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High-performance engines require sufficient airflow
or you just want an easy bolt-on upgrade with better performance
2001-2010 GM Allison Transmissions (128020200)
Also use with large HO alternator
5L EcoBoost V6
2011-2019 GM 6.6L Duramax EPC Blocker PPE Diesel - 128041119 2024-gmc-sierra-2500-hd-esi1757322 High-performance engines require sufficient airflowThis easy to install kit solves a big problem with the 2011 2019 Allison 1000 transmission. low mainline pressure. Mainline pressure is created by the transmission's oil pump. Mainline pressure is directed by the valve body to the apply pistons and creates clamping force on the clutch packs, allowing the clutch packs to clamp quickly and completely. Reduced mainline pressure, or not having enough mainline pressure at the right time means reduced
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