Collection: Block Off Plates

Seal off unused engine ports completely to prevent devastating vacuum leaks, eliminate carbon buildup tracking loops from deleted emissions components, and streamline your engine bay’s plumbing footprint with our selection in the Block Off Plates collection. At DIY Customs, we provide high-durability billet aluminum block off plates, EGR delete plates, air injection block-offs, and precision-cut high-temperature sealing gaskets engineered to deliver a seamless and perfect fit across your manifold layout. Whether you are packaging an ultra-dense, low-profile block off plate setup to clean up engine clearances safely near advanced vehicle diagnostics or custom car audio wiring on a modified racing hot rod, outfitting your shop garage workspace layout with heavy-duty delete plugs to fleet-maintain hardworking commercial utility trucks, or optimizing intake parameters on your overland travel trailer tow vehicle, our professional-grade drivetrain accessories deliver the extreme material density and pressure safety ceilings you need at unbeatable prices. From raw layout mechanical caps to direct-bolt anodized plates configured for popular import and domestic engine frameworks, we carry the ultimate mechanical curation essentials. Don't see your specific port diameter constraints, exact bolt hole centerline spacing, or specialized manufacturer internal block-off hardware? Hit the live chat or call 412-882-8346—we can special order and drop-ship exactly what your custom engine overhaul or track restoration requires directly to your doorstep!