4G63 Valve Cover -16 ORB Adapter – No Weld, DIY Install

Eaton MotorWorks – 4G63 Valve Cover -16 ORB Adapter 

Stop risking a finished valve cover just to add a vent.

This adapter was built for those who’ve already invested time and money into their 4G63 setup—and aren’t about to undo it with heat, warping, or inconsistent welds. No shop fees, no downtime, no second chances.

Designed, manufactured, and finished in-house by Eaton MotorWorks, this adapter is built around the OEM 4G63 valve cover to ensure precise fitment while maintaining full hood clearance and OEM radiator cap position. Clean fitment without compromise.

Constructed from carbon fiber reinforced PA6 (PA6-CF), this is a purpose-built material for demanding engine bay environments—offering high strength, excellent thermal stability, and resistance to oil, fuel vapors, and common automotive chemicals.
Rated for continuous operating temperatures up to approximately 120°C / 248°F, with short-term heat tolerance beyond that, it is well suited for real-world under-hood use.

The adapter uses an integrated O-ring seal paired with a 3-bolt M6 mounting system to provide even clamping force and a reliable, leak-free seal under boost and sustained high-load conditions.

Installation is straightforward and fully DIY-friendly: drill, cut, and bolt it in. No welding, no refinishing, no paying a shop—and no dealing with distorted flanges or unattractive welds on an otherwise clean valve cover.

To simplify the process, a drill/cut template is included to accurately mark the mounting holes and port opening for a quick, repeatable install.

Why go -16 instead of multiple -10 lines:

• Greater flow capacity for improved crankcase evacuation
• Fewer fittings and connections = reduced leak points
• Simpler routing and cleaner engine bay layout
• More consistent performance under high boost/load conditions

Why this over a welded bung:

• No heat = no warping, cracking, or coating damage
• No need to strip or redo powdercoat/paint
• Consistent O-ring sealing vs. weld-dependent sealing surfaces
• Fully serviceable and repeatable install
• Eliminates fabrication cost, time, and variability

Features:

• Designed specifically for OEM 4G63 valve covers
• Designed and manufactured in-house by Eaton MotorWorks
• Maintains hood clearance & OEM radiator cap fitment
• -16 ORB outlet for high-flow crankcase ventilation
• Optional -16 ORB to DYME connector (pre-installed, as shown)
• Carbon fiber reinforced PA6 (PA6-CF) construction
• Rated up to 120°C / 248°F continuous use
• O-ring sealed for consistent, leak-free performance
• 3x M6 bolt retention system
• Complete DIY installation
• Drill/cut template included
• Hardware included

Installation Notes:

• Requires removal of factory valve cover baffle
• Requires drilling (3x M6 hole) and cutting valve cover
• Included template simplifies marking and placement
• Ensure proper surface prep for optimal O-ring sealing
• Intended for performance and custom fabrication applications

Lead Time:

• Ships within 10-12 business days