Painless Performance 1999-2006 GM Gen III 4.8, 5.3 & 6.0L Harness Std. Length H760C49XXL High impact Low Rebound pad

High impact Low Rebound pad on bottom

Fits all Rayburn

1/2 in NPT Female to Quick Release Plug

no matter how intricate the design

103 mm Throttle Body Flange

Painless Performance 1999-2006 GM Gen III 4.8, 5.3 & 6.0L Harness Std. Length H760C49XXL High impact Low Rebound pad1999 2006 GM Gen III 4. 8 5. 3 6. 0L EFI Harness Mechanical TB This harness is designed for the 1999 2006 4. 8L, 5. 3L, 6. 0L mechanical throttle body engines using an LS1 LS6 PCM with a 4L60E, 4L65E, 4L70E, 4L80E, 4L85E, or manual transmission. 2003 2006 Engines will require a mechanical throttle body to be installed. 2003 2006 engines which were originally flex fuel will also require Delphi Multec 2 (factory truck style) injectors to be installed.