★★★★★ 5
Durability
Size: 100-Foot, Style: 14-Gauge
Great wire. Works perfectly
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Reviewed in the United States on April 3, 2026
SPA TURBO 10-100 PSI Billet adjustable FMU - Blue
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
SPA TURBO 10-100 PSI Billet adjustable FMU - BlueEthanol and Methanol compatible and SAFE Easy installation FMU (Fuel Management Unit) has an adjustable, boost referenced 1: 14 raising rate Fine tune the fuel pressure your engine will need while under boost. 2x 6AN (9 16" 18tpi) inlet and 6AN (9 16" 18tpi)outlet fuel ports 1 4" boost reference port Includes accessories: O. D. 8 mm, O. D. and 6AN (for return only) Adjustable from 10 psi to 100 psi fuel pressure All SPA Turbo FMUs can also be used as
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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]
- Please click here for more details>>> Return & Exchange Policy
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4.7 ★★★★★
Based on 1094 reviews
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Product Reviews
★★★★★ 5
Nice quality
Had to return due to our mistake but the mechanic said it was good quality. Ordered the correct size and worked great.
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Reviewed in the United States on March 30, 2025
★★★★★ 5
Perfect fit
Worked great for a 1965 mercury thunderbolt 150hp
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Reviewed in the United States on June 3, 2025
★★★★★ 5
MerCruiser Replacement Parts
OEM quality MerCruiser Alpha 1 Gen1 replacement part. Everything you need and some things you don't because it's a universal kit that works for several models.
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Reviewed in the United States on July 19, 2025
★★★★★ 5
OEM is always the answer
No reason not to go OEM for this! Came with every possible gasket and seal I could need. Specifically for my Alpha One Gen 1 it took maybe 25-30 min to completely install.
While you’re there check the base plate for wear and the other surrounding items like your water tube. Rather keep the lower unit off for an extra day to get another part than a catastrophic failure.
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Reviewed in the United States on September 9, 2025
