TH350/400 Shift Lever

The B and M Automotive TH350/400 shift lever is a direct-replacement transmission control component engineered for enthusiasts and mechanics building or restoring classic and modern muscle cars with TH-series or 4L-series automatic transmissions. This steel shift lever delivers the positive engagement and reliable actuation that high-performance and street-driven vehicles demand, eliminating sloppy factory controls and enabling precise gear selection during acceleration, highway cruising, and track use. Whether you're upgrading a 1970s Chevrolet with a TH350 or retrofitting a TH400 into a custom hot rod, this lever provides the mechanical confidence that separates quality builds from compromised installations.

Constructed from durable steel in a natural finish, the TH350/400 shift lever features a compact, ergonomic design optimized for response and durability under continuous use. The lever's geometry is engineered to minimize bind and backlash in the transmission linkage, translating hand input directly into crisp gear changes without the dead zones or hesitation common in worn factory setups. All necessary mounting hardware is included in the kit, streamlining installation and ensuring proper alignment with your transmission's detent mechanism. The natural steel finish resists corrosion in engine bay environments and accepts paint or powder coating if a custom appearance is desired.

This shift lever is ideal for restorations, engine swaps, and performance builds using Turbo 350, Turbo 400, 700R4, 2004R, 4L60E, 4L80E, TH200, or TH250 transmissions. Custom car builders, street rod fabricators, and restoration shops rely on B and M transmission controls for their repeatability and fit. Installation is straightforward for mechanics with basic transmission knowledge; the lever mounts directly to the transmission case and connects to your existing floor shifter or column-mounted control via the factory linkage. Verify your transmission model before ordering to ensure compatibility with your specific application.