9 foot OFS Inlet Hose Kit | Reverso 35-3951-05

Reverso OFS Inlet Hose Kit | 35-3951-05 | 9-Foot Freshwater Extension | All OFS & OFS-Pro Units

The Reverso Automatic Outboard Flushing System connects to a freshwater supply at its inlet port to deliver fresh water through the engine's raw water cooling circuit during a flush cycle. The standard inlet connection works well when a water source is close to the unit — but on many installations the OFS unit is mounted below deck, in a rigging compartment, or in the bilge, making a direct garden hose connection impractical. The Reverso #35-3951-05 is a 9-foot pre-assembled inlet hose kit that extends the freshwater connection point from the OFS unit to a more accessible location: a deck fitting, a transom connection, or anywhere within 9 feet that makes hookup easier. Compatible with all Reverso Automatic OFS units including OFS-Pro versions.

Part Details:

• Part Number: 35-3951-05
• SKU: REVERSO-35-3951-05
• Manufacturer: Reverso
• Type: OFS Inlet Hose Kit — Freshwater Supply Extension
• Length: 9 feet
• Inlet Connection: Standard 3/4-inch inlet connection
• Compatible With: All Reverso Automatic OFS units, including OFS-Pro versions
• Configuration: Pre-assembled hose section — connects directly to the OFS unit's water inlet port
• Use: Extends freshwater hookup point to deck fitting, transom connection, or remote access location
• Condition: New
• Country of Origin: USA

Additional Information

How the Inlet Hose Kit Fits Into a Reverso OFS Installation:

A complete Reverso OFS installation has three connection points at the engine: the oil drain connection, the oil fill connection, and the freshwater inlet for the flush circuit. The freshwater inlet is where a garden hose or deck water supply connects to deliver fresh water through the engine's raw water cooling passages during a flush cycle. The 35-3951-05 inlet hose kit extends that connection point away from the OFS unit itself, which matters in these common installation scenarios:

• Below-deck OFS unit with deck water fitting — route the inlet hose from the OFS unit up to a deck-mounted water inlet fitting so the garden hose connects at deck level rather than requiring access to the unit below
• Bilge-mounted unit — 9 feet of extension provides enough reach to bring the connection point to the transom or a cockpit drain area where a hose can be connected without lifting hatches
• Remote rigging compartment installations — extend the inlet from a hard-to-access compartment to the nearest accessible location within 9 feet

The hose kit is pre-assembled and connects directly to the OFS unit's standard 3/4-inch water inlet port. No additional fittings or adapters are required for the unit-side connection; verify your chosen termination point (deck fitting, transom fitting, or open hose end) matches your installation plan before ordering.

If you are building a complete Reverso OFS installation, also see:

• Reverso OFS-PRO 3 Engine Setup Fittings Kit (35-3955-01-03) — engine-side adapter fittings for OFS-PRO 3 system installation
• Reverso OFS Remote Switch with 18-Foot Harness (35-3954-06) — helm or console remote trigger for OFS Version 3.0 units

Frequently Asked Questions

1. Is this inlet hose kit compatible with both OFS and OFS-Pro models?
Yes — the 35-3951-05 is compatible with all Reverso Automatic OFS units including OFS-Pro versions. This is in contrast to some other Reverso accessories (such as the remote switch 35-3954-06) which are version-specific. Verify the inlet port configuration on your specific OFS unit against Reverso's documentation if you have any question about fitment.

2. What does the hose connect to at the far end?
The 35-3951-05 is a pre-assembled hose section that connects to the OFS unit's water inlet port at one end. The other end connects to your freshwater supply source — typically a deck-mounted water inlet fitting, a transom fitting, or a direct garden hose connection. The hose uses a standard 3/4-inch inlet connection. Ensure your chosen termination point and any deck or transom fittings use a compatible 3/4-inch connection before ordering.

3. Do I need this kit if my OFS unit is already in an accessible location?
Not necessarily. If the OFS unit is mounted where a garden hose can be connected directly to its inlet port without difficulty, the standard inlet connection on the unit may be sufficient. The 35-3951-05 is specifically for installations where the unit's inlet port is not conveniently accessible and you need to extend the freshwater connection point to a more reachable location.

4. Can I use a longer hose if 9 feet is not enough reach?
The 35-3951-05 provides 9 feet of extension. If your installation requires more reach, contact us at MacombMarineParts.com or Reverso directly to determine if a longer inlet hose option is available, or whether a deck fitting with a standard garden hose extension on the supply side would better suit your installation layout.