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MIS AllStart 38900 Ford Spark Plug Insert Installer P3600007MIS-CV38900 https://cdnimages.opentip.com/full/MIS/MIS-CV38900.jpg AllStart 38900 Ford Spark Plug Insert Installer Spark Plug Thread Repair Kit Packaging Size 9.75 Inch Length X 15 Inch Width X 2.13 Inch Height Weight 3.2 Pound Finish Patented Used On 4.6 Liter, 5.4 Liter, 6.8 Liter EngineFeatures / Benefits Designed to aide in repairing Ford Modular Cylinders Heads A quality foolproof repair system that is cost effective and fast High quality oversized steel alloy insert will repair other inserts that fail and has no ill effects from heat transfer Total labor time as short as 25 Minute Works with Ford Triton Motors 96 to 03 Works with 4.6 Liter, 5.4 Liter and 6.8 Liter engine 389 to 100 Replacement Inserts Patented Part Number: 38900UNSPSC: 25191700Specification Order Part Number CV38900 Item Desc FORD SPARK PLUG INSERT INSTALLER MANUFACTURER LONG NAME Horizon Tool (Cal-Van Tools) ADDITIONAL INFORMATION Finish Patented; Used On 4.6 Liter, 5.4 Liter, 6.8 Liter Engine MANUFACTURER PART NUMBER 38900 Product Group Id CV00 Country of Origin US Harmonization Code 82022000 Bin Code EB222 Default Selling Unit EA Product Group Desc CAL VAN TOOLS Catalog Pages(s) 3600007 470843890036 7.2000lbs 3.00 11.00 16.00
AllStart
318.2500 2027-06-01 14 In Stock
customer review - by , December 12, 2025
5/ 5stars
Expensive but it worked well Better than a hilacoil it's been a few years and still good.
customer review - by , December 12, 2025
5/ 5stars
This kit was awsome, worked better then expected, great quality I recommend highly
customer review - by , November 11, 2025
5/ 5stars
This kit is awesome, really easy to use, it would be impossible to mess up anything as long as you follow the directions.
customer review - by , October 10, 2025
5/ 5stars
Truck
customer review - by , October 10, 2025
5/ 5stars
Only downside is no epoxy or loctite with
customer review - by , October 10, 2025
5/ 5stars
I was planning on using a Helicoil type kit from a local parts store as I had done on a few engines before. However, the tapered seat and thread location in Ford Triton engines are not normal. Even though the spark plug has 10 or more threads, only 4 are used in the cylinder head. Why? We will never know. Using a Helicoil is possible, but you must use an endoscope and fine tune the actual location of the insert before seating it...which is why I bought this kit! No funny guess work, just use some high temp thread locker or JB-Weld and call it a day.
customer review - by , September 9, 2025
5/ 5stars
This was the best kit for retapping my spark plug. Product was designed very nicely and the parts are very sturdy and will be able to use many times. Very easy to use and will save you a lot of money at the shop. Very well made and the instructions are easy to follow. Highly recommend this product.
customer review - by , September 9, 2025
4/ 5stars
Did not like that I had to adapt the air hose fitting to go into a standard air hose coupler. Had to make a run to the hardware store.
customer review - by , September 9, 2025
1/ 5stars
The tools felt cheap and didn't hold up during use. I struggled to align everything properly, and the instructions were unclear.
customer review - by , September 9, 2025
5/ 5stars
2008 Ford E250 blew a plug. Tried using $60 Napa kit, but their insert shredded like a slinky. Don t waste money on any other thredding kit. It may be a bit pricey, but it was worth every penny. Fixed and back on the road in no time!
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AllStart 38900 Ford Spark Plug Insert Installer, Price/EA

stars Rating 5 | 330 reviews
Brand AllStart
Shop more from MIS
UPC: 470843890036
SKU: MIS-CV38900
List Price: $352.68
Price: $318.25
You Save: $34.43 (10%)
Quantity:
14 In Stock
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Product Description

Price is for EA.

  • Spark Plug Thread Repair Kit
  • Packaging Size 9.75 Inch Length X 15 Inch Width X 2.13 Inch Height
  • Weight 3.2 Pound
  • Finish Patented
  • Used On 4.6 Liter, 5.4 Liter, 6.8 Liter Engine


Features / Benefits

  • Designed to aide in repairing Ford Modular Cylinders Heads
  • A quality foolproof repair system that is cost effective and fast
  • High quality oversized steel alloy insert will repair other inserts that fail and has no ill effects from heat transfer
  • Total labor time as short as 25 Minute
  • Works with Ford Triton Motors 96 to 03
  • Works with 4.6 Liter, 5.4 Liter and 6.8 Liter engine
  • 389 to 100 Replacement Inserts
  • Patented


Part Number: 38900

UNSPSC: 25191700

Specification



warning tips WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.

Product Warranty

Most Air and Power tools have a 90 days to one year warranty. Hand Tools are usually lifetime-abuse voids warranty.

Return Policy

The wearable safety items, like golves, masks, respirators, etc, are non-returnable.

Note

This product is not eligible for coupon code discount, for we've been offering the best price in the market.
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Customer Reviews
5 out of 5
see all 330 reviews
5 stars
291
4 stars
17
3 stars
1
2 stars
5
1 stars
16
Write a Review
By EMAN
Date: December 12, 2025
Expensive but it worked well Better than a hilacoil it's been a few years and still good.
Rating: 5 stars [5 of 5 Stars!]
By Royce
Date: December 08, 2025
This kit was awsome, worked better then expected, great quality I recommend highly
Rating: 5 stars [5 of 5 Stars!]
By Drewwon249
Date: November 07, 2025
This kit is awesome, really easy to use, it would be impossible to mess up anything as long as you follow the directions.
Rating: 5 stars [5 of 5 Stars!]
By Tony
Date: October 27, 2025
Truck
Rating: 5 stars [5 of 5 Stars!]
By Sheldon
Date: October 10, 2025
Only downside is no epoxy or loctite with
Rating: 5 stars [5 of 5 Stars!]
By negnewt
Date: October 06, 2025
I was planning on using a Helicoil type kit from a local parts store as I had done on a few engines before. However, the tapered seat and thread location in Ford Triton engines are not normal. Even though the spark plug has 10 or more threads, only 4 are used in the cylinder head. Why? We will never know. Using a Helicoil is possible, but you must use an endoscope and fine tune the actual location of the insert before seating it...which is why I bought this kit! No funny guess work, just use some high temp thread locker or JB-Weld and call it a day.
Rating: 5 stars [5 of 5 Stars!]
Items 1 - 6 of 311 reviews
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