Y-BLOCK B&M Shift Improver Kits Cast from high-carbon gray iron

Cast from high-carbon gray iron with a density rating of 7

Injection-molded from 1/8-inch thick smoke-tinted acrylic with UV stabilizers for long-term clarity

The larger body volume provides deeper sound cancellation for a comfortable cabin experience

Part 78722 is configured for its specific application with attention to fitment requirements

Y-BLOCK B&M Shift Improver Kits Cast from high-carbon gray ironThe MagnaFuel Y Block is a precision machined fuel distribution block that splits a single fuel feed line into two separate outlets, enabling dual carburetor, dual regulator, or dual fuel rail fuel delivery systems. It is an essential component for high horsepower engines requiring two separate fuel pressure regulators or for tunnel ram, dual quad, and cross ram intake manifolds. The Y Block is equally suited for naturally aspirated, nitrous, and