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AN Fitting Cap Economy Pack
AN Fitting Cap Economy Pack

AN Fitting Cap Economy Pack

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AN Fitting Cap Economy Pack
AN Fitting Cap Economy Pack
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Part # 91009400
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Thread Pitch:
Fitting End A:
-4, -6, -8, -10, -12
Sold in Quantity:


These AN fitting caps have always been hard-to-find items. Caps are used when sealing spare race engines against dirt and water during transportation and storage.

Each cap is reusable. Use on oil, fuel, or coolant lines. Four caps per package.

Economy packs contain one four pack of AN4, AN6, AN8, AN10 and AN12.


Some parts are not legal for use in California or other states with similar laws/regulations

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What's In The Kit

Each kit from Speedway Motors is carefully packaged and delivered right to your door. Below is a list of all the items you should expect to receive when you order this kit. Some of these items may also be available for sale individually if you're here looking for replacement parts.
  • AN4 Fitting Caps, 4/pk
    Qty x 1
  • AN6 Fitting Caps, 4/pk
    Qty x 1
  • AN8 Fitting Caps, 4/pk
    Qty x 1
  • AN10 Fitting Caps, 4/pk
    Qty x 1
  • AN12 Fitting Caps, 4/pk
    Qty x 1

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Q & A

Videos & Articles
  • Since the invention of stainless braided rubber hose, racers and hot rodders have been fighting the problem of installing it into the AN fitting socket. Now, Koul Tools make it easy.
  • Dick from Koul Tools shares a tip on how to properly seat the AN fittings using the Koul Tools device.
  • What fittings should you use with your brake or fuel system? What does AN and NPT stand for? All of these questions plus more will be answered in Speedway Motors' latest article about fasteners!
  • Learn how to assemble AN push-on hose ends the right way. It sounds simple enough, but doing this wrong can cause all number of issues down the road.
    Learn More

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