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Description
Mercury-Mercruiser 55278A5 DIAPHRAGM KITMercury Mercruiser 55278A5 DIAPHRAGM KIT
Mercury-Mercruiser 55278A5 DIAPHRAGM KIT
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4.5 ★★★★★
Based on 11 reviews
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Product Reviews
★★★★★ 5
BMW F25
Saved me when tried to change the oil. Great price
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
★★★★★ 5
Un buen precio
Color: Silver
Quedó bien
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Reviewed in the United States on March 20, 2026
★★★★★ 1
Not as described does not fit
Color: Silver
Not as described does not fit no good
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Reviewed in the United States on May 3, 2026
★★★★★ 4
Do one oil change myself and it’s more than paid for.
Color: Silver, Color: Silver
It is 74 mm. It’s nicely made of cast aluminum. It has a rough cast finish so it shouldn’t be difficult to hold on to. It does fit my Lexus filter and the price is very reasonable. It also fits the oil filter on my 1999 (antique) Harley Davidson Heritage Classic. Which is the primary reason I ordered it. I don’t know this for certain but I suspect it will fit all HD EVO engines. That would be 1984 through 1998 except the Heritage which didn’t change to the 88 Twin Cam until 2000.
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Reviewed in the United States on December 18, 2025
★★★★★ 1
Didnt fit my C300
Color: Silver
Didn’t fit my 2008 Mercedes C300 4matic sport.
I bought another one on Amazon from a different company and it did fit. Eochi or something brand.
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Reviewed in the United States on December 6, 2025
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