
In stock and ready to ship
Delivery estimate: 1–17 business days (orders process in 0–10 business days, then 1–7 business days in transit). Exact shipping options and rates are shown at checkout. Shipping policy
Returns: 30-day returns on eligible items — unused, uninstalled, in original packaging. Returns policy
This update kit upgrades the 91400A Valve Spring Compressor to the enhanced 91400B version. Designed for improved functionality and ease of use, it includes key components needed for the conversion.