Honda Stock Replacement Oil Pan - 1.6/1.8L

The MOROSO Honda Stock Replacement Oil Pan for 1.6/1.8L B-Series engines is a purpose-built rear sump design engineered for street and strip applications where reliable oil control and deep-pan capacity are essential. This 4-quart capacity unit delivers the extra volume required for sustained high-RPM operation while maintaining proper scavenging characteristics on both road and track. Available in durable black powder coat finish, this oil pan provides the same mounting footprint and oil return path as OEM units while accommodating the demands of modified and stock Honda powerplants.

At 6 inches deep with a 1/2 inch NPT drainback port, this steel pan is constructed to handle the thermal cycling and pressure cycling typical of both street driving and racing scenarios. The drainback port design allows custom oil return line routing for turbo, supercharger, or other auxiliary system integration without requiring adapter fittings. The 4-quart capacity provides a safety margin above minimum oil level during cornering and acceleration, reducing the risk of oil starvation at the pickup—a critical consideration for B-Series engines running sustained boost or high-load conditions. The rear sump layout keeps weight distribution balanced and accommodates modern aftermarket exhaust systems that would interfere with traditional front-mounted designs.

This replacement pan suits builders upgrading fuel delivery, ignition, and induction systems on Honda B16, B18, and B20 platforms for street tuning, autocross, or weekend track duty. It's equally applicable to bolt-in conversions where OEM pans prove inadequate, or where custom engine bay layouts demand a rear sump configuration. The 1/2 inch NPT port accommodates standard return line fittings, making integration with aftermarket fuel pressure regulators, catch cans, or turbo systems straightforward without custom fabrication.