VTT B58/S58 Head Port Block-Off Kit / Billet Check Valve Kit

The B58 and S58 have ports in the cylinder head that the factory low-side PCV system uses, drawing crankcase gases out with engine vacuum. The downside is that oil can travel into the intake manifold that way and build up carbon on the valves over time. This kit either seals those ports or converts them.

What you get

• Block off Kit closes the factory head ports.
• B58 Check Valve Kit and S58 Check Valve kit convert the ports with a billet check valve instead of sealing them.
• Aimed at the oil-in-the-intake problem that comes with the factory low-side PCV path.

Brand: VTT · Part #: VTT-OCC-B58-Head-Port-Block-Off-Kit

• Ships from the brand or distributor, usually in 3–7 business days.
• Shipping is charged at the carrier's rate, shown at checkout. Orders over 70 lb ship by freight for a flat $99.
• Unused parts can be returned within 30 days. Some items are marked no-refund in their description.

Full details are on our shipping and returns page.