sevencow M11 x 1.5 Head Bolt Thread Repair Kit — 33mm Stainless Inserts, Foam Case

The sevencow 35119S M11 x 1.5 Head Bolt Thread Repair Kit restores stripped or damaged M11 x 1.5 head-bolt threads to safe, serviceable condition for many import and domestic engines.

If a head bolt hole in an engine block or cylinder head has damaged threads, replacing the whole casting is expensive and time-consuming. This kit gives technicians and experienced DIYers a targeted repair option: precision tools and longer 33mm wire-thread inserts engineered specifically to re-establish full bolt engagement for M11 x 1.5 head bolts used on Toyota, Honda, Cadillac and other vehicles.

How does the kit repair stripped head-bolt threads?

The kit removes the damaged material, prepares a clean counterbore, and installs a longer, threaded stainless steel insert sized to restore the original bolt pitch and strength. Each step uses a dedicated, precision-ground tool so the finished repair holds torque and resists pull-out.

• Precision drill bit sizes the damaged hole accurately
• Counterbore cleans and sizes the top of the bolt bore for insert seating
• Install driver and hex wrench seat the 33mm insert flush and secure
• Replacement bolts allow immediate reassembly with correct thread engagement

What makes the 33mm inserts better than shorter alternatives?

Longer inserts increase the thread engagement length inside the casting, distributing torque over more material and lowering the risk of insert pull-out under engine loads. For head-bolt applications—where clamping force is high—this added engagement improves repair durability compared with shallow inserts.

• 33mm length gives extended engagement for high-torque head bolts
• Full-length insertion reduces stress concentration at the top of the bore
• Stainless construction resists corrosion in engine environments

What tools are included and how do they simplify the job?

The kit arrives as a compact set with each tool shaped for a consistent, repeatable process. Tools are precision-ground and molded into a foam-cut storage box so parts stay organized and protected between jobs.

• One drill bit and counterbore—ground for accurate hole and seating prep
• Install driver and hex wrench—for correct, controlled insertion torque
• Twelve replacement bolts included so you can reinstall head hardware immediately
• Compact foam-lined storage case keeps tools secure and easy to carry

Will this kit work on my vehicle engine?

The 35119S is engineered for M11 x 1.5 metric head bolt threads and fits many import and domestic engines, including models from Toyota, Honda, Cadillac, Nissan, Scion, Isuzu, Hyundai, Kia and more. Always confirm thread size and application before beginning work.

• Designed specifically for M11 x 1.5 head-bolt applications
• Fits a wide range of import and domestic engines—verify manufacturer specs
• Replaces part number 35119S for direct compatibility in many service scenarios

Who is this for: The sevencow 35119S kit is built for professional mechanics, automotive machine shops and experienced DIY enthusiasts who need a dependable, repeatable repair solution for stripped M11 x 1.5 head-bolt threads. If you service Toyota, Honda, Cadillac or similar engines and want a repair that restores original bolt engagement without replacing castings, this kit provides the precision tools and longer inserts required for a robust result. The set includes a one-year warranty and responsive customer support if you have questions during installation.