Ultra Marine In-Line Silencer (Moomba Direct Drive)

The UM-107378 is a high-performance fiberglass silencer designed specifically for marine environments. Utilizing fine fiberglass and highly fire-retardant resins, this unit is an ideal choice for reducing noise levels on your ski boat without sacrificing performance.

This lightweight silencer is non-conductive, meaning it is completely unaffected by electrolysis or electrically induced corrosion. It is highly resistant to rust and deterioration in both fresh and saltwater environments, making it compatible with both gas and diesel systems. Best of all, it is engineered to stay within the manufacturer's maximum back pressure limits.

Key Features & Specifications:

• Interchangeable: Can be used for either PORT or STARBOARD sides.
• Direct Replacement: Replaces part number UM-4207 (OEM Part# 104378).
• Compatibility: Fits select 2004 & newer Moomba direct drive models.
• Inlet: Angled 60-degree 3-1/2" inlet.
• Outlet: 3" straight outlet.
• Dimensions:
  • 33" Tip-to-Tip (Total length approx. 34").
  • Main silencer body is 15" long.
  • Features a 1-foot extension from the inlet side.
• Manufacturer: Ultra Marine — Easy to install!

Shipping & Warranty Information:

PLEASE NOTE: Ultra Marine Mufflers are MADE TO ORDER.

• Lead Time: Your order will ship within 4 BUSINESS DAYS of purchase (often sooner).
• Warranty: For full warranty details, click here to view the PDF.