Y-BLOCK B&M Shift Improver Kits Injection-molded from 1/8-inch thick smoke-tinted

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

Sold as a complete set with sleeves and washers

The three external bypass tubes can be independently adjusted — two for compression zones and one for rebound

This Cylinder Heads is manufactured to meet the demands of street and competition use with attention to the specific requirements of the intended application

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

Y-BLOCK B&M Shift Improver Kits Injection-molded from 1/8-inch thick smoke-tintedThe 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