XUNCHY 8Pcs Oil Valley Block Off Plugs for Gen IV LS & Gen V LT Engines (2005–2019)

Overview

Meet the XUNCHY 8Pcs Oil Valley Block Off Plugs, designed for GM and Chevrolet engines spanning Gen IV LS to Gen V LT platforms. These plugs seal oil passages with precision, creating a clean pathway for a conventional lifter setup when upgrading from DOD/AFM lifters. The result is a tidy oil gallery and a straightforward route for maintenance work, without compromising overall engine packaging.

What you get and where it fits

This eight-piece set targets valley-cover configurations used on 2005–2018 Gen IV and 2014–present Gen V engines. Each plug is manufactured to a precise diameter and profile, delivering a snug, flush seating that minimizes leaks and helps maintain stable oil control under high-temperature and high-demand conditions. The finish emphasizes wear- and corrosion-resistance for longer life in demanding environments.

Key benefits

• Compatibility: built for Gen IV LS family and Gen V LT platforms, including GM/Chevrolet engines.
• AFM/DOD oil passage control: blocks AFM/DOD passages under the VLOM plate when upgrading lifters.
• Quality materials: wear- and corrosion-resistant construction designed to endure engine heat and pressure.
• Easy installation and removal: simple tap-in method, flush final seating, with a top designed for re-tapping if needed.

Installation tips

Installation is straightforward. Light taps seat the plugs into the oil galley hole until the bottom lip is flush. The design allows for easy removal later if your service plan requires re-access to the oil passages. Always confirm alignment with your valley cover and lifter upgrade plan.

Real-world usage and considerations

Enthusiasts and professional shops may use these plugs when upgrading from DOD/AFM lifters to conventional LS/LS7 lifters, or when reworking the oil routing to accommodate a new valve-train setup. While outcomes can vary with vehicle configuration and maintenance history, the plugs offer a practical, cost-conscious option to preserve engine clearance and oil routing integrity during maintenance or upgrades.

Notes

These plugs are intended for genuine DOD/AFM valley covers. They are not universal non-OEM variants. Confirm compatibility with your engine build and follow installation guidance provided by your kit.