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Caterpillar Fuel Hand Primer Pump 137-5541 / 172-6291

Caterpillar Fuel Hand Primer Pump 137-5541 / 172-6291

SKU: NLT2T00648
$57.59 In Stock
$57.59
$57.59
Ships for free in 2–4 business days.
This hand primer pump cross-references Caterpillar 137-5541 and 172-6291 and is used to manually fill and bleed compatible CAT diesel fuel systems after filter service or fuel-system opening.
Estimated delivery between
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Compatible Models

We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.

Compatible equipment / model
Compatible equipment / model
CAT 3116 / 3126 / 3126B / 3126E
CAT 3208
CAT 3304 / 3306 families
CAT C7 / C9 / C10 / C11 / C12 / C15 / C18
CAT equipment using 137-5541 / 172-6291-style hand primer

Product Overview

If the primer leaks, will not build resistance or allows air back into the system, the engine may be difficult to restart after a filter change or after the machine runs out of fuel.

Replacing the worn primer restores a manual way to purge air and move fuel toward the injection system without excessive starter cranking.

Key Features & Performance

  • References 137-5541 / 172-6291 / 380151
  • Manual hand-priming function
  • Used on numerous CAT engine families
  • Installs near fuel-filter / transfer-pump system
  • Sealing surface and threads should be checked

Replaces / Cross-References

  • 137-5541
  • 172-6291
  • 380151
  • CA1375541

What Is Included

1 manual fuel primer pump.

Fitment Notes

Compatibility sources list a much broader range than just 'Engine 330,' including 3116, 3126, 3208, 3304/3306, C7, C9, C10, C11, C12, C15 and other CAT applications. Match the original primer thread and base.

Frequently Asked Questions

Is this a genuine OEM part?
No, unless the product page specifically states otherwise. This listing is for a replacement, accessory, upgrade or repair component as described above. OE and interchange numbers are provided only to identify the original part/application it is intended to replace.

How should I verify fitment before ordering?
Match the equipment model, engine model, voltage, connector or terminal layout, mounting points and any reference numbers above against the original component. For engine and fuel-system parts, also confirm the engine serial or injection-pump configuration when available.

Part Summary

Keywords: Caterpillar Fuel Hand Primer Pump 137-5541 / 172-6291, 137-5541, 172-6291, 380151, CA1375541

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