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Replacing worn MIG torch consumables is easier when the parts in the kit actually match your torch and wire size. The RIVERWELD MIG MAG Contact Tips Kit reviewed here is an 18-piece replacement set built around .035-inch (0.9 mm) M6 contact tips for MB15 and 15AK MIG/MAG torch front ends. You get several of the parts that normally wear, collect spatter, or need replacement during routine torch maintenance. The main limitation is compatibility: this is not a universal MIG consumables kit, so you should confirm your torch style, thread, and wire diameter before ordering.
Quick Verdict
Rating: Recommended with caveats
Best For: MB15/15AK torch owners using .035-inch (0.9 mm) wire who want several common front-end consumables in one package.
Bottom Line: The kit combines ten contact tips, five gas nozzles, two tip-holder/diffusers, and one plate in a practical 18-piece package. Its value depends on fit, because the .035-inch M6 components are useful only when they match your existing torch setup.
| Specification | Detail |
|---|---|
| Brand | RIVERWELD |
| Product Type | MIG/MAG torch consumables kit |
| Compatibility | MB15 / 15AK MIG welding torch front ends |
| Contact Tip Size | .035 inch / 0.9 mm, M6 |
| Contact Tip Part | 140.0177 |
| Gas Nozzle Part | 145.0075 |
| Tip Holder-Diffuser Part | 002.0078 |
| Plate Part | 191.0001 |
| Contact Tips | 10 |
| Shield Cups / Gas Nozzles | 5 |
| Tip Holder-Diffusers | 2 |
| Plate | 1 |
| Total Package Count | 18 pieces |
Key Takeaways
- The kit is designed around MB15 and 15AK MIG/MAG torch front-end components rather than universal MIG-machine compatibility.
- You receive ten .035-inch (0.9 mm) M6 contact tips, five gas nozzles, two tip-holder/diffusers, and one plate.
- The ten matching contact tips are useful if .035-inch wire is your regular setup and you want replacements ready when a tip wears or becomes damaged.
- Part numbers provide a better fit check than judging compatibility by welder brand alone.
- RIVERWELD sells several similar MB15/15AK bundles, so check the exact package configuration before purchasing.
What Is the RIVERWELD MIG MAG Contact Tips Kit?
The RIVERWELD kit is a collection of replacement front-end parts for compatible MB15 and 15AK MIG/MAG torches. Instead of supplying only contact tips, the package combines the parts most likely to be handled during routine front-end maintenance: contact tips, gas nozzles, and tip-holder/diffusers.
The contact tips are sized for .035-inch, or 0.9 mm, welding wire and use an M6 format. The verified 18-piece configuration contains ten contact tips, five gas nozzles, two tip-holder/diffusers, and one plate. That mix gives you more contact tips than the other components, which makes sense for a consumable that can require replacement as wear develops.
The kit is most useful when you already know that your torch uses the same MB15/15AK-style components. It should not be selected only because your welding machine supports .035-inch wire. Torch front-end design, tip thread, and wire diameter all need to match.
Who Should Buy It?
Best For
- You use an MB15 or 15AK torch with .035-inch (0.9 mm) wire.
- You want several matching tips and nozzles available for routine replacement.
- You prefer buying a small front-end consumables assortment instead of individual pieces.
Skip If
- Your torch does not use MB15/15AK-style front-end parts.
- You normally weld with a different wire diameter or contact-tip thread.
- You specifically need a torch neck, liner, spring, or other part not included in this version.
Before You Buy: RIVERWELD sells several similar-looking MB15/15AK 18-piece kits. This version uses five gas nozzles and one plate, while another 18-piece configuration includes a torch neck and only four nozzles. Check the exact package contents before ordering.
Essential Features of the RIVERWELD MIG MAG Kit
Fit and Compatibility
The most important specification is MB15/15AK compatibility. Consumables attach to the torch front end, so matching your torch style is more important than matching the name printed on the welding machine itself.
The contact tips use the .035-inch (0.9 mm) M6 configuration, with part reference 140.0177. If your existing tip has a different diameter, thread, or physical design, this package may not be the correct replacement even if you use a MIG welder.
Pro Tip: Remove one of your current contact tips before ordering and compare its wire size, thread, and torch family with the replacement specification. Checking the actual front-end part is safer than assuming compatibility from the welder model.
Ten .035-Inch Contact Tips
Contact tips are the main consumable in this package, with ten included. Each tip is designed around .035-inch, or 0.9 mm, wire. The contact tip guides the welding wire at the torch front end and transfers welding current to the wire, so correct sizing matters for consistent feeding and electrical contact.
Having ten identical tips is useful when you regularly run the same wire diameter. You can keep replacements nearby rather than stopping a job to find a single compatible tip after the installed one becomes worn, damaged, or clogged with spatter.
Five Gas Nozzles
The kit includes five shield cups, also described as gas nozzles, using part reference 145.0075. The nozzle sits around the contact-tip area and directs shielding gas around the weld zone.
Nozzles can collect spatter during normal MIG welding. Cleaning a serviceable nozzle may extend its useful life, but keeping replacements available helps when buildup, deformation, or damage makes the existing nozzle difficult to use properly.
Two Tip Holder-Diffusers
Two tip holder-diffusers, part 002.0078, are included. These components support the contact-tip assembly and form part of the torch’s shielding-gas path.
Because only two are supplied, you get fewer spare diffusers than contact tips. That is reasonable for a maintenance kit, but it also means this package is not intended to replace every component inside an MB15/15AK torch.
The 18th Piece: One Plate
The verified package also lists one plate, part 191.0001. Including this piece brings the total to 18: ten contact tips, five gas nozzles, two tip-holder/diffusers, and one plate.
This detail matters because similar product descriptions sometimes highlight only the tips, nozzles, and diffusers. Counting those alone gives 17 pieces, so checking the complete packing list prevents confusion about what should arrive.
Materials and Build
The product is listed with copper as a material, which is consistent with the conductive role of MIG contact tips. The practical issue for you is less about a broad durability claim and more about maintaining clean, correctly sized contact between the tip and the wire.
These parts are still consumables. Heat, electrical load, spatter, wire condition, alignment, and usage time can all affect how quickly individual front-end components need attention.
How It Performs in Real Use
For Routine Shop Welding
If your main setup is an MB15/15AK torch running .035-inch wire, the package gives you a useful group of matching replacements in one place. Ten contact tips make it practical to keep several at the welding bench and a few with your spare consumables.
The package does not change the performance rating of your torch or welder. Its purpose is to replace compatible front-end consumables when the installed parts are worn or damaged.
When a Contact Tip Starts Causing Problems
A contact tip should be inspected when you notice irregular wire feeding, an unstable arc, visible damage, excessive wear at the bore, or repeated burn-back problems. Those symptoms can have several causes, so replacing the contact tip should be part of troubleshooting rather than an automatic cure for every feeding problem.
Because ten tips are included, swapping in a known good tip can help you rule out a worn front-end consumable before moving on to the drive rolls, liner, spool tension, or other parts of the wire-feed system.
For Spatter-Prone Work
Gas nozzles operate close to the arc and can collect weld spatter. The five-nozzle quantity is useful if you prefer having clean replacements available while another nozzle is being inspected or cleaned.
You should still maintain usable nozzles rather than treating every dirty nozzle as disposable. Keeping the gas path clear and checking that the nozzle is seated correctly helps maintain the shielding arrangement intended by the torch design.
For Keeping Workshop Spares
This kit also works well as a small spare-parts supply for a compatible torch. You get more contact tips than diffusers because tips are commonly inspected and replaced as part of front-end maintenance.
For a larger workshop running several wire sizes, however, a single-size .035-inch kit may be restrictive. A mixed-size assortment or separate bins for each wire diameter can make more sense when your setups change frequently.
How to Use the Kit Correctly
Start by confirming that your existing torch and consumables match the MB15/15AK-style components in this package. Check the wire diameter and M6 contact-tip format before removing parts.
Turn the welding equipment off before servicing the torch and allow hot front-end parts to cool. Follow your welder and torch manufacturer’s maintenance instructions, especially when removing or tightening contact tips, diffusers, and nozzles.
When installing a contact tip, use the correct size for your welding wire. A mismatched tip can affect wire movement and electrical contact. After assembly, make sure components are properly seated and that nothing is visibly damaged or obstructing the wire or gas path.
Inspect the nozzle regularly for spatter and inspect contact tips for bore wear, overheating, damage, or contamination. Replace a component when it is no longer serviceable rather than trying to continue using a badly worn part.
Compatibility and Safety
This kit should be treated as a replacement-parts package, not as an upgrade that increases the amperage or duty-cycle capability of your welding torch. Your torch and welding machine ratings remain the limiting factors.
Wear appropriate welding PPE and follow the equipment manufacturer’s safety instructions whenever welding or servicing the torch. Disconnect or switch off equipment before maintenance, keep hot parts away from bare skin, and do not work on a torch front end while it is energized.
If you are unsure whether your torch uses these MB15/15AK components, compare the existing part numbers or check the torch documentation before buying. Forcing incompatible threaded components together can damage the torch front end.
Pros and Cons
Pros
- Includes ten .035-inch (0.9 mm) M6 contact tips.
- Provides five matching gas nozzles instead of only one spare.
- Includes two tip holder-diffusers for MB15/15AK front-end maintenance.
- Verified part numbers make compatibility easier to check.
- Combines 18 pieces in one package for buyers who regularly use the same torch and wire size.
Cons
- Limited to the specified MB15/15AK-style front end and .035-inch M6 tips.
- Similar RIVERWELD 18-piece listings can contain a different mix of components.
- The package does not include every torch-maintenance component, such as a liner or the torch neck found in another RIVERWELD kit.
What You Can Expect From the RIVERWELD Kit
The strongest practical advantage is convenience. When all of your regular work uses a compatible MB15/15AK torch and .035-inch wire, keeping ten matching contact tips and several nozzles together reduces the need to purchase replacements individually.
The kit is less useful if your shop regularly changes wire diameter or uses several torch families. In that situation, the quantity of identical .035-inch tips can become less valuable than a mixed assortment tailored to your actual equipment.
Fit should therefore be your first buying decision. Once compatibility is confirmed, the package gives you a straightforward collection of commonly serviced front-end components without unnecessary complexity.
Is It Worth the Price?
The RIVERWELD 18-piece set sits in the budget-oriented consumables category and makes the most sense when you would otherwise buy several .035-inch tips, nozzles, and diffusers separately. Its value comes from the quantity and component mix rather than from extra accessories or a broad range of wire sizes.
You get the most value if .035-inch wire is already your standard setup. Ten same-size tips are useful in that situation because every spare can serve the same torch configuration.
It is not the best fit if you need a mixed-diameter assortment, a replacement torch neck, or consumables for another torch family. Buying the wrong inexpensive kit is still wasted money, so compatibility matters more than package price.
How It Compares to Alternatives
RIVERWELD offers a larger 33-piece MB15/15AK option that combines .030-inch (0.8 mm) and .035-inch (0.9 mm) contact tips, plus gas nozzles, tip-holder/diffusers, a plate, springs, and insulating sleeves. That type of assortment is more flexible if you regularly switch between the two wire diameters.
Another RIVERWELD 18-piece .035-inch kit includes a torch neck, but it reduces the gas-nozzle count from five to four. That version may make more sense if you specifically need a replacement torch neck. The kit reviewed here is the simpler choice when your priority is ten .035-inch tips, five nozzles, and two diffusers for an existing compatible front end.
Frequently Asked Questions
Which torches are compatible with this RIVERWELD kit?
The verified product configuration is intended for MB15 and 15AK MIG/MAG torch front ends. Confirm your existing part style and thread before ordering because compatibility depends on the torch assembly, not only the welding-machine brand.
What wire size are the contact tips made for?
The ten contact tips are .035 inch, or 0.9 mm, with an M6 format. Use a tip size that matches your welding wire and compatible torch specification.
How many pieces are actually included?
The verified configuration contains 18 pieces: ten contact tips, five gas nozzles, two tip holder-diffusers, and one plate. The plate is easy to overlook when counting the main welding consumables.
Can a worn contact tip be reused?
A serviceable tip can be removed, inspected, and reinstalled, but a badly worn or damaged tip should be replaced. An enlarged or damaged bore can contribute to poor wire contact or unstable feeding, so continuing to use a worn tip is usually false economy.
Can I use these tips when welding aluminum?
Do not choose the kit based only on the base metal you plan to weld. The contact-tip size and MB15/15AK front-end compatibility must match your setup, and aluminum wire systems can also require specific liners, feeding arrangements, and consumables recommended by the equipment manufacturer.
Are these parts suitable for heavy-duty welding?
The parts are replacement consumables for compatible MB15/15AK torch assemblies. They do not increase your torch’s amperage or duty-cycle rating, so heavy-use suitability is determined by the torch and welding equipment specifications.
How long should the contact tips last?
There is no reliable fixed lifespan for a contact tip because wear varies with current, duty cycle, wire quality, feeding alignment, heat, spatter, and operating conditions. Inspect the tip regularly and replace it when wear or damage begins affecting reliable operation.
The Bottom Line
The RIVERWELD MIG MAG Contact Tips Kit is a practical replacement bundle when your torch uses MB15/15AK front-end parts and .035-inch (0.9 mm) M6 contact tips. Its main strength is the useful mix of ten tips, five gas nozzles, two tip holder-diffusers, and a plate, while its main limitation is its narrow fit and wire-size compatibility.
Buy it when those specifications match your existing setup. Skip it if you need another wire diameter, another torch family, or the alternative RIVERWELD package that includes a torch neck.
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