★★★★★ 5
Love it
Style: Gloss Black Single Slat, Size: E90（2009-2011）
Worked great and looks awesome
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 7, 2026
Sierra Lower Unit Seal Kit OMC - 18-2791, 0987251, 3850597
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
Sierra Lower Unit Seal Kit OMC - 18-2791, 0987251, 3850597Item#: 18 2791 Lower Unit Seal Kit OMC OEM#: 0987251, 3850597 Brand: Sierra FITMENTS: Make Model Year(s) OMC I O ALL
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Your Sierra Lower Unit Seal Kit OMC - 18-2791, 0987251, 3850597 orders ship within 1-2 business days.
Delivery Options:
- 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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Sort
Product Reviews
★★★★★ 5
Perfect OEM Fit in Seconds!
Style: Gloss Black Single Slat, Size: E46（1999-2002）2-Door, Style: Gloss Black Single Slat, Size: E46（1999-2002）2-Door
Perfect OEM Fit in 2 seconds!! I’m surprised and Happy and it looks Perfect on my BMW 2002 330ci
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 14, 2026
★★★★★ 3
Check engine light
Style: Gloss Black Single Slat, Size: G20（2019-2022）, Style: Gloss Black Single Slat, Size: G20（2019-2022）
Looks good but will throw a check engine light on your car. The fitment isn’t perfect causing the adaptive vents to show that they are failing even though they are not
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 7, 2026
★★★★★ 5
Quick fix
Style: Gloss Black Single Slat, Size: E46（2002-2005）4-Door
Easily Installed with no modification in under a minute. The finish was a little glossier, then OE.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 28, 2026
★★★★★ 5
Exact Fit for 2001 BMW 325CI Convertible
Style: Gloss Black Single Slat, Size: E46（1999-2002）2-Door, Style: Gloss Black Single Slat, Size: E46（1999-2002）2-Door
Perfect fit for a 2001 BMW 325CI convertible.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 8, 2026
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