Description:

This diaphragm operates the carburetor accelerator pump circuit. When the throttle linkage actuates the pump, it displaces fuel to provide a brief enrichment shot during throttle opening. A hardened, torn or leaking diaphragm can cause hesitation and may leak fuel, depending on the carburetor design.

Replaces OEM #16021-413-751

• Operates the carburetor accelerator pump circuit
• Helps provide the enrichment fuel shot during throttle opening
• Inspect the pump cover, spring and passages during installation

Fits

• 1981-1982 Honda GL500
• 1981-1982 Honda GL500I
• 1982 Honda CB450SC