4.34.3 out of 5 stars
49 product ratings
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Would recommend94% agree

Good value88% agree

Good quality93% agree

43 reviews

by Top favourable review

Money Saver

Having an old motorbike with a muffler peppered with holes and no way of getting a replacement at present, this product has been a godsend.

I was able to force the cement into the small holes, leave overnight, and it set like steel, which I then gave it a coat of exhaust paint.

End result - Exhaust fixed using a first class product .
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Verified purchase:  Yes | Condition: new | Sold by: sparesbox_auto

by Top critical review

JB Weld Extreme Temperature limitations

I found this product suitable for sealing thin metal such as mufflers but not so good on thicker parts. I tried plugging a wrongly drilled hole in bronze measuring 12mm wide and 15mm deep and it didn't harden much below 3 mm. The surface was hard enough to file, but when redrilling the hole, the underlying filler was quite soft. I tried this again and left it for two days rather than 24 hours, but much the same result. I eventually filled the hole using standard JB weld mixed with bronze metal filings. It dried rock hard all the way. I left it for 48 hours before redrilling and this worked fine.Read full review...

Verified purchase:  Yes | Condition: new | Sold by: factorydealsdir...

by

Bloody awesome for small repairs.

Easy to use
Good to apply
Just make sure you apply it liberally.
Let it dry properly.
I use this on a small hole and crack in my extractors on a V8 .
Let it dry for 24 hours
Heated up the exhaust only for a few minutes then left it again for 12 hours.
It's worked perfectly, just make sure you sand down the area first properly.
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Verified purchase:  Yes | Condition: new | Sold by: sparesbox_auto

by

Satisfactory band aid fix.

Does what is recommended. Very easy to apply and sets consistently.

Verified purchase:  Yes | Condition: new | Sold by: sparesbox_auto

by

Exceptional product

Easy to use, easy to sand & paint. Brilliant product. Very happy.

Verified purchase:  Yes | Condition: new | Sold by: myautosupplies

by

Useful product

Haven't had a chance to use product, have confidence will work as described.

Verified purchase:  Yes | Condition: new | Sold by: discounttrader

by

Easy to work with

Excellent Product & very easy to use looks and feels like metal great for grinding & sanding

Verified purchase:  Yes | Condition: new | Sold by: myautosupplies

by

Worked well

Bit thin to mould to shape till it starts to go off but used it in an alloy exhaust port and does seem to be working as advertised

Verified purchase:  Yes | Condition: new | Sold by: greatautomotive

by

Excellent product to use

Product did the job I was hoping for,excellent.

Verified purchase:  Yes | Condition: new | Sold by: myautosupplies

by

JB high heat Past

I have used this product ones before and need to repair the exhaust again may be I just didn't get right in the damaged area, here I go again.

Verified purchase:  Yes | Condition: new | Sold by: sparesbox_auto

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