GM GENUINE PARTS Engine Oil Filler Tube 12570623 — OEM-fit for Chevrolet/GMC/Buick/Cadillac, durable seal

GM Genuine Parts 12570623 is the factory-style engine oil filler tube engineered to restore correct oil fill access and sealing on compatible Chevrolet, GMC, Buick and Cadillac engines.

When an oil filler tube becomes cracked, warped, or leaks, it can allow contaminants into the engine or make oil changes messy and difficult. The GM Genuine Parts 12570623 filler tube is produced to the same specifications used in originalassembly so it fits and functions like the part your vehicle left the factory with. It’s intended as a direct, drop-in replacement that maintains venting and sealing performance while preserving vehicle value and service history.

What does this filler tube replace and how does it fit?

This part is designed to replace worn or damaged oil filler tubes on specified GM engines. Because it’s manufactured to OEM dimensions and mounting points, installation requires minimal modification—usually only basic hand tools.

• Engineered to match original GM specifications for form and function
• Direct-fit design for factory mounting locations and gaskets
• Compatibility with Chevrolet, GMC, Buick, and Cadillac models as specified by fitment guides

How durable is the 12570623 filler tube and what materials are used?

GM Genuine Parts are built with materials selected for long-term exposure to oil and engine heat. This filler tube resists cracking and distortion under normal operating conditions, helping maintain a secure seal at the valve cover during repeated oil changes.

• Constructed to withstand engine bay temperatures and oil exposure
• Designed to resist leakage and maintain sealing surfaces over time
• Tested and validated by GM engineers for endurance and fit

How simple is installation and what tools are required?

Installation is generally straightforward for anyone comfortable performing routine vehicle maintenance. The 12570623 installs with common hand tools and usually requires removal of a few fasteners to swap the old tube for the new one.

• Typical install needs basic hand tools—socket set and screwdrivers
• Often a quick gasket or O-ring replacement is recommended during installation
• Service manuals or dealer fitment guides clarify torque specs and sequence

Will this part affect engine performance or warranty?

Using a GM Genuine Parts oil filler tube preserves the original design and function of the engine’s oil fill system and supports factory-quality repair standards. Replacing a damaged filler tube with an OEM part prevents oil contamination and helps maintain proper maintenance records.

• Maintains original venting and sealing characteristics
• Supports correct oil change procedures and reduces contamination risk
• Backed by General Motors design and validation processes

Who is this for: The GM Genuine Parts 12570623 engine oil filler tube is aimed at owners, technicians, and independent shops repairing Chevrolet, GMC, Buick, or Cadillac vehicles that require an exact-fit replacement. It’s especially suited for those who prioritize OEM fit, reliable sealing, and parts engineered and validated by GM for long-term serviceability. Choose this part when you want a straightforward, factory-compatible solution to a damaged or leaking oil filler tube.

• Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
• GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
• GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
• GM regularly updates production and service part designs to integrate new materials and technologies