ACDelco PF639G Engine Oil Filter - Professional Series

The ACDelco PF639G is a professional-grade spin-on engine oil filter designed to provide superior protection for General Motors vehicles and most other makes and models. Part of the ACDelco Gold (Professional) line, this oil filter delivers high-quality performance as an alternative to original equipment parts.

Advanced Filtration Technology:

• 98% multi-pass filtration efficiency at 25-30 microns effectively traps contaminants before they enter the engine lubrication system
• Cellulose filter media captures particles as small as 1/3 the width of a human hair
• Poppet-style bypass valve with heat-treated spring matches OEM pressure specifications
• Anti-drainback valve retains oil in the filter after engine shutdown for superior cold-start protection

Heavy-Duty Construction:

• Shell material tested to four times normal engine oil pressure for exceptional burst strength
• Heavy threaded base plate protects against pressure spikes up to eight times normal operating pressure
• Spiral-wound steel core tested to twice the OEM collapse requirement
• Engineered core design provides ten times more open area for improved oil flow

Manufactured to meet rigorous specifications for fit, form, and function, the ACDelco PF639G is backed by General Motors and designed for demanding applications. This professional-grade filter helps ensure clean oil delivery to critical engine components, reducing wear and extending engine life.