Skip to product information
1 of 1

5/8" Siphon Vented Loop | Forespar 903003

5/8" Siphon Vented Loop | Forespar 903003

Forespar

Regular price $40.95 USD
Regular price Sale price $40.95 USD
Sale Sold out
Shipping calculated at checkout.

Low Stock: 2 left

Quantity

Ordered in the next --h --min | Ships ...
We Proudly Accept
  • Amazon
  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • JCB
  • Maestro
  • Mastercard
  • PayPal
  • Shop Pay
  • Twint
  • Union Pay
  • Visa
Fast Shipping
100% Secure
Fast Delivery
Free Ground Shipping on Orders Over $99Exclusions Apply
Marine Parts Specialist Since 2006
Secure Checkout
Flexible Payment OptionsInstallments in partnership with Affirm
Complete SEI Sterndrive ReplacementsFree Ground Shipping to Continental US!
Piranha Propellers, Propulsion and Performance Kits!Free Ground Shipping to Continental US!

5/8" Siphon Vented Loop | Forespar 903003

FORESPAR 5/8" SIPHON VENTED LOOP 903003

Eliminates siphoning and backflow in marine toilet systems.

  • Eliminates siphoning and backflow in toilet systems
  • Install in between the discharge hose above the waterline, when head or holding tank is below the waterline
  • Precision molded in high strength, lightweight Marelon so vent nor loop will corrode
  • 5/8 in. hose barb size
  • 4 1/2 in. height
  • 4 in. width
  • MF-843 model number
View full details

! Compatibility references are provided for informational purposes only and do not constitute a fitment guarantee. Part numbers, application listings, and "replaces" cross-references are based on manufacturer data and are intended as a starting point for identification — not a guarantee of fit for your specific engine, hull, or installation.

Buyer is solely responsible for verifying compatibility with their engine model, serial number, model year, and trim configuration before purchase. If you are unsure whether this part fits your application, contact MacombMarineParts.com before you buy — we're available via text, email, or online chat to help verify compatibility for your specific application.

MacombMarineParts.com is not liable for parts ordered based on assumed fitment. Returns due to buyer-selected incorrect fitment are subject to our standard return and restocking fee policies.