Sinister Diesel Fuel Rail Race Plug for 2004.5–2010 GM 6.6L Duramax

The Sinister Diesel Fuel Rail Race Plug replaces the stock or shimmed fuel rail pressure relief valve with a solid stainless steel plug. Designed to help maintain fuel rail pressure during full-throttle and track driving, it eliminates leakage through the relief valve it replaces.

When preparing your Duramax for the track, this plug provides a solid replacement rather than a shimmed valve solution.

Key features

• Solid stainless steel construction.
• Replaces the stock or shimmed fuel rail pressure relief valve.
• Designed to help maintain fuel rail pressure under full throttle.
• Includes a new O-ring.

Vehicle fitment

2004.5–2010 Chevrolet/GMC 2500 and 3500 trucks with the 6.6L Duramax diesel engine. Confirm your application before ordering; listed fitment begins at 2004.5.

What's included

• 1 Sinister Diesel fuel rail race plug.
• 1 O-ring.

Important purchase information

Not for sale in the State of California.

This solid plug replaces the pressure relief valve rather than retaining its pressure-relief function.