The BRP / OMC part number 0390006 (also written as 390006) is a factory-original tilt cylinder cap, O-ring, and seal assembly. It is designed for Showa-built power trim and tilt assemblies used on modern Johnson and Evinrude outboard engines.

Unlike the older 0320788 trim cap, this is a tilt cylinder cap (the large centre main ram responsible for lifting the engine high out of the water) rather than a smaller trim ram cap.

New Old Stock (NOS) — genuine factory original part.

Fitment and Compatibility

This cylinder cap fits a wide range of high-horsepower outboards equipped with Showa hydraulic midsections:

• Production Eras: Engineered primarily for 1991 and newer (FastTrak style) outboards.
• Horsepower Range: Fits 50 HP to 300 HP V4 and V6 engine configurations.
• Common Engine Applications: Widely used on popular block variants such as the 1993–1994 V90 and V115 series (e.g., V115SLEND, V90SLEND, V90SLETE).

Global Cross-References

Because Showa manufactured these identical hydraulic systems for multiple outboard brands, this part number features extensive cross-brand interchangeability:

• Suzuki Equivalent: 48401-92J00
• Yamaha Equivalent: 63P-43810-09-00 / 64E-43810-00-00
• BRP Superseded Number: 5033932