As low as $4.36/mo with or . (Pay in 4 interest-free payments)
WSM Crankcase Block-Off Plate Protect your engine and restore proper fueling. The WSM Crankcase Block-Off Plate seals the crankcase breather port with a precision fit to prevent air leaks that can cause a lean condition and potential engine damage. Precision CNC-machined aluminum for durability, corrosion resistance, and a perfect seal. Replaces deteriorated rubber seals — original gaskets and seals harden and fail over time, allowing unmetered air into the intake. Prevents expensive engine damage by eliminating crankcase air ingestion and preserving proper air/fuel mixture. Easy to install and designed to match OEM mounting points for a clean, reliable fit. Ideal for maintenance, restorations, or performance tuning — the WSM Block-Off Plate is a simple, effective upgrade to keep your engine running safely and efficiently.
Covers the crankcase breather port
Original rubber seals deteriorate over time causing a lean condition
or 
. (Pay in 4 interest-free payments)
