Your cart is empty
Browse our catalog to find the parts you need.
These images are illustrative and may not match the product exactly. Always verify by part number — or confirm instantly with the assistant using a photo or VIN.
Sika · Tools & Supplies
221-521
In stock · ships from Knoxville
This is a white, one-component polyurethane adhesive and sealant from Sika (Sikaflex-221).
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 4 applications
Add your truck to see whether it's one of them
All confirmed applications for this part number.
Other applications
Other applications
This is a general-purpose sealant/adhesive, not tied to a specific vehicle make or model. It is suitable for any application where a flexible, waterproof polyurethane seal is required.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 1 of 1.
Different year, make, or config? Get a confirmation against your truck in under a minute.
It bonds and seals a wide range of substrates including metal, fiberglass, and painted surfaces on trucks, trailers, and cargo bodies. The thick, paste-like consistency makes it ideal for filling roof seams, side panel joints, and around rivets to stop water intrusion and corrosion. It cures to a flexible, durable seal that moves with the vehicle, and you typically replace it when re-sealing a trailer or repairing body damage.
Part Number: 221-521
SIKAFLEX, WHITE
Unit: ea
Dealer: KP Services Crossville
Compatibility, alternatives, and more
