehicle’s service manual or inspect the old seal if possible.

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