ACDelco 8663890 Automatic Transmission Oil Pump Cover Ball Check Valve

The ACDelco 8663890 is a GM Original Equipment automatic transmission fluid pump cover ball check valve designed for specific General Motors vehicles. This precision component measures 10.3mm and plays a critical role in automatic transmission operation.

Function and Design:

• Ensures transmission fluid is delivered at optimal pressure to effectively lubricate and cool the transmission system
• Allows air to escape from the fluid circuit when fluid pressure increases during clutch apply
• Made using high-quality materials designed to withstand high pressure and temperature
• Precise manufacturing ensures perfect fit with the transmission oil pump cover

Quality and Warranty:

• GM Genuine Parts are designed, engineered, and tested to rigorous standards and backed by General Motors
• Covered under a 24-Month/Unlimited Mile Warranty
• Provides the same performance, durability, and service life as factory original equipment

Compatible with Buick, Cadillac, Chevrolet, and GMC vehicles, this OE-quality valve helps maintain optimal transmission temperature and pressure levels for smooth, efficient operation.