CRT M54 / M52tu Cylinder Head Bolt Thread Repair & Reinforcement Kit

Specially designed tool and repair kit for restoring and reinforcing the cylinder head stud threads in M54 / M52TU engines.

The kit enables precise and reproducible machining of the existing M10 threaded holes. An aluminum guide plate and integrated drill bushings ensure that drilling and tapping are positioned accurately.

The included 30 mm long steel thread inserts can then be installed to permanently reinforce the threads in the engine block. The stripping strength of the reinforced threads is approximately 23% higher than that of the original aluminum threads.

The solution is suitable both for repair purposes, to restore threads damaged by head gasket failure, and as a preventive reinforcement measure to prevent thread stripping in performance-enhanced engines.

Scope of delivery

-Choice of 4x or 14x steel thread inserts, length 30 mm

-1 × aluminum guide plate with pressed-in drill bushings

-1 × HSS spiral drill bit with depth stop

-1 × HSS blind hole tap with depth stop

-1 × high-strength thread locker

-2 × set screws with flat shank

-1 × M10 screw

-2 × M12 × 1.5 screws

-1 × thread insert installation tool (hand tool)

-Choice of an additional set of new OEM-quality cylinder head screws

Application

The aluminum guide plate is positioned and secured to the engine block using the provided fasteners. The engine block can remain installed in the vehicle, and the work can be carried out using standard hand tools (e.g., cordless drill and tap wrench).

The existing threaded holes are machined according to the tool guide. The threads are then prepared, and the steel thread inserts are installed using the included installation tool and high-strength thread locker.

CORE RACE TECH – BUILT FOR THE TRACK.