


Aeromotive Pro-Series EFI Boost Reference Regulator
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
Aeromotive Pro-Series EFI Boost Reference RegulatorThe tuner s choice for high horsepower EFI applications. The Pro Series Regulator can support up to 2000 HP. For engines requiring high volume, high pressure fuel delivery, the Pro Series Boost Reference EFI Regulator is a perfect fit for serious power. Adjustable base pressure from 30 75 PSI with the spring installed. Adjustable base pressure from 75 125 PSI with the optional spring included. Ideal for Pro Series, Brushless 3. 5 and Brushless 5. 0
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- 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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4.5 ★★★★★
Based on 398 reviews
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Product Reviews
★★★★★ 5
Happy with purchase
Works as well at the fraction of the price. Very happy with the purchase. Very easy to install
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 11, 2025
★★★★★ 5
Great OEM replacement at hlaf the cost
Looks exactly like the OEM filter a quality product. it is the same size fit and performance. Filter replacement is fast 10 min tops, it's crazy how much a dealer charges to replace it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 15, 2025
★★★★★ 5
As good as Honda OEM
Perfect fit. Lasts as long as OEM for 25% of the price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 27, 2025
★★★★★ 5
Great fit
Perfect fit. FYI - I bought the exact same one on EBAY FOR $11.78
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Reviewed in the United States on May 2, 2026
★★★★★ 5
East
Easy to replace and great fit
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Reviewed in the United States on January 4, 2026
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