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Old 06-16-2020, 07:21 PM
Effduration Effduration is online now
Join Date: Apr 2019
Location: Boston, MA
Posts: 284
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I use made-in-Germany Beck/Arnley #016-1048 head bolts and am happy with them.

Time-serts are a better threaded insert than a heli-coil in this application.

- It's a sturdier insert that can withstand several torques/removals
- Time-sert makes a specific tool kit/jig for M54 engines (Kit 1090)*
- far more BMW forum members (e46, e39, E53) have used time-serts than heli-coils in a block application.

* Full disclosure - I own kit 1090 and occasionally rent it out to forum members. However, for same or less money you can buy it new/used and sell it on ebay.
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