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ATD Tools

ATD-5401 Alloy Steel Insert for ATD-5400

(3 reviews) Write a Review
SKU:
ATD 5401
MPN:
5401
Condition:
New
Availability:
In Stock
Weight:
0.20 LBS
Shipping:
Calculated at Checkout
$22.99
Frequently bought together:

Description

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ATD 5401 single replacement insert for ATD 5400 spark plug thread repair kit.

  • M14x1.25 Taper Seat
  • Steel Alloy shares similar characteristics to aluminum.
  • 10 Times Stronger than aluminum.

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3 Reviews

  • 5

    ATD-5401 Alloy Steel Insert for ATD-5400

    Posted by Adam F. on 6th Apr 2026

    I've been getting these inserts from WiseAutoTools for years, great price, fast shipping, they fit great, install nice, and I've never had one fail.

  • 5

    Exact fit!

    Posted by Frank T on 11th Aug 2016

    Worked great for my F150 4.6.

  • 5

    Large Lip - That's a GOOD Thing

    Posted by Joeseph B on 14th Jul 2016

    The large lip on this insert helped to save my engine. Along with JB-Weld as they recommend it sealed compression right up. The parts store kit I used previously was leaking compression. This did the trick!

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