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SHMZK Spark Plug Thread Repair Kit

Curated from 105 real Reddit conversations

Refreshed on: February 11, 2025

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SHMZK Spark Plug Thread Repair Kit

Brand: SHMZK
Price: $19
Snoop Score:
8.5
Sentiment
10.0
Popularity
10.0
Technical
7.5
Buy on Amazon for $19See All Spark Plug Thread Repair Kits Reviews
As an Amazon Associate, I earn from qualifying purchases.

Snoop's Take

The SHMZK Spark Plug Thread Repair Kit is designed to effectively restore damaged spark plug threads in automotive gasoline engines and generators. This comprehensive kit includes durable stainless steel inserts and a precision tap, making it an ideal solution for DIY enthusiasts looking to perform their own repairs. Consumer feedback highlights the kit's durable construction, with users appreciating the high-quality stainless steel material. One user noted, "I’ve pulled the plug and to my horror the thread is still fixed inside the well," emphasizing the kit's ability to handle tough repairs. Additionally, users find great value in the convenience of DIY repairs, as the kit comes complete with all necessary tools such as the drill bit and installation tool, facilitating an efficient repair process. Given the positive feedback surrounding its durability and the convenience it offers for DIY repairs, the SHMZK Spark Plug Thread Repair Kit is highly recommended for anyone needing a reliable solution for spark plug thread restoration.

Not for you? Check out our other rated Spark Plug Thread Repair Kits

I’ve pulled the plug and to my horror the thread is still fixed inside the well.

Positive Feedback

Seems to be in very good condition but I am changing the plugs and #3 broke off.

Insightful Chatter
Product
8.5
SHMZK Spark Plug Thread Repair Kit
Buy on Amazon for $19
Repair Damaged Spark Plug Threads
8 / 10
Engine Maintenance
8 / 10
Automotive Workshop Tooling
8 / 10
DIY Engine Repairs
8 / 10
See how this compares to all Spark Plug Thread Repair Kits

What it does well!

Key strengths users can’t stop talking about.
Durable stainless steel construction
“I’ve pulled the plug and to my horror the thread is still fixed inside the well.”➕
Convenience of DIY repairs
“Does anyone have any experience in re-threading a spark plug hole?”➕
“The kit comes with the drill bit, tap, installation tool and the insert.”➕

Compare On All Talked About Dimensions

Product NameImagePriceScoreCompareSee DetailsBuy Now
PONEYA Spark Plug Thread Repair KitPONEYA Spark Plug Thread Repair Kit$89
9.6
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Orion Motor Tech 38900 Two Valve Ford Triton Tool KitOrion Motor Tech 38900 Two Valve Ford Triton Tool Kit$69
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CLLOMAGY 38900 Two Valve Tool KitCLLOMAGY 38900 Two Valve Tool Kit$68
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GallopMax 38900 Two Valve Triton Tool KitGallopMax 38900 Two Valve Triton Tool Kit$65
9.3
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SHMZK Spark Plug Thread Repair KitSHMZK Spark Plug Thread Repair Kit$19
8.5
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FLYPIG M14 x1.25 Carbon Steel Spark Plug Repair KitFLYPIG M14 x1.25 Carbon Steel Spark Plug Repair Kit$10
8.0
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CALIDAKA Spark Plug Repair KitCALIDAKA Spark Plug Repair Kit$19
7.9
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MARKETTY 38900 Two Valve Ford Triton Tool KitMARKETTY 38900 Two Valve Ford Triton Tool Kit$67
7.9
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Camrusic Spark Plug Thread Repair KitCamrusic Spark Plug Thread Repair Kit$17
7.5
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Tookie Spark Plug Thread Repair KitTookie Spark Plug Thread Repair Kit$18
7.2
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BZBMGMO Spark Plug Repair Tooling KitBZBMGMO Spark Plug Repair Tooling Kit$59
7.0
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ZKTOOL 14mm Cylinder Head Rethreaded KitZKTOOL 14mm Cylinder Head Rethreaded Kit$9
6.5
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ABN Spark Plug Thread Repair Rethreading SetABN Spark Plug Thread Repair Rethreading Set$77
5.8
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DPTOOL 14mm Back Tap Spark Plug Thread Repair ToolDPTOOL 14mm Back Tap Spark Plug Thread Repair Tool$15
5.5
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WAONIQ 15 Pcs Thread Inserts M14x1.5 Repair KitWAONIQ 15 Pcs Thread Inserts M14x1.5 Repair Kit$26
5.5
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NINEFOX Spark Plug Thread Repair KitNINEFOX Spark Plug Thread Repair Kit$14
5.0
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LLNDEI Spark Plug Thread Repair KitLLNDEI Spark Plug Thread Repair Kit$63
4.8
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Camrusic Spark Plug Thread Repair KitCamrusic Spark Plug Thread Repair Kit$16
4.3
DetailsBuy
TIME-SERT Time-Sert® M14x1.25 Spark Plug Thread Repair KitTIME-SERT Time-Sert® M14x1.25 Spark Plug Thread Repair Kit$326
4.2
DetailsBuy
A-DCWMool 38900 Two Valve Ford Triton Tool KitA-DCWMool 38900 Two Valve Ford Triton Tool Kit$61
4.0
DetailsBuy
Walfront Spark Plug Thread Repair KitWalfront Spark Plug Thread Repair Kit$21
3.7
DetailsBuy
BZBMGMO M10 X 1.0X12.7 Spark Plug Repair Tooling KITBZBMGMO M10 X 1.0X12.7 Spark Plug Repair Tooling KIT$55
3.0
DetailsBuy
WINTOOLS 26pc Spark Plug Thread Repair KitWINTOOLS 26pc Spark Plug Thread Repair Kit$44
2.5
DetailsBuy
Performance Tool W86910 Spark Plug Repair KitPerformance Tool W86910 Spark Plug Repair Kit$28
0.8
DetailsBuy

Core Power Plays

The specs and strengths that make it shine.
Advice on removing broken threads
“shouldn’t really be any tension on those threads and with the electrode in place you have something to push on to try and rotate it out.”➕
General discussion about spark plug quality
“If you are here asking about a second opinion (ie "Is the shop trying to fleece me?")...”➕

Hidden Hero Hacks

Unexpected tricks and side‑door uses you’ll love.
Discussion about DIY spark plug installation
“DIY EASY! Installed the NGK Laser Iridium ILKAR7L11 94124 plugs.”➕
“Pre-gapped. Engine is running perfectly.”➕
Discussion about bolt extractor kits
“this oddly seems like the perfect job for one of those bolt extractor kits that usually never work and/or break all the time.”➕
Discussion about using helicoils and inserts for repairs
“If your head is aluminum take it slow and easy.”➕

Buyer’s Cheat Sheet

What to check before you click ‘Add to Cart.’
Discussion about spark plug pricing and repairs
“Boomer mad that spark plugs aren’t a few bucks anymore.”➕
“He can change his own points and distributor, right?”➕
“I'VE BEEN AROUND A WHILE, I KNOW THAT SPARK PLUGS ARE 35 CENTS EACH.”➕
Discussion about spark plug replacement frequency
“I believe the recommended replacement is every 40k miles.”➕
Mention of RockAuto as a reliable parts source
“RockAuto is a great site to get car parts (looks outdated but you don't have to worry about fake reviews/products like on Amazon).”➕
Clarification on spark plug warranty
“Spark plugs are a user replaceable component like brakes or wipers, won't affect warranty (as long as you don't break anything)”➕
Discussion about cleaning debris from spark plug areas
“Changed a set of spark plugs and found.. sand in the threads?”➕
“Its dirt/sand that was sitting around the spark plug before it was pulled out.”➕
“I always blow out the recess around the plug with compressed air if I don’t know it’s already free of debris.”➕
“And now there is sand in the engine.”➕
Concerns about product authenticity
“Is it a mistake or am i missing something in the process of chaning spark plugs?”➕
“I'm not too sanguine on installing parts from a seller who accidentally includes Temu crap in my order.”➕
“High chance they are counterfeit junk sparkplugs.”➕

Cautionary Callouts

Know the pitfalls before they catch you off guard.
Discussion about broken spark plugs and repair
“Seems to be in very good condition but I am changing the plugs and #3 broke off.”➕
“You can’t drive without a spark plug especially on a V6, your truck will run like absolute crap if at all.”➕
“Use a bolt extractor and an extension that fits the inside of the threads.”➕
“Thanks for posting on /r/MechanicAdvice! This is just a reminder to review the [rules](https://www.”➕

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