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Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8

Marsoni M251S
Sale price$163.60
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Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8Manley Severe Duty Valves deliver the ultimate in strength, reliability, and high performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH 428 for exhaust and NK 844 for intake), offering unmatched tensile strength compared to competitive alloys. In fatigue testing at 40,000 psi and 1400F, Manley exhaust valves endured 100 million cycles, while competitors failed after just
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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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4.3 ★★★★★
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Verified Purchase
Kevin Boynton
Belleville, US
★★★★★ 5
Works
Fit my 1996 xr6 150 just fine. Engine runs at correct temperature so they are working as they should.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 13, 2026
C
Verified Purchase
Champ
Bozeman, US
★★★★★ 5
Quick delivery
Fit like they should and seems to be working great
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 15, 2026
G
Verified Purchase
GINGER B.
Natrona Heights, US
★★★★★ 5
Great product
Great product
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Reviewed in the United States on December 30, 2025
C
Verified Purchase
chris s
Lexington, US
★★★★★ 5
Fit Mercury 150 saltwater 2 stroke great!
These fit my Mercury 150 perfect. Took it out for a test run and engine ran great with no overheating issues.
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Reviewed in the United States on August 26, 2025
R
Verified Purchase
Robert Werkhoven
Los Angeles, US
★★★★★ 5
Work’s okay
They work ok, as expected
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Reviewed in the United States on August 26, 2025

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