Engine Parts

CCV (Crankcase Ventilation) reroute kits redirect blowby gases away from the turbo and intake system. Without one, oil vapor builds up in your intercooler and intake tract, causing sludge, boost leaks, and reduced turbo life—especially on deleted trucks running higher boost. SPELAB CCV kits for the 2011-2025 6.7L Powerstroke include an integrated oil catch can to trap oil before it enters the engine.

Factory plastic or stamped steel valve covers crack under high crankcase pressure and heat cycles, leading to oil leaks. SPELAB billet and cast aluminum valve covers for Cummins (5.9L/6.7L), Powerstroke (6.0L/6.4L), Duramax (LLY/LBZ/LMM), and Hemi engines provide superior heat dissipation, zero-fade sealing, and built-in oil fill ports. They eliminate the most common leak points on high-mileage diesel engines.

Head studs are essential when pushing beyond factory boost levels—typically above 35 PSI on the 5.9L and 6.7L Cummins 24V—or if you're experiencing head gasket symptoms (white coolant, oil-contaminated coolant). ARP head studs clamp the cylinder heads with 200,000+ PSI force versus factory bolts at roughly 65,000 PSI. For any delete kit or tuning setup that adds significant boost, head studs are non-negotiable to prevent head gasket failure.

The LML (2011-2015) 6.6L Duramax is notorious for a cracked OEM intake elbow—the plastic unit warps and cracks under high heat, causing boost leaks and CELs. SPELAB's intake elbow bridge kit reinforces or replaces the weak factory elbow, restoring proper boost pressure and eliminating P0101/P0299 codes. It's one of the most common maintenance items on high-mileage LML trucks.

A CCV delete removes the system entirely and vents blowby to the atmosphere—simple but not emissions-compliant. A CCV reroute keeps a closed-circuit system, redirecting gases through an oil catch can that traps oil and returns clean air to the intake. SPELAB CCV reroute kits for the 6.7L Powerstroke are the better choice for street-driven trucks: emissions compliance, no oil buildup, and no CEL triggers.