J-B Weld Exhaust System Sealant 3oz
Part #
37903
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Part Number:
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Product Bulletins:
| Part # | 37903 |
|---|---|
| SKU # | 202229 |
| Product Bulletins |
J-B Weld Exhaust System Sealant is a heat resistant paste that is used to seal gaps, smooth seams or seal pipe connections within an exhaust system reassembly or repair. The paste is resistant to temperatures of up to 850°F with negligible, if any shrinkage.
- Temperature resistant sealant
- Withstands heat up to 850°F
- Set time 30 minutes'
- 'Non shrinking
132 Ratings
83% of reviewers recommend this product.
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Review Summary
The JB Weld Exhaust Sealant has received mixed reviews. Some users found it effective at sealing small exhaust leaks, with comments about it sealing well and being easy to apply. However, other users reported issues such as the sealant drying out, flaking, or not holding up to high heat, making it only a temporary fix. Proper surface preparation appears important for best results. Overall, the sealant seems to work well for some users but may not be a long-term solution for all exhaust leak issues.
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107 Reviews
Not worth it,
DAVID6 days agoVerified PurchaseFor a product from a reputable company its sadly not up to its claims. It started flaking out. I followed the instructions of cleaning the area of rust and dirt, slightly dampened the surfaces before applying it but it didn't help. Not worth it, I think jb weld for metal would be a better fit around the leak than this between the adjoining aurfacesPurchased for: 2015 Subaru XV CrosstrekHelpful?
100 %
Anonymous15 days agoVerified PurchaseIt's nice and easy to apply and so far, it's holding up. I'll go back for more.Purchased for: 1999 Volkswagen EuroVanHelpful?
- TOM1 month agoVerified PurchaseWorked, but not as an epoxy also, just high temp seal. Had to put in set screws.
Helpful?
Start here but don't use by itself for long splits
Ron1 month agoVerified PurchaseRecommendedIt dries very quickly, within ten minutes, but don't use it by itself on a split in the exhaust. Use it in combination with something that will wrap and hold the split closed or it will open again.Helpful?
- WILLIAM2 months agoVerified PurchaseNot a strong solid glue
Helpful?
t was not expensive but good quality
Mr Duncan3 months agoVerified PurchaseRecommendedPerfect for what it saidHelpful?
car exhaust
car3 months agoVerified Purchasedid itHelpful?
how to use
rich3 months agoVerified PurchaseRecommendedease of useHelpful?
It will crack on you if used on a flexible part
D.A.Barajas4 months agoVerified PurchaseDid not care for the product. The product dries rock hard and as soon as you hit some bumps, well it cracks and renders your work useless. They do make a much better product for exhaust which is the gold standard for leaking exhaust, and it's the wrap. You wrap your pipes and it hardens when you warm up the car and holds so it works way better.Helpful?
Weldy
Rzwart4 months agoVerified PurchaseRecommendedThis stuff will seal anything. I’m surprised it’s not on a commercial to seal the bottom of boats.Helpful?
I liked
Duralast gold ceramic5 months agoVerified PurchaseRecommendedExcellent productPurchased for: Honda c.r.v 2018Helpful?
Brush its on the area
Austin burby5 months agoVerified PurchaseRecommendedIt work to fill the holes in exhaustPurchased for: Dodge ChargerHelpful?
Good
Eddie6 months agoVerified PurchaseRecommendedMoflePurchased for: 205 kiaHelpful?
Doesn’t work
Enrique6 months agoI follow every instruction and still didn’t seal the leak on my car exhaust.Purchased for: 2011 Chevy CamaroHelpful?
separation of chemicals. watery-runny-too thick
mr 2 swole6 months agoVerified Purchasei used this to patch some small cracks in my exhaust. the tube itself was not ‘mixed’/settled/separated. the first squeeze was water, the middle of the tube was runny paste of the correct substance and the bottom of the tube was so thick it couldn’t be squeezed out. i should have just cut the tube open and mixed it like bondo but the instructions didn’t say that. i ended up going with fiberglass tape.Purchased for: 1mz-fe stockHelpful?
Jb Exhaust Sealant
DANA7 months agoRecommendedAwesome and durable productPurchased for: 2012 Ford Truck F-150 XL 4WD 5.0L FI FFV DOHC 8cylHelpful?
Stong compound
BRADFORD7 months agoVerified PurchaseRecommendedLiquid weldPurchased for: 1992 Ford RangerHelpful?
It works
Ok7 months agoVerified PurchaseGreat product just as describedHelpful?
Metal sealant
BRADFORD7 months agoRecommendedBonds to any metal as long as it's clean.Purchased for: 1992 Ford Truck Ranger 2WD 2.3L MFI SOHC 4cylHelpful?
Great for a quick patch.
Ted8 months agoVerified PurchaseRecommendedGreat exhaust sealant.Helpful?
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