Twin Power™ manifold spacer replaces H-D 29250-78 for 1978-1989 Big Twin models equipped with butterfly carburetors, ensuring proper intake alignment.

• Direct OEM replacement restores factory manifold spacing on Evolution-era Harley engines
• Essential for carb rebuilds, preventing vacuum leaks and optimizing throttle response
• Precision-machined for secure fit between carburetor and intake manifold