Sea-Dog Replacement Non-Locking Cap for 2 Inch Hose Deck Fills, 351391-1

The Sea-Dog 351391-1 is a replacement non-locking cap for Sea-Dog 2 inch hose deck fills. It is designed to replace the locking cap on the 2 inch hose Gas and Diesel deck fill assemblies, giving boat owners a quick-access, key-free option for their deck fill. The cap measures 2-1/8 inches in diameter and uses an 11-1/2 NPSM straight thread pitch to mate with the deck fill body.

It is machined from investment cast 316 stainless steel for corrosion resistance and long-term durability in a marine environment. The cap is sold as a standalone replacement part, separate from the deck fill body, hose barb, and fasteners.

Specifications

• Brand: Sea-Dog
• Manufacturer Part Number: 351391-1
• Type: Replacement Non-Locking Cap
• Compatible Deck Fill Hose Size: 2 inches
• Cap Diameter: 2-1/8 inches
• Thread Pitch: 11-1/2 NPSM straight
• Material: Investment cast 316 stainless steel
• Weight: 0.322 pounds
• Product Dimensions: 2.69 x 4.44 x 1.69 inches
• UPC: 035514351027

Fitment

• Compatible with Sea-Dog 351330L (Gas) 2 inch hose locking deck fill
• Compatible with Sea-Dog 351331L (Diesel) 2 inch hose locking deck fill

Frequently Asked Questions

What is the Sea-Dog 351391-1? The Sea-Dog 351391-1 is a replacement non-locking cap for 2 inch hose deck fills, sold as a standalone spare cap rather than a complete deck fill assembly.

Does the 351391-1 lock with a key? No, the 351391-1 is the non-locking version of the cap, unlike the standard locking cap that comes on the Sea-Dog 351330L and 351331L deck fills.

What is the cap diameter of the 351391-1? The cap diameter is 2-1/8 inches, with an 11-1/2 NPSM straight thread pitch for mating to the deck fill body.

What deck fills is this cap compatible with? The 351391-1 fits Sea-Dog 351330L (2 inch hose, Gas) and 351331L (2 inch hose, Diesel) locking hose deck fills.

What material is the 351391-1 cap made of? It is machined from investment cast 316 stainless steel, chosen for corrosion resistance in marine environments.

How much does the 351391-1 weigh? This replacement cap weighs 0.322 pounds.

What are the dimensions of the 351391-1 cap? The product dimensions are 2.69 x 4.44 x 1.69 inches.

Is the 351391-1 a full deck fill or just the cap? It is just the cap, part number 351391-1, intended to replace the cap on an existing 2 inch hose deck fill assembly rather than the entire unit.

Can I use the 351391-1 on both gas and diesel deck fills? Yes, the 351391-1 is compatible with both the 351330L Gas and 351331L Diesel 2 inch hose deck fills since it shares the same 2-1/8 inch, 11-1/2 NPSM straight thread cap fitting.

What is the thread pitch on the 351391-1 cap? The thread pitch is 11-1/2 NPSM straight.