Product Summary

Universal Fit

  • The two styles offered are Tube Type (121-40, 121-42, and 121-45 also include 2 hollow nozzle screws) and Straight Type.
  • The "SIZE" drop down box allows you to choose what style and size you wish to purchase.
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Key Specs

MFG. Part #121-140
BrandHolley
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Need To Know

Quick and Easy Returns

Return Policy

Details

A good selection of 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 with less pressure than a smaller hole. Sizes are stamped on each nozzle. For example the number "31" indicates the nozzle hole size is .031".

Includes two nozzles and four nozzle gaskets. 

The two styles offered are Tube Type (121-40, 121-42, and 121-45 also include 2 hollow nozzle screws) and Straight Type.

The "SIZE" drop down box allows you to choose what style and size you wish to purchase. 

Tube Type
427121-25  Tube Type Nozzle0.025" 
427121-28  Tube Type Nozzle 0.028"
427121-31  Tube Type Nozzle 0.031" 
427121-35  Tube Type Nozzle 0.035"
427121-37  Tube Type Nozzle 0.037" 
427121-40  Tube Type Nozzle 0.040"  w/ hollow nozzle screw
427121-42  Tube Type Nozzle 0.042"  w/ hollow nozzle screw
427121-45  Tube Type Nozzle 0.045"  w/ hollow nozzle screw

tube Type Nozzle sizes .040” and larger include a hollow nozzle screw.

Straight Type
427121-125  Straight Type Nozzle .025"
427121-128  Straight Type Nozzle .028"
427121-131  Straight Type Nozzle .031"
427121-132  Straight Type Nozzle .032"
427121-135  Straight Type Nozzle .035"
427121-137  Straight Type Nozzle .037"
427121-140  Straight Type Nozzle .040"
427121-142  Straight Type Nozzle .042"
427121-145  Straight Type Nozzle .045"

 

The "SIZE" drop down box allows you to choose what style and size you wish to purchase. 

Tube Type
427121-25  Tube Type Nozzle0.025" 
427121-28  Tube Type Nozzle 0.028"
427121-31  Tube Type Nozzle 0.031" 
427121-35  Tube Type Nozzle 0.035"
427121-37  Tube Type Nozzle 0.037" 
427121-40  Tube Type Nozzle 0.040"  w/ hollow nozzle screw
427121-42  Tube Type Nozzle 0.042"  w/ hollow nozzle screw
427121-45  Tube Type Nozzle 0.045"  w/ hollow nozzle screw

tube Type Nozzle sizes .040” and larger include a hollow nozzle screw.

Straight Type
427121-125  Straight Type Nozzle .025"
427121-128  Straight Type Nozzle .028"
427121-131  Straight Type Nozzle .031"
427121-132  Straight Type Nozzle .032"
427121-135  Straight Type Nozzle .035"
427121-137  Straight Type Nozzle .037"
427121-140  Straight Type Nozzle .040"
427121-142  Straight Type Nozzle .042"
427121-145  Straight Type Nozzle .045"

Specifications

KEY SPECS
MFG. Part #121-140
BrandHolley
GENERAL
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GTIN Code

Ratings & Reviews

5

6 Reviews

Overall Assessment

Our product is applauded for its high quality and practicality. Many customers appreciate its ability to effectively fix engine troubles. It has a reputation as a reliable, accurate part that enhances the vehicle's performance, even in projects requiring more fuel. Several customers have mentioned its size accuracy, though a few wished they had opted for larger sizes. Its usability is praised with some customers even keeping parts despite ordering the wrong sizes. There's a common sentiment favoring our product over others for its reliable, fast delivery and good replacement qualities. Customers would clearly recommend our product for its superior features and performance compared to competitors.

5

6 reviews

5

6

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Worked well

5.0

5 years ago

Russ

Massachusetts

Verified

Fixed the engine stumble.

Would Recommend

Good replacement

5.0

8 years ago

ROOT

E.tx

Verified

Super fast parts delivered to your Door and accurate!

Would Recommend

Yes as needed

5.0

8 years ago

Rc

East texas

Verified

Fast and dependable parts source

Would Recommend

Worked great

5.0

8 years ago

Yerk

Rock Hill sc

Verified

Need a little more fuel so up sized to these and worked great. Also added high flow screw

Would Recommend

look great.

5.0

8 years ago

daver

mo.

Verified

I order the wrong size, but will keep them. next time I will order a larger size. thanks

Would Recommend

wish i went with a 31 or a 35

5.0

10 years ago

cam the maro

lincoln, NE

Verified

They would work great if they were what i needed for my build

Would Recommend

Showing 6 of 6 reviews

Questions & Answers

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