
The Story
Heavy duty valve springs are Cummins OEM 3916691 white strip springs. The 60lbs spring is required for exhaust brake applications and is suggested for all governor spring installs. Governor spring kits allow the Bosch P7100 to spin the engine RPM up to 4000 RPM. Each kit comes complete with parts for either 3000 or 4000 RPM.
PacPro spring kits are perfect for those who tow heavy loads and want more responsive power.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Description
Heavy duty valve springs are Cummins OEM 3916691 white strip springs. The 60lbs spring is required for exhaust brake applications and is suggested for all governor spring installs. Governor spring kits allow the Bosch P7100 to spin the engine RPM up to 4000 RPM. Each kit comes complete with parts for either 3000 or 4000 RPM.
PacPro spring kits are perfect for those who tow heavy loads and want more responsive power.



















