Fleece Performance 06-10 GM Duramax 6.6L LLY / LBZ / LMM Allison Transmission Cooler Lines 5.9 these heads utilize stock valves

these heads utilize stock valves with a 45 degree angle on the intake and exhaust ports

2004 Chevrolet Avalanche 1500 Base

The stock valve springs in your Cummins engine are not designed to handle the increased engine RPM or higher boost levels that are common in modified applications

High-Pressure and Low-Pressure

2020 SUBARU IMPREZA 2

Fleece Performance 06-10 GM Duramax 6.6L LLY / LBZ / LMM Allison Transmission Cooler Lines 5.9 these heads utilize stock valvesFix your leaking transmission lines with these heavy duty, high flow, flexible transmission lines. This kit comes complete with everything needed to get the job done right the first time. Transmission lines, o rings, zip ties and washers are included in kit. Transmission Lines