What is Viton and why is it used for valve seals?

Viton is a type of fluoroelastomer known for its excellent resistance to high temperatures and aggressive chemicals. This makes it a popular choice for valve seals because it can withstand the heat generated by the engine and the harshness of modern engine oils and fuels, ensuring a longer service life.

How many seals are included in this set?

This set comes with 500 valve stem seals. This quantity is typically enough for multiple Honda engines with more than four cylinders, or it provides ample spares for a single engine build.

What is the significance of the 6.6mm stem diameter?

The 6.6mm stem diameter is a specific measurement designed to match the valve guides on certain Honda engines, such as the D16, B18, and H23. Using the correct diameter ensures a tight, leak-free seal around the valve stem.

GSC Power Division Viton Valve Seals 6.6mm Set of 500 B1041

Name: GSC P-D Honda D16/B18/H23 Viton 6.6mm Valve Stem Seal - Set of 500
Brand: GSC Power Division
SKU: gsc-power-division-gsc-p-d-honda-d16-b18-h23-viton-6-6mm-valve-stem-seal-set-of--t14-385522
Price: 350.54 USD
Availability: BackOrder

GSC P-D Honda D16/B18/H23 Viton 6.6mm Valve Stem Seal - Set of 500

$350.54

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

GSC Power Division Viton 6.6mm valve seals for Honda D16/B18/H23 engines. Set of 500.

Key Features

Fits Honda D16, B18, and H23 engines.
Constructed from durable Viton material for heat and fluid resistance.
Features a 6.6mm stem diameter for specific Honda applications.
Set includes 500 valve stem seals, suitable for full engine builds.
Designed to prevent oil leakage past valve guides into the combustion chamber.

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Product Details

Made from Viton, these GSC Power Division valve stem seals are built to handle the heat and stress inside your Honda D16, B18, or H23 engine. The 6.6mm stem diameter means they're designed for specific Honda applications where that size is critical for a proper seal. When you're rebuilding the top end or just replacing worn-out seals, getting the right fit is key to preventing oil from leaking past the valve guides and into the combustion chamber.

This set includes 500 seals, which is more than enough for most multi-valve Honda engines, giving you spares or enough for a full engine build. Viton is a well-known material for its resistance to high temperatures and aggressive fluids, like modern engine oils and fuel additives. This helps ensure these seals will last and maintain their sealing ability over time, even in demanding conditions. Installing them correctly is important; they press onto the valve guide and seal against the valve stem, so a clean guide and proper seating are crucial for performance.