For Peugeot 607 Brembo calipers with M12 bolts: the bolts thread into steel inserts (hardened steel threaded sleeves) pressed into the aluminum caliper body - not into aluminum-only threads. This is standard for Brembo OE calipers to provide proper clamp strength and wear resistance.

What should these bolts be torqued to?

For Brembo calipers on a Peugeot 607 with M12 caliper retaining/bridge bolts, torque is typically 110-140 Nm. The most commonly specified value for Peugeot 607 rear/front caliper mounting bolts is 120 Nm.

Recommendation:

Torque bolts to 120 Nm.
Use a calibrated torque wrench and apply thread lubricant or anti-seize only if specified by the parts manual (usually dry threads or manufacturer-specified threadlocker).
Replace bolts if they are stretch/torque-to-yield type or show damage; use OEM-grade replacements.
If you want the exact factory spec, tell me the model year and whether they are front or rear calipers and I'll look up the official Peugeot service spec.

Loctite hade jag valt en variant som håller för temperaturen av ett bromsok och skickat framtida problem vidare till framtida mekaniker.