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Holley 534-49 Throttle Body Injection Weld Ring



Part Number

10/04/2033 6:00 AM
Sale Price


In Stock (10+)

delivery box

Usually delivered within 2 days

No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

Holley 534-49 Throttle Body Injection Weld Ring

Throttle Body Injection; Weld Ring; 4 bbl Pro-Jection System;

This sensor bung facilitates easy installation of the oxygen sensors and is designed to be welded into any steel pipe. It comes with the proper threads for any original manufacturer requirement or aftermarket oxygen sensor and is backed by a limited warranty.

  • Backed by limited warranty
  • Comes with proper threads for original equipment manufacturer or aftermarket oxygen sensors
  • Made of high-quality steel
  • Helps install the oxygen sensor on any steel pipe


Products specifications

Bung Material


Bung Type

Oxygen sensor

Cap Included


Fitting Attachment 1

Female threads



Plug Included



Sold individually.

Pop code


Prop 65




Thread Size

18mm x 1.500 in.


12L14 cold roll steel

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seemed a bit hard to find products, but the prices were great and delivery prompt

This is the first time I've ordered from this site, but things look good from what I can tell so far. They had the parts I was looking for (including a fairly specialized racing part) for a price slightly lower than other places I had looked, and my order shipped the next business day. At the time I wrote this, they were also offering $5 back on my order for writing a review. ;-)

Great prices and super fast shipping. Good job.

This was my first order with Autoplicity and I am very happy. They had the lowest price on-line that I found. Communication was great and shipping was very fast. I ordered late on Thursday and it was at my house the following Tuesday, and I didn't pay for rush shipping. I got exactly what I expected. Will do business with these guys again.

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