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Calvan 389-100 Single Spark Plug Insert for 38900 Kit 4.6, 5.4, 6.8L

(16 reviews) Write a Review
In Stock
0.10 LBS
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Bulk discount rates

Below are the available bulk discount rates for each individual item when you purchase a certain amount

Buy 2 or above and get $3.00 off
  • Black Oxide Treated 389-100 insert
  • Outside measurement on outside of threads
  • Outer diameter of lip of inserts which can also help seal



Latest design with black oxide rust preventive treatment, cheap copies online are not black! The 389-100 is a single 5.4L replacement sparkplug insert for the Calvan, Horizon Tools M14x1.25 Taper seat 38900 spark plug thread kit. Also works for the equivalent Blue Point FRT10 model sold by Snap On and SP389FC sold by Mac Tools. We've sold the Calvan kit's and inserts to repair Ford spark plug blowouts for years with great feedback! These Cal-Van inserts will last the lifetime of the engine. Of course since you've found this product listing you may already know how great the repair is! We ship the same day if the order is placed before 3PM. Normal ship time is 2-3 days. Need it quicker? Call 800-734-8665.

  • Over-size insert (Only one size is made for this kit). It measures .73" on the outside diameter O.D.
  • Steel Alloy is ten times stronger than aluminum.
  • Buy in bulk and save - see the bulk pricing options.
  • See the YouTube video for more information on Cal Van inserts.
  • Snap On FRT10-INS About 1/2 of the cost compared to the Snap On Tool Truck!

Is your Snap On, Mac or Matco guy out of inserts? Or just looking for a better price? Congratulations it's your lucky day. The 389-100 is equivalent to the Snap On/Blue Point FRT10-INS replacement insert. Snap On sells them for over $35 each. This is also the same spark plug insert for Mac Tools part number SP389FC thread repair kits. Same as Matco FTS389 inserts as well (same manufacturer). Same as CAL389-100, 389-100 ET389-100, ET 389-100, CV389-100, CV 389-100. Also sold as CTA Tools 2367, Mountain 9200, ATD 5400. 


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Warranty Information

Limited Lifetime
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16 Reviews

  • 5
    Cal-Van Inserts are the BEST

    Posted by Cesar S on 15th Jun 2016

    Like the fix plain and simple. Best for my money!

  • 5
    Great Product

    Posted by Rueal G on 19th Feb 2016

    Working on 2000 F350 6.8 V10. Ordered the kit with 3 inserts before, top notch performance. Ordered the rest of the inserts need to complete the whole engine. Quality products, Best price, outstanding customer service and support from knowledgeable representatives.

  • 5
    Cheaper than Snap On!

    Posted by Jeff S. on 29th Jul 2015

    Exact same as Snap On FRT10INS at a much lower cost. Very high quality, couldn't be happier. Bulk pricing makes cost even lower. I do fleet maintenance on Ford's and this repair is a lifesaver!

  • 5
    Best inserts made

    Posted by Pete R. on 8th May 2015

    I have used these inserts without problems in 4 different vehicles. No problems.

  • 5
    Great Value

    Posted by Jim F. on 6th Mar 2015

    The product is an exact replacement for the Snap-On, FRT10 Blue Point spark plug thread repair kit at much better pricing than $30 on the tool trucks, buy in bulk and save. Product is great quality and Wise Auto Tools did everything as they claimed.

  • 5
    Worked Great

    Posted by Terry M on 30th Jun 2014

    All inserts worked the way they were designed to.

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