★★★★★ 3
Ok
Not bad not great. Quality feels cheap.
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Reviewed in the United States on December 30, 2025
Nitrous Outlet Billet .508 ID Valve With 5lb Bottle Siphon Tube
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
Nitrous Outlet Billet .508 ID Valve With 5lb Bottle Siphon TubeFlows up to 800HP . 508" orifice For 5lb Nitrous Bottles (2) 1 8th NPT accessory ports CNC Machined Billet Aluminum High Flow Valve: Nitrous Outlet bottle valves are race proven to flow up to 800HP of nitrous thanks to the generous . 508" opening from siphon tube to nipple! It is the worlds largest orifice within a traditional seat valve. The 45 valve includes two 1 8NPT accessory ports for gauges, switches, or sensors. This valve also has a port for
Quick Dispatch:
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Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
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4.8 ★★★★★
Based on 243 reviews
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Product Reviews
★★★★★ 5
Lower unit water pump
Worked fine
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 16, 2025
★★★★★ 5
Great value and working started
Great starter. I had ordered a cheaper option before this and it just hold up. When this one arrived I could tell I made the right decision right out of the box. It looked, felt and worked like the OEM one. No shims just a good working starter. Spend a few extra bucks and save time.
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Reviewed in the United States on May 24, 2026
★★★★★ 5
Perfect fit for 5.7 Mercruiser
Great fit for mercruiser 5.7
Have had it installed for about 6 months and still working great!
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Reviewed in the United States on May 17, 2026
★★★★★ 5
Great Buy!!! 5-Star!!!
Bolted up! Boat starts like the original starter! Great Buy!!!
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Reviewed in the United States on April 1, 2026
