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Wilwood Proportioning Valve - Knob Adjust M10x1 BBF Inlet & Outlet

Marsoni M251S
Sale price$48.44
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Get it in 3 business days with 1 day shipping. Friday, May 29
Wilwood Proportioning Valve - Knob Adjust M10x1 BBF Inlet & OutletThe new generation of adjustable proportioning valves combines the latest refinements to deliver precise pressure metering and strength from a compact forged billet design. Pressure adjustments range from 100 1000 PSI and provide for a maximum decrease of 57% in line pressure, the most of any available valve. Adjuster knob with fine thread tuning provides precise pressure adjustment. This adjustment lets you fine tune the front to rear braking balance
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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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4.8 ★★★★★
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Rick
Massapequa, US
★★★★★ 5
Great fitment
Nice fitment
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 15, 2025
L
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Lauren Drennan
Fort Morgan, US
★★★★★ 2
F250 cabin filter change
Too thick. Air flow decreased significantly which is terrible in the AZ heat!
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Reviewed in the United States on July 27, 2025
D
Verified Purchase
Dale
Charlottesville, US
★★★★★ 5
Clean filtered air
Installed easy. works great. Clean filtered air.
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Reviewed in the United States on July 21, 2025
A
Verified Purchase
Amazon Customer
Boise, US
★★★★★ 5
Great price
Both filters fit and worked and had a great price.
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Reviewed in the United States on March 15, 2026
M
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maria sames
San Leandro, US
★★★★★ 5
Better then oem
Great product quality is definitely a plus had no issues. Been buying these for 3 years.
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Reviewed in the United States on November 19, 2025

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