Is this silicone-based

Yes...if you look for Threebond products you'll find similar sealers and better information (Synthetic rubber/RTV/Silicone based) , Threebond 1104 is grey in color Like Yamabond 3 and has a 150deg. Celsius max temp, Threebond 1215 is also grey in color and has 250deg Celcius max temp...I believe Threebond makes the Yamabond 3 , it just gets private labeled...I use Yamabond 3/Threebond 1215 on all my engine cases since the 70s, works great...the Threebond brand may have a cost savings when compared to yamabond 3...both are kinda gooey to work, a Popsicle stick may help you spread it on mating surfaces prior to assembly...a little goes a long way...hth

Can I use on crank case on dirt bike.

I used the product on my Yamaha golf cart engine. It is for sealing a split case engine. Have not had any leakage. thx, John

Will this seal a split case of a 2000 Yamaha Roadstar 1600cc engine? full of power and heat.

Yes and I think it's the best sealant there is! I use it on air cooled split case vw's and it works awesome!

Can this be used on valve cover gaskets to help seal ?

yamabond is normally used in a metal to metal sealing application....like between sealing two engine cases together ( typical in motorsport applications)...for valve covers on American cars...I suggest Permatex "The Right Stuff" P/N 85224 ( about $22)...Amazon has it listed...most factory OEMs use this Permatex product for their valve cover sealing on V-8 and V-6 engines...hth

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YAMAHA Yamalube Yamabond 4 3 oz.

Product ID: 332068173

Details

Brand
YAMAHA
Item dimensions L x W x H
43.2 x 20.3 x
Item weight
3 Ounces
Material
Silicone
Style
Compact

⏳Never cures in tube, lasts years

🧽Easy cleanup, no scraping needed

🛠️OEM-grade precision sealant

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Description

🛡️ Seal like a pro, last like a legend.

TRUSTED OEM QUALITY - Genuine Yamaha part ensures perfect fit and performance for select models.
EFFORTLESS MAINTENANCE - Seals tight but peels off cleanly with a rag—no razor blades or damage.
LONG LASTING FRESHNESS - Formula never hardens inside the tube—use every drop, even after months.
PERFECT SEAL EVERY TIME - Air-cure technology seals only where needed, preventing leaks and over-application.
PRO APPROVED RELIABILITY - Preferred by Yamaha techs since the 90s for unbeatable sealing power.

YAMAHA Yamalube Yamabond 4 is a 3 oz OEM liquid gasket sealant designed specifically for Yamaha motorsports applications. It offers superior sealing performance with an air-cure formula that never hardens inside the tube, ensuring long shelf life and easy cleanup. Trusted by professionals since the 1990s, it provides a perfect, durable seal that peels off cleanly without damaging surfaces.

Specifications

ASIN	B00545V1ZE
Best Sellers Rank	#3,327 in Automotive ( See Top 100 in Automotive ) #22 in Automotive Fillers, Adhesives & Sealants
Brand Name	YAMAHA
Compatible Material	Rubber
Customer Reviews	4.8 4.8 out of 5 stars (1,035)
Item Dimensions	43.2 x 20.3 x 22.9 centimeters
Item Form	Oz
Item Weight	3 Ounces
Manufacturer	Yamaha
Material Type	Silicone
Model	13
Part Number	ACC-BOND4-MC-00
Style Name	Compact
UPC	718721184366
Water Resistance Level	Water Resistant

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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£52.18

Duties & taxes included

In stock

Sold byAmazon UKDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to UK.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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