


FUELAB Pro Series 40-80PSI Max Flow Regulator - 56504-1
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
FUELAB Pro Series 40-80PSI Max Flow Regulator - 56504-1Description 10AN Inlets 10AN Return XL Seat EFI (40 80 PSID) Regulator Features Two 10AN inlet ports and one 10AN return port 1. 75 sized diaphragm with 1 2 return orifice Gasoline, diesel, methanol, and ethanol fuel compatible Billet Aluminum with anodize per military MIL A 8625, Type II Fine thread pitch for precise pressure adjustment Versatile mounting bracket and stainless steel hardware 1 8 NPT gauge port with plug for external pressure gauge 1
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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.
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★★★★★ 5
Good but
Size: 40-50 HP
Bought and installed about a year ago. Fit exactly right and still holding up. Would buy again.
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Reviewed in the United States on May 2, 2026
★★★★★ 5
Oem quality, great kit
Size: 35-60 HP
Oem quality kit , got me back on the water,diy
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Reviewed in the United States on May 2, 2026
★★★★★ 1
DO NOT BUY THIS GARBAGE
Size: 20-35 HP
DO NOT BUY. Stopped working after 2nd trip total of 2 hours use. Not returnable after 30 days. Could easily ruin your engine. Expensive garbage.
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Reviewed in the United States on March 19, 2026
★★★★★ 5
Looks very good quality to me.
Size: 85-300 HP
Everything looks good quality to me. I find it odd that the people leaving bad reviews with pictures of broken and melted impeller, when you can clearly see the brass on the inside is brown and dirty like old pennies and mine is shiny new. It's almost like the took the pictures of the ones they replaced to get a refund and a free repair kit.
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Reviewed in the United States on April 26, 2026
★★★★★ 5
Great quality and price
Perfect fit. Received quicker than boat shop
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Reviewed in the United States on June 22, 2025