Description
CTA Tools 3881 BMW Crankshaft Front Oil Seal Installer – B37, B47, B48, B57, B58, N47 & N57
- Replaces front crankshaft seal on BMW B37, B47, B48, B57, B58, N47 & N57 engines
- Components: 3881X01 – Press Sleeve, 3881X02 – Guide Tool, 3881X03 – Nut & 3881X04 – Screws
- Compare to BMW Factory Tool 118 800
Instructions:
- 1. Using the Guide tool (3881X02), clean off the contact rim and coat with fresh engine oil.
- Secure the Guide tool (3881X02) with the screws (3881X04) to the crankshaft.
- CAUTION! – Make sure all components are properly aligned prior to installation of seal.
- Carefully slide the crankshaft seal over the Guide tool (3881X02) in a straight and rotational movement until it is aligned with the crankcase.
- Position the Press Sleeve (3881X01) over the Guide tool (3881X02).
- Carefully hand-tighten the Nut (3881X03) to ensure the seal lines up correctly.
- After inspection of the seal and all components, begin tightening the Nut (3881X03) until the seal sits flush with the crankcase. CAUTION! – Do NOT overtighten and damage the seal.
- Seal is now properly installed. Carefully remove all 3881 components.





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