Fits Nissan RB25 / RB30 to TH400 Turbo 400 Automatic Steel Bellhousing Speedmaster rocker arm adjusting nuts

Speedmaster rocker arm adjusting nuts are high-quality polylocks designed for full roller rocker arms

They utilize O-ring sealing and are manufactured from high-quality billet aluminum

Speedmaster DNA roller rockers are the toughest and most innovative rockers we've ever made

Many people are replacing their stock 4

Fits Nissan RB25 / RB30 to TH400 Turbo 400 Automatic Steel Bellhousing Speedmaster rocker arm adjusting nutsSpeedmaster conversion steel bell housing couples the Nissan RB25 RB30 engine to your Turbo 400 automatic transmission. This gives you the ability to run a much stronger and reliable transmission to your high performance engine.