Will this bolt straight to my factory exhaust manifold?

Yes. This converter mounts at factory connection points — no welding or custom fabrication needed. Hand-tighten the bolts first to confirm alignment before final torque.

Do I need a gasket or O2 sensor spacer?

Gaskets may be required at the manifold connection depending on your vehicle's service history. Inspect the mating surface before installation and replace any damaged gaskets. O2 sensor compatibility is standard to the platform.

What happens if there's exhaust leakage after install?

A leak usually means the bolts need retightening or the gasket seated unevenly. Loosen all connection points, reseat the gasket, and tighten in a crisscross pattern. If leaking persists, the mating surface may need cleaning or a new gasket.