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Holley

HOLLEY Pump Discharge Nozzle

MPN: 121-40 Catalog #: 001508787 Category: Carburetor Discharge Nozzles Check Vehicle Fitment

Product Details

Accelerator Pump Discharge Nozzle - 0.040 in ID - Tube Type - Holley Carburetors - Pair

Fuel Cell EFI Pump Module Assembly; 6-Bolt Flange; Drop-In; 225 LPH; 132 GPH; 8 AN Inlet/10AN Outlet; 87 Max PSI; For Use w/E85/Gasoline;

Updating your racing fuel system to EFI is so simple! Holley is excited to introduce our Holley Fuel Cell EFI Pump Modules. While the name includes EFI, these modules can be used as an upgrade for carbureted systems as well with the proper regulator. The modules were designed to drop in as a direct replacement for your existing 6 bolt flange fuel cell cap assembly. The billet top flange includes an 8AN inlet port, a 10AN outlet port, and a fuel filler cap. The fuel pump depth is fully adjustable from 7.5 to 12 deep. The EFI modules are available with single and dual 255 LPH fuel pumps. The module kits include all the hardware to install into your existing fuel cell. All that you need to add is your fuel line.

Fitment: 6 BOLT FLANGE DUAL 255 LPH PUMP HANGER

DETAILS:

Accelerator Pump Discharge Nozzle; 0.040 in. Hole Size; Tube Type; Incl. 2 Nozzles/4 Gaskets/Hollow Pump Screws;

A good selection of accelerator pump discharge nozzle sizes is indispensable to the proper tuning of the accelerator pump system. The nozzle hole size determines the rate of fuel discharge. A larger hole will shoot the fuel at a faster rate, and with less pressure, than a smaller hole. Sizes are stamped on each nozzle. For example, the number 31 indicates that the nozzle hole size is .031-inches. Various styles of nozzles are offered by Holley.

Fitment: Accelerator Pump Discharge Nozzle 0.040 in. Hole Size Tube Type Includes 2 Gaskets

Part Number 12-140 SPECS:

Part Number 121-40 SPECS:

Accelerator Pump Discharge Nozzle - 0.040 in ID - Tube Type - Aluminum - Natural - Holley Carburetors - Pair

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 Nozzle
  • Accelerator Pump Discharge Nozzle
  • 0.040 in. Hole Size
  • Includes 2 Gaskets
  • Tube Type
  • PUMP DISCHARGE NOZZLE
  • CrbAclPmpNzz

Part Number 12-140 SPECS:

  • Flange Type: 6 Bolt
  • Free Flow GPH: 132
  • Fuel Type: E85
  • Fuel Type: Gasoline
  • Fully Open: 510
  • Inlet Size: 8AN
  • Maximum PSI: 87
  • Outlet Size: 10AN
  • WARNING CA Proposition 65 Message: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
  • WARNING CA Proposition 65: Yes

Part Number 121-40 SPECS:

  • Material: Aluminum
  • Nozzle Size: 0.040 in.
  • Nozzle Type: Tube Type
  • WARNING CA Proposition 65: No

Accelerator Pump Discharge Nozzle - 0.040 in ID - Tube Type - Aluminum - Natural - Holley Carburetors - Pair

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
121-40
Catalog Number
001508787
Product Line
Carburetor Discharge Nozzles
Category
Fuel Delivery
Type
Carburetor Discharge Nozzles
UPC / Barcode
090127021019
Length
5.05 in
Width
3.45 in
Height
1.15 in
Weight
0.07 lb
Ship Alone
No
Air Restricted
No

Shipping & Availability

Current status 3 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: 3 available as of 6/4/2026.

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