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EngineQuest SP300L Ford 300 CID Smog Plug Set 9/16-18 Thread

Manufacturer

Picture for manufacturer EngineQuest

Part Number

SP300L
12 reviews
Sale Price

$7.08

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The EngineQuest SP300L smog plugs are specifically designed for Ford 300 CID (4.9L) inline-six engines from 1984 and up. This threaded plug seal is used for the thermactor air injection ports in cylinder heads when removing emissions equipment or converting to a non-emissions setup.

Key Specifications:

  • Thread size: 9/16-18 x 0.55 inches
  • Quantity: 1
  • Made in the USA
  • Compatible with 1984-1996 Ford L6 4.9L (300 CID) engines

Application:

This plug allows you to remove the exhaust air supply rails from cylinder heads equipped with the Thermactor emissions system. They plug the rear holes when not using any emission or thermactor hookups.

Installation Note:

Thermactor ports may contain carbon buildup from years of use. Clean threads thoroughly with carburetor cleaner and a wire brush before installation for proper sealing. Apply thread sealant during installation to ensure a leak-free seal.

Phenomenal prices!

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Grateful to get e-mails concerning my order throughout the shipping time so I knew where it was and when to expect it

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Ordered Tein lowering springs. Shipment arrived fairly quick. Overall process was great. Would order from them again.

I ordered a Grant 1103 Steering Wheel, Order Number: 16767. Great prices, quick shipping, good customer service, an all around deal. Thank you.

Please send it in the Black color

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