CSF Oil Cooler for Porsche 911/930 65-89 with Widemouth Stainless Steel Fittings

CSF Oil Cooler for Porsche 911/930 (1965–1989) with Widemouth Stainless Steel Fittings Upgrade cooling reliability and oil flow — engineered to fit both early (1965–1971) and later (1972–1989) 911/930 models, this CSF oil cooler combines improved flow, leak resistance, and durable stainless steel fittings for long-lasting performance. Key Features Universal fit: Single-unit design fits 65–71 and 72–89 Porsche 911/930 applications. Widemouth M30 fitting: Threaded M30 "Widemouth" for 65–71 models preserves optimized inner diameter for maximum oil flow and offers up to 50% greater flow capacity than the OEM connection. Machined stainless steel fittings: In-house CNC machined fittings replace weak OEM aluminum slip-on and threaded connections for superior strength and durability. Leak prevention: Includes two high-quality copper crush washers to ensure a reliable seal and eliminate common OEM leak points. Performance-minded design: Flow-optimized internal passages minimize restriction and support consistent oil cooling under demanding driving conditions. Why Choose CSF CSF applies proven engineering and precision manufacturing to address known failure points of the stock oil cooler. The widemouth stainless fittings and included crush washers deliver improved flow, fewer leaks, and longer service life — ideal for street, track, or restored classic 911/930s.