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Holley

HOLLEY Secondary Diaphragm

MPN: 135-4 Catalog #: 001509124 Category: Carburetor Accessories And Components Check Vehicle Fitment

Product Details

Secondary Diaphragm - Rubber / Steel - Vacuum Secondary - Holley Carburetors - Each

Vacuum Secondary Diaphragm; Carburetor Model Numbers R1849/R3310/R4452-1/R4548/R6520/R6619/R6909/R7002/R7154/R7351/R7855;

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

Fitment: Vacuum Secondary Diaphragm Carb No R1849-50/R3310/R4452-1/R4548/R6520/R6619/R6909-19-79-89/R7002-04-05-06-09-10-53-1/R7154/R7351-97/R7855. Rod length is 2.054in.

DETAILS:

Part Number 135-4 SPECS:

DETAILS:

  • Holley Performance Emission Code 5: This part is legal for sale or use on Emissions Controlled Vehicles; Uncontrolled (Non-Emissions Controlled) Vehicles; and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations
  • Carburetor Accelerator Pump Diaphragm
  • Vacuum Secondary Diaphragm
  • Vacuum Secondary Diaphragm
  • SEC.DIAPHRAGM
  • Carburetor Diaphragm

Part Number 135-4 SPECS:

  • WARNING CA Proposition 65: No

Vehicle Fitment

Universal or product-specific fitment. Please review the product details and contact us if you need help confirming fitment before ordering.

Product Specs

Brand
Holley
Part Number
135-4
Catalog Number
001509124
Product Line
Carburetor Accessories and Components
Category
Fuel Delivery
Type
Carburetor Accessories And Components
UPC / Barcode
090127026885
Length
4.04 in
Width
3.75 in
Height
1.86 in
Weight
0.50 lb
Freight / LTL
175.00
Ship Alone
No
Air Restricted
No
Hazmat
No
Chemical
No
Non-Returnable
No
Case Quantity
1
Kit
No

Shipping & Availability

Current status 10 Available - Ready to ship
Estimated timing Usually ships within 24hrs

This item is showing available inventory. Most in-stock performance parts ship quickly, but timing can vary by warehouse, vendor cut-off time, holidays, and carrier pickup.

Inventory shown: 10 available as of 6/4/2026.

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