PPE Allison 1000/2000 Series Pressure Calibration Kit 01-10 GM 6.6L Duramax 2004.5 Dodge/Ram 5.9L Cummins The Bosch spring has a

The Bosch spring has a history of breaking and it loses its spring force

With the installation of this kit

upgrading rod bolts is cheap insurance that protects your entire engine investment and keeps everything locked together under extreme stress

These stainless steel Banjo Fittings feature a large diameter (

PPE Allison 1000/2000 Series Pressure Calibration Kit 01-10 GM 6.6L Duramax 2004.5 Dodge/Ram 5.9L Cummins The Bosch spring has aDo you tow heavy with your Duramax? Have you modified your truck for higher horespower? If the answer is yes to any of these questions then the PPE Allison Pressure Calibration kit is for you! This kit serves as a great upgrade when building a 5 or 6 speed Allison 1000 transmission. The increase in line pressure improves your clutches holding ability and the calibration springs will tighten up shifts.