Design Engineering Ultra Block™ Sound Barrier - 48 x 48 in Sheet 5M1010HC-STD Phenolic manifold spacers are also

Phenolic manifold spacers are also a popular way of increasing manifold to valve cover clearance to accommodate taller valve covers and get additional clearance

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HEI Advance Curve Kits

12 AN Female to 10 AN Male O-Ring

Design Engineering Ultra Block™ Sound Barrier - 48 x 48 in Sheet 5M1010HC-STD Phenolic manifold spacers are alsoDEI's Ultra Block is the ultimate heat and noise barrier, engineered to reduce extreme temperatures and unwanted sound in even the toughest environments. Designed to withstand intense conditions, Ultra Block effectively shields against heat and dampens noise from generators, under hood areas, and more. Perfect as a hood liner or for any high heat, high noise application, Ultra Block helps create a quieter, cooler, and more comfortable experience.