5-Piece Spark Plug Thread Repair Kit M14 M16 Yato YT-17582 - Poland

YATO YT-17582 is a specialized 5-piece spark plug thread repair kit, designed to recreate and repair worn, stripped, or damaged spark plug threads on gasoline engine cylinder heads.

The product is developed by Yato Tools from Poland, part of the GRE series, meeting high mechanical precision requirements in the automotive and motorcycle repair industry.

Practical Issues in Spark Plug Thread Repair

Spark plug threads (typically M14x1.25) on aluminum cylinder heads are prone to damage due to:

• Over-tightening causing thread tearing
• Frequent assembly and disassembly
• Eccentric spark plug installation
• High-temperature corrosion

When threads are damaged, technicians often face three options:

1. Replace the entire cylinder head – very costly
2. Manually re-thread – lacking precision
3. Use a specialized repair kit – the optimal solution

The YT-17582 is precisely designed for the third solution.

Solution from YATO YT-17582

The kit allows:

• Tapping to enlarge the thread to M16x1.25 standard
• Installing an M14x1.25 thread insert to restore the spark plug 's standard size
• Ensuring the spark plug still meets the original technical specifications

This solution helps restore the thread structure without weakening the cylinder head.

Specifications of YATO YT-17582 5-Piece Spark Plug Thread Repair Kit

• Brand: Yato
• Product Code: YT-17582
• Series: GRE
• Number of Pieces: 5
• Thread Sizes: M14x1.25mm, M16x1.25mm
• Tapping Material: Carbon Steel #45
• Insert Material: Carbon Steel #20
• Application: Gasoline engine spark plug

The kit includes:

• 1 M16x1.25 tap
• 4 M14x1.25 thread inserts (10mm, 11mm, 13mm, 19mm)

Operational Principle:

The YT-17582 operates on the principle of external threading – restoring internal threads using intermediary inserts.

Step 1: Expand the Thread

The M16x1.25 tap (carbon steel #45) has high hardness and torque resistance. When tapped into the damaged thread hole:

• Removes the torn thread portion
• Creates a new M16x1.25 thread with the correct geometry
• Ensures a precise thread pitch of 1.25mm according to the metric ISO standard

Step 2: Install the Repair Insert

The carbon steel #20 insert is manufactured with:

• An external thread of M16x1.25
• An internal thread of M14x1.25

When screwed into the tapped hole:

• The insert creates a two-layer mechanical connection
• Redistributes the spark plug tightening load
• Reduces stress concentration at the original aluminum thread

Result: The standard M14 spark plug fits properly, with stable tightening force and no combustion chamber leakage.

Practical Applications

In automotive repair, especially for 4-cylinder and 6-cylinder gasoline engines, damaged spark plug threads often occur on aluminum heads. The YT-17582 allows workshops to handle repairs on-site without removing the entire engine.

In the motorcycle sector, particularly for popular scooters and motorcycles in Vietnam, M14 spark plugs are very common. This kit enables quick restoration, saving costs on replacing cylinder heads.

In professional garages, this tool helps:

• Reduce repair time
• Increase technical reliability
• Lower warranty costs

For skilled DIY mechanics, this is an essential tool for handling damaged threads on engine heads.

Advantages Transformed into Benefits

• Carbon steel #45 is twist-resistant → Stable tapping, no broken tips
• Carbon steel #20 insert → Good thread grip, increased lifespan
• Standard thread pitch of 1.25mm → Ensures combustion chamber airtightness
• 4 insert lengths → Flexible for spark plug hole depth
• Lightweight 5-piece kit → Easy to carry for mobile repairs

Usage & Safety Instructions

1. Clean the spark plug hole, removing metal shavings.
2. Apply cutting oil to the tap.
3. Tap slowly, keeping the axis straight.
4. Clean shavings after tapping.
5. Install the appropriate depth insert.
6. Tighten the spark plug to the manufacturer 's recommended torque.

Note: Do not tap when the engine is hot. Avoid letting metal shavings fall into the combustion chamber.

Frequently Asked Questions

• Is this kit suitable for all types of spark plugs?
  • It is suitable for M14x1.25mm spark plugs – commonly used in motorcycles and gasoline engines.
• Is it necessary to remove the cylinder head for repairs?
  • Repairs can be done on-site if performed correctly and protecting the combustion chamber from metal shavings.
• Are the inserts durable?
  • If installed correctly, their durability is equivalent to or greater than the original aluminum threads.

The 5-Piece M14 M16 Spark Plug Thread Repair Kit YATO YT-17582 is a precision mechanical solution that accurately recreates threads, saves costs, and ensures engine operational safety.

Suitable for professional garages, mechanics, and technicians in need of reliable spark plug thread repair tools.

Yato Tools & Kocu Vietnam: High-Quality Tools for Professionals

Since 2015, Kocu Vietnam has been the proud exclusive distributor of Yato Tools in Vietnam. Driven by the mission to provide high-quality products and optimal solutions, we have partnered with thousands of auto garages, mechanical workshops, and industrial sectors nationwide.

Yato Tools—a renowned brand from Poland—has established its global prestige with over 30 years of experience and a presence in more than 100 countries. Our partnership allows Kocu Vietnam to offer not only European-standard hand tools but also reliable after-sales services, meeting the diverse needs of Vietnamese consumers.

Extensive Product Range (Over 10,000 Items) Yato Tools offers an exceptional variety of products catering to multiple industries:

• Electrical Tools: Multimeters, insulated pliers, and electrical repair kits.
• Automotive & Motorcycle Repair: Socket sets, diagnostic equipment, and air compressors.
• Construction Tools: Drills, cutters, woodworking, and installation tools.
• Safety Equipment (PPE): Safety glasses, gloves, and helmets.
• Measuring Tools: Tape measures and digital measuring devices.
• Hand Tools: Wrenches, screwdrivers, adjustable wrenches, and repair toolsets.

Superior Quality from Yato Tools
Developed on modern production lines, Yato products meet international standards such as CE, ISO, and GS. We guarantee:

• High Performance: Stable operation even in harsh environments.
• Maximum Durability: Made from premium materials with superior strength and wear resistance.
• Safety First: Strict quality control processes before leaving the factory to ensure user safety in all working conditions.

Why Choose Kocu Vietnam?

1. Exclusive Authentic Distribution: All products come with full CO and CQ certifications (Origin and Quality).
2. Reliable Warranty Policy: Ensuring customer rights with official manufacturer warranties.
3. Comprehensive Support: An experienced technical team ready to provide expert advice and assistance.
4. Competitive Pricing: High-quality products at prices that suit various market segments.

Partnership Opportunities – Grow With Us
Kocu Vietnam is currently looking for distribution partners nationwide. This is your opportunity to join the Yato Tools network and tap into the vast potential of a prestigious global brand.
Contact us via Hotline: 0909.85.83.86 for detailed information and attractive incentives.

Contact Information

• Hanoi: 093.631.8800
• Da Nang: 0973.530.520
• Ho Chi Minh City: 0909.85.83.86
• Websites: www.yato.vn | www.kocuvietnam.vn

Kocu Vietnam is more than just a distributor; we are a trusted partner for professional technicians, garages, and workshops across the country. Together with Yato Tools, we commit to delivering top-tier quality, long-lasting performance, and the best support services.

Experience the difference with Kocu Vietnam! Contact us today to become a part of the Yato Tools network in Vietnam.