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(79-89) Fox Body Oil Pressure Sending Unit Extension Install

Posted 6/18/2019 by Taylor Ward

Needing to replace your existing 79-89 Mustang Oil Pressure Sending Unit Extension? We provide a video install and step-by-step process for your build.

FOLLOW: fox body , 79 93 mustang , mustang , oil system

(79-89) Fox Body Oil Pressure Sending Unit Extension Install - (79-89) Fox Body Oil Pressure Sending Unit Extension Install

This part is essential for those wanting to replace an existing extension or finishing up an engine build wanting new components to coincide with their new engine. This part properly extends the sending unit away from the engine block to ensure proper clearance. It is also machined with factory tolerances to ensure a good fit from the original extension. Dimensions of this unit are:

  • 3-1/4 Shaft Length (not including threaded section)
  • 1/2" long threaded section
  • 3/4" Stalk
  • Zinc Finish

Before beginning install you will need brake clean, shop towels, high-temp thread sealer or teflon tape and an assortment of tools. Also support the vehicle as high and safe as you can get it if working on jack stands. Clean up any oil or grease buildup so you can better view the area.

  1. Disconnect the oil pressure sending unit electrical connection
  2. (79-89) Fox Body Oil Pressure Sending Unit Extension Install - (79-89) Fox Body Oil Pressure Sending Unit Extension Install

  3. Loosen the sending unit with a 9/16” open end wrench
  4. (79-89) Fox Body Oil Pressure Sending Unit Extension Install - (79-89) Fox Body Oil Pressure Sending Unit Extension Install

  5. Keep a rag read to catch any oil and remove the sending unit from the extension (either use a ¾ socket with a wobble adapter and long extension or ¾ open end wrench to loosen the extension if you have the room)
  6. (79-89) Fox Body Oil Pressure Sending Unit Extension Install - (79-89) Fox Body Oil Pressure Sending Unit Extension Install
    (79-89) Fox Body Oil Pressure Sending Unit Extension Install - (79-89) Fox Body Oil Pressure Sending Unit Extension Install

  7. Remove the extension and wipe any oil that might run out. Note: You may want to remove the oil filter for additional work room
  8. (79-89) Fox Body Oil Pressure Sending Unit Extension Install - (79-89) Fox Body Oil Pressure Sending Unit Extension Install
    (79-89) Fox Body Oil Pressure Sending Unit Extension Install - (79-89) Fox Body Oil Pressure Sending Unit Extension Install

  9. Before installing the new sending unit extension you will need to verify that the oil metering groove is free of any burrs or foreign material. If it is needed you can lightly de-burr the opening with an appropriate drill bit then use compressed air to remove any foreign material
  10. (79-89) Fox Body Oil Pressure Sending Unit Extension Install - (79-89) Fox Body Oil Pressure Sending Unit Extension Install

  11. This is also a good time to clean your sending unit or replace it
  12. Apply a high temp thread sealant or Teflon tape to the male fitting on the extension and sending unit
  13. (79-89) Fox Body Oil Pressure Sending Unit Extension Install - (79-89) Fox Body Oil Pressure Sending Unit Extension Install

  14. Make sure the threads in the engine block are free of any foreign material=
  15. Install the new extension and finger tighten. Torque specs for ¼” fittings are 1 ½-3 turns past finger tight or 25 lb-ft. Note: when torquing make sure it is oriented correctly. Verify that the diagonal end of the extension is facing up and towards the 2-o’clock position
  16. (79-89) Fox Body Oil Pressure Sending Unit Extension Install - (79-89) Fox Body Oil Pressure Sending Unit Extension Install

  17. Install the sending unit and properly torque
  18. (79-89) Fox Body Oil Pressure Sending Unit Extension Install - (79-89) Fox Body Oil Pressure Sending Unit Extension Install

  19. Reconnect the electrical connection (reinstall the oil filter if removed)
  20. (79-89) Fox Body Oil Pressure Sending Unit Extension Install - (79-89) Fox Body Oil Pressure Sending Unit Extension Install

    INSTALL DONE! Check below to purchase an extension and similar items!


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About the Video

5.0Resto Mustang Fox Body Oil Pressure Sending Unit Extension (79-89) - Review & Install

Check out our YouTube channel for even more tech tips, installation videos, how-tos, and more. The best place to go for anything Mustang related!

Published on 2019-06-17
1979-1989 Mustang 5.0 Resto Oil Pressure Sending Unit Extension
If you are building a motor from scratch, sometimes it's hard to find the "little" parts that slow your progress. This is the Oil Pressure sending unit tube extension that screws into the side of the block. This 5.0 Resto sending unit extension features the correct 1/4" NPT thread fittings to get your project completed in no time!

Dimensions
- 3-1/4 Shaft Lenght (not including threaded section)
- 1/2" long threaded section
- 3/4" Stalk
- Zinc Finish

Applications
-Fits: 1979-1989 Mustang
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Late Model Restoration LMR SVE 5.0Resto
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Due to factors beyond the control of LMR.com, we cannot guarantee against the improper use or unauthorized modifications of this information. LMR.com assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. LMR.com recommends safe practices when working on vehicles and or with tools seen or implied in this video. Due to factors beyond the control of LMR.com, no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not LMR.com.
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