# Backflow Preventer Flap Assembly

Full listing title: Valve Flap Fasten-Water Backflow Preventer Flap Assembly for Marine Mechanics, Boat Owners

- SKU: DCD-10001335982
- Price: 18.09 USD (excludes sales tax; tax calculated at checkout). Price valid until 2026-10-31.
- Availability: In stock (20 available; up to 10 per order)
- Shipping: free standard shipping, United States only; delivered in 11-21 days from order (leaves the warehouse within 4 business days)
- Estimated delivery if ordered today (2026-10-01): 2026-10-12 to 2026-10-22
- Returns: 30 days from delivery for unused items in original packaging; customer pays return shipping unless the item is damaged, defective or not as described; refund to the original payment method within 5 business days of receiving the return (https://suntekstore.com/returns/)
- Category: Boating & Diving (Vehicles & Parts > Vehicle Parts & Accessories)
- Condition: new; brand: SuntekStore
- Package size: 25 x 22 x 3 cm (9.8 x 8.7 x 1.2 in)
- Weight: 0.40 kg (0.88 lb)
- Material: Rubber
- In the box: Valve Flap ×1
- Color: Black
- Structure: Two-wing flap unit
- Mounting: Long mounting plate with multiple round bolt holes along the top edge
- Surface design: Recessed rectangular rib sections

## Description

Primary Description: A premium replacement sterndrive flap with mounting plate designed specifically for compatible sterndrive Sterndrive 290 SP 852644 systems.
Primary Function: This marine water backflow preventer acts as a barrier to prevent water backflow into the engine exhaust system, ensuring smooth and
Special Features: The exhaust flap features a sturdy two-wing flap unit unified with a long mounting plate and multiple pre-drilled round bolt holes along the top edge for fit.
Essential Perks: This water backflow preventer flap assembly is engineered with recessed rectangular rib sections on the flap areas to provide enhanced structural strength and reliable performance.
Intended Purpose for routine maintenance and repairs, this water backflow preventer helps boat owners and marine mechanics keep compatible sterndrive engines in top condition running condition.

Keep your boat's propulsion system running smoothly with this premium sterndrive flap with mounting plate, designed specifically for compatible sterndrive Sterndrive 290 SP 852644 systems. This essential marine water backflow preventer serves as a barrier to prevent water backflow into your engine's exhaust system, protecting vital components from potential water damage during. Engineered for durability fit, the exhaust flap features a sturdy two-wing flap unit unified with a long mounting plate. The top edge is equipped with multiple pre-drilled round bolt holes, allowing marine mechanics and boat owners to achieve a secure, straightforward fasten-on installation during routine maintenance. This water backflow preventer flap assembly is designed with recessed rectangular rib sections across the flap areas, which strengthens its structural strength under pressure. Whether you are performing seasonal servicing or replacing a worn part, this water backflow preventer ensures your sterndrive engine remains reliable and ready for the water.

Option: Valve Flap for Volvo

## How to buy

Open https://suntekstore.com/buy/DCD-10001335982?qty=1 (change qty to 1-10). It redirects to Stripe Checkout; the shopper enters a US shipping address and pays there. No account or cart needed.

## Links

- Product page: https://suntekstore.com/p/DCD-10001335982/
- JSON: https://suntekstore.com/products/DCD-10001335982.json
- Image: https://suntekstore-img.sfo3.digitaloceanspaces.com/p/1e/1e2416f0eef83a57a5fa51042b2aad17fdfbd726.jpg
- Store policies: https://suntekstore.com/llms.txt