The Holley 135-2 is a vacuum secondary diaphragm that actuates the secondary throttle plates on vacuum-secondary Holley carburetors, fitting list numbers R1848-1, R3220, R6299-1, and R8007. With a 2.047 in. actuating rod, it is a direct replacement for a torn or stiff original diaphragm that is causing the secondaries to open erratically or not at all. It is molded from high-performance rubber for durability.

Holley 135-2 Compatibility Notes:

• Vacuum secondary diaphragm for Holley vacuum-secondary carburetors
• Fits list numbers R1848-1, R3220, R6299-1, and R8007
• 2.047 in. actuating rod length
• High-performance rubber construction
• Sold individually