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LS LS1 Coolant / Steam Port Block Off Plate Set

Marsoni M251S
Sale price$29.99
Pay 4 payments of $7.50 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
LS LS1 Coolant / Steam Port Block Off Plate SetCoolant Steam Port Plugs Includes 2 coolant ports, 2 o rings, and 2 bolts Compatible with all GM LS series engines Can be installed on the front or rear of the cylinder heads Made in Wichita, Kansas from aerospace grade, USA produced, billet aluminum *These do NOT have holes for crossover tube attachment
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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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4.4 ★★★★★
Based on 703 reviews
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Verified Purchase
Laura Moreno
Alexandria, US
★★★★★ 5
Great
Had a splash guard come off my Honda and these were perfect and so easy to put the splash guard back on. They are very durable and good quality. I recommend these!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 27, 2026
M
Verified Purchase
Miriam Sariol
Los Angeles, US
★★★★★ 5
Easy to use
Kinda cool that it brings different size clips and the tool makes it easy to pull the clips out.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 28, 2025
S
Verified Purchase
Stephan F.
Belleville, US
★★★★★ 4
Fit as described
Used to install an inner fender liner. Seem a little more fragile than OEM, but suitable for the intended use and much less expensive.
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Reviewed in the United States on November 8, 2023
S
Verified Purchase
Shawn A Hughes
Grantham, US
★★★★★ 5
Fits well, good quality.
Good assortment for the price; clips fit well.
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Reviewed in the United States on March 10, 2026
H
Verified Purchase
Harold Monroe
Waukegan, US
★★★★★ 5
Good
Works great.
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Reviewed in the United States on January 11, 2026

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