Holley 135-4 SEC.DIAPHRAGM

Holley 135-4 SEC.DIAPHRAGM

Holley
HOL135-4
5 In Stock
$28.34
$23.93
$28.34
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Holley 135-4 SEC.DIAPHRAGM

Holley

Holley 135-4 SEC.DIAPHRAGM

$23.93 $28.34
Holley 135-4 SEC.DIAPHRAGM

Holley

Holley 135-4 SEC.DIAPHRAGM

$23.93 $28.34
Description

Holley Vacuum Secondary Diaphragm for Carburetors

SKU: HOL135-4

This vacuum secondary diaphragm is designed for use with Holley carburetors, including model numbers R1849, R3310, R4452-1, R4548, R6520, R6619, R6909, R7002, R7154, R7351, and R7855. It helps regulate secondary throttle operation for smooth, responsive performance under varying engine loads.

Vacuum secondaries are activated by venturi velocity through the primary venturi and further aided by secondary venturi velocity. Engine/manifold vacuum is not related and has no effect on the operation of the carburetor's secondary system.


Additional Information:

Video
Fitment
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Additional Information:

Video
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