Aluminum Thermostat Adapter Plugs for BMW E90 E60 E61 E83 1 3 5 7 Series
These aluminum thermostat adapter plugs deliver a precise repair path for worn or cracked coolant bungs on established BMW models. Rather than replacing costly radiator housings or cylinder head components, you can install these solid blanks to restore complete system sealing. Engineered specifically for M47N2 and M57N2 diesel architectures, the adapters bolt directly into factory threaded ports, stopping leakage while maintaining optimal heat exchange efficiency.
Constructed from solid aluminum, the units tolerate repeated thermal cycling and resist common glycol-based coolant degradation. This targeted replacement method protects your budget while keeping engine temperatures within manufacturer thresholds.
Benefits & Installation Tips
- Eliminate persistent leaks: Swap damaged plastic or corroded bungs directly without purchasing complete cooling module replacements.
- Prepare mating surfaces cleanly: Remove old sealant and debris before fitting to guarantee a pressure-tight seal against coolant flow.
- Apply torque gradually: Hand-start threads first, then tighten incrementally to prevent cross-threading or flange distortion.
Technical Specifications
- Material: Machined aluminum alloy
- Finish Options: Black or silver coating
- Vehicle Compatibility: BMW 1 series (E87), 3 series (E90–E93), 5 series (E60–E61), 7 series (E65–E66), X3 (E83), X5 (E53–E70), X6 (E71)
- Engine Platforms: M47N2 / M57N2 diesel variants
- Part Reference: BOP40
Package Includes
- 1 pair of aluminum thermostat adaptation plugs
Important Usage Notes
Always depressurize and allow the cooling system to reach ambient temperature before beginning maintenance. Cross-threading or overtightening can compromise the sealing surface, so verify alignment during initial placement. Match your exact production month and chassis code to confirm thread pitch compatibility before fitting.
Language Support: English
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