Pro Series GM Gen III/IV LS Bell Housing Bolt Kit

• Fits Gen III/IV LS Engines: Designed for LS bellhousing and transmission mounting applications.

• 190,000 PSI Tensile Strength: Heat-treated 35 chromoly steel construction.

• 12-Point Head Design: Provides secure installation and improved serviceability.

• Ideal for LS Swaps & Transmission Service: Perfect for drivetrain assembly and transmission installation projects.

Secure your drivetrain with the Top Street Performance Pro Series LS Bellhousing Bolt Kit, designed specifically for GM Gen III and Gen IV LS engine applications. Whether you're installing a transmission, completing an LS swap, or replacing missing hardware, this LS bellhousing bolt kit provides the strength and reliability needed to create a secure engine-to-transmission connection in street, performance, and racing applications.

Secure Engine-to-Transmission Installation
Designed to fasten the transmission bellhousing to the engine block, these LS bellhousing bolts help maintain proper drivetrain alignment and secure bellhousing retention. Ideal for transmission replacement, clutch service, engine installation, and LS swap projects requiring dependable LS transmission bolts.

High-Strength Performance Construction
Manufactured from heat-treated 35 chromoly steel with a minimum tensile strength of 190,000 PSI, this bellhousing hardware kit is built to withstand the demands of performance street, racing, and custom drivetrain applications. Threads are rolled after heat treatment and protected with a black oxide finish and oil coating for enhanced durability and corrosion resistance.

Designed for Gen III & Gen IV LS Engines
Engine-specific design provides compatibility with a wide range of LS applications including LS1, LS2, LS3, LS6, LS7, LQ4, LQ9, LY6, L76, L92, and other compatible LS engine combinations. These LS engine-to-transmission bolts are designed for attaching the bellhousing to the engine block using the factory-style LS bellhousing pattern.

Ideal for LS Swaps & Transmission Service
Perfect for transmission installation, clutch replacement, drivetrain service, engine assembly, and LS swap projects where fresh LS transmission bellhousing bolts are recommended. An excellent choice for maintaining a secure engine-to-transmission connection in street, racing, and custom build applications.

What does this bellhousing bolt kit fit?
This kit is designed for GM Gen III and Gen IV LS engine applications requiring bellhousing-to-engine mounting hardware.

What is a bellhousing bolt?
A bellhousing bolt secures the transmission bellhousing to the engine block and helps maintain proper drivetrain alignment between the engine and transmission.

Why replace bellhousing bolts?
Replacing bellhousing hardware during transmission service, clutch replacement, or an LS swap helps ensure proper fastener engagement and secure drivetrain assembly.

Is this kit suitable for LS swap projects?
Yes. This LS bellhousing bolt kit is ideal for LS swap builds, transmission installations, drivetrain repairs, and custom engine projects.

What material are the bolts made from?
The hardware is manufactured from heat-treated 35 chromoly steel with rolled threads, a black oxide finish, and corrosion-resistant oil coating.

What is the benefit of a 12-point head design?
The 12-point head provides improved socket engagement and easier access during installation and service.

Can these be used with manual and automatic transmissions?
Yes. Bellhousing bolts are used to secure compatible transmissions to LS engine blocks in both manual and automatic drivetrain configurations.

Are these useful for transmission replacement projects?
Yes. This kit is an excellent choice when replacing a transmission, performing clutch service, completing an engine installation, or replacing missing factory bellhousing hardware.