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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

Fleece Performance 06-10 GM Duramax 6.6L LLY / LBZ / LMM Allison Transmission Cooler Lines 5.9 2022 Chevrolet Silverado 2500 HDFix 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