SKU: 27486757616

Tool Aid SG 23900 Hands Free in-Line Ignition Spark Tester

$14.84 $16.49
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Ships within 48 hours · Estimated delivery Jul 26 - Jul 31

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Description

Tool Aid SG 23900 Hands Free in-Line Ignition Spark TesterUse to quickly trouble shoot ignition system. This device is hands free and shows a duplicate view of the ignition spark. Its plastic body can withstand rough use and resists automotive chemicals. Protected by mechanical strain relief. Features Connects in line between the spark plug and the ignition wire Use to quickly troubleshoot ignition system with "hands free" operation Technician can visually check condition of ignition system at each cylinder

Use to quickly trouble shoot ignition system. This device is hands-free and shows a duplicate view of the ignition spark. Its plastic body can withstand rough use and resists automotive chemicals. Protected by mechanical strain relief.

Features

  • Connects in-line between the spark plug and the ignition wire

  • Use to quickly troubleshoot ignition system with "hands-free" operation

  • Technician can visually check condition of ignition system at each cylinder

  • Frequency and intensity of flash indicates whether there is an ignition system problem or a fault in the fuel delivery system

  • The bright light can be seen in the bright sunlight

Specifications

Manufacturer : SG Tool Aid

Brand : Tool Aid

Item Weight : 1.6 ounces

Product Dimensions : 9.5 x 1.25 x 4.5 inches

Item model number : 23900

Is Discontinued By Manufacturer : No

Manufacturer Part Number : 23900

ASIN : B0002STS4Y

Customer Reviews : 4.0 out of 5 stars 22 ratings 4.0 out of 5 stars

Best Sellers Rank : #1,068,925 in Automotive (See Top 100 in Automotive) #397 in Spark Plug & Ignition Tools

Date First Available : May 9, 2006

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 27486757616

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4.9 ★★★★★
Based on 7 reviews
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Product Reviews
L
Verified Purchase
Lori Wornom
Cuba, US
★★★★★ 4
Flatter than a regular pillow but nice and soft
Number of Items: 1
Is it softer than a typical memory foam pillow? Yes. But it’s also a lot flatter. I don’t find this pillow rebounds very well. It’s good for stomach sleepers but not so much for side sleepers. I’m a 2/3 of the night side sleeper so it’s unfortunately not my magic pillow.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 11, 2026
M
Verified Purchase
Matt
Draper, US
★★★★★ 5
Best pillow for my neck pain.
Number of Items: 1
I've tried so so many pillows to relieve my neck pain at night and this one is the first pillow that has actually worked. I was skeptical at first as this pillow is heavy and dense but one night and I was hooked. I couldn't believe I found a pillow that actually not only was comfortable but also relieved my neck strain. It's worth the cost to now be able to wake up without pain.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026
S
Verified Purchase
Sus from South Africa
Battle Creek, US
★★★★★ 5
Tempur-Cloud Pillow
Number of Items: 1
My daughter has been struggling to find a good pillow that does not hurt her ears. She is a tummy sleeper, as am I. I have also been struggling to find the perfect pillow. I heard about Tempur pillows and thought it a good idea to buy my daughter a pillow for her birthday. It arrived last night. She tried it out during the night. When she woke up this morning, the first thing she said was that the pillow is amazing. It was a good night for her. She said it felt like sleeping on a marshmallow - soft enough to not hurt her ears but firm enough to support her neck. The pillow is very comfortable. 😊
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 29, 2026
A
Verified Purchase
Agnieszka J.
Phoenix, US
★★★★★ 3
Just ok
Number of Items: 1
This pillow flattens so much I’m not sure if it’s a legit tempur pedic or not. I bought one previously from Tempur Pedic store and the quality is better plus is more supportive. This one is meh . I gave it to my husband, he doesn’t care
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 13, 2026
G
Verified Purchase
gini stevenson
Omaha, US
★★★★★ 5
Get one but use it on a medium firm mattress, not a firm one.
Number of Items: 1
You need a mattress that is medium firmness to use this wonderful pillow. It gives perfect neck support and I can sleep on all 4 sides with it. My neck/head pain quit first night used it. On a firm mattress it feels too hard and awkwardly cradle l es my head.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 24, 2026

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