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LS Cylinder Head Freeze Plug Retainer Hold Down Billet Plate Turbo LS1 LQ4 LS3

Marsoni M251S
Sale price$87.99
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Get it in 3 business days with 1 day shipping. Friday, May 29
LS Cylinder Head Freeze Plug Retainer Hold Down Billet Plate Turbo LS1 LQ4 LS3LS Freeze Plug Retainer Plates Keep your cylinder head freeze plugs from blowing out when running turbochargers with high amounts of boost, potentially causing high internal cooling system pressures Made in Wichita Kansas from aerospace grade, USA produced, billet aluminum Compatible with all GM gen III and IV cylinder heads Includes 4 freeze plug retainers, and mounting bolts (enough for both cylinder heads front and rear) Install the retainer plates
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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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4.5 ★★★★★
Based on 507 reviews
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A
Verified Purchase
Andrew Addington
Massapequa, US
★★★★★ 5
Better Than OEM!
Style: Standard Air Filter
This filter looks and feels the same as one you would purchase from the dealer. It fits perfectly and feels premium. I will be purchasing more for future use.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 12, 2026
J
Verified Purchase
Juan Alicea
Carnegie, US
★★★★★ 5
Quality item
Style: Standard Air Filter
Works per fit fit for my 2010 Prius
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
T
Verified Purchase
TMan
Lake Worth, US
★★★★★ 5
I like it!
Style: Standard Air Filter
Awesome product, very sturdy and keeps the dirt out, would definitely recommend!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 1, 2025
D
Verified Purchase
Debra
Grantham, US
★★★★★ 5
My car can breathe!
Style: Standard Air Filter
I have improved car preferences.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 14, 2026
A
Verified Purchase
Andrew Whyne
Phoenix, US
★★★★★ 4
Fits fine
Style: Standard Air Filter
Item is a perfect fit. 2009 XB
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 24, 2026

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