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freeze or fail
8oz LB7 LLY LBZ LMM LML
The matched ports and a merged runner design reduces exhaust backpressure
This also provides a better
HSM recommends running an upgraded low pressure fuel system when running this item
04-10 Duramax LLY LBZ LMM PPE Billet Valve Cover Kit No Pillars 10 Inch Wide freeze or failDress up your GM 6. 6L Duramax diesel engine with upgraded PPE Billet Aluminum Valve Covers. Available with or without pillars, these new valve covers are precision machined from billet to an overall thickness of . 75" 19mm, 6061 T6 aluminum on a multi axis mill. The PPE Billet Aluminum Valve Covers are a direct, bolt on replacement, which retain the factory gaskets, bolts and grommets, and include a 3 4" 16 O ring boss style crankcase ventilation
