Michigan Motorsports MLS head gasket box for LS1/LS6 engines, ready for OEM-style replacement
MLS gasket layers close-up showing precise multi-layer steel construction
LS engine block fit image illustrating direct replacement compatibility
GM 12589226 replacement reference demonstrates seamless engine compatibility
Gasket with heat-resistant design thriving in high-temperature engine environments
Corrosion-resistant MLS sealing for long-term reliability in extreme conditions
OEM-direct replacement keeps LS engines stock-fit without modification
MLS head gaskets supporting high compression and performance builds
MLS head gasket designed for daily drivers and race applications
Michigan Motorsports MLS head gasket box for LS1/LS6 engines, ready for OEM-style replacement
MLS gasket layers close-up showing precise multi-layer steel construction
LS engine block fit image illustrating direct replacement compatibility
GM 12589226 replacement reference demonstrates seamless engine compatibility
Gasket with heat-resistant design thriving in high-temperature engine environments
Corrosion-resistant MLS sealing for long-term reliability in extreme conditions
OEM-direct replacement keeps LS engines stock-fit without modification
MLS head gaskets supporting high compression and performance builds
MLS head gasket designed for daily drivers and race applications

Michigan Motorsports LS1 LS6 MLS Head Gasket – 4.8L / 5.3L / 5.7L LS Engines | OEM Replacement 12589226

Enhance sealing reliability with the Michigan Motorsports LS1 LS6 MLS Head Gaskets, built for LS based engines...
Vendor: Michigan Motorsports
Availability: In stock
£119.93
£119.93
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Michigan Motorsports MLS head gasket box for LS1/LS6 engines, ready for OEM-style replacement

Michigan Motorsports LS1 LS6 MLS Head Gasket – 4.8L / 5.3L / 5.7L LS Engines | OEM Replacement 12589226

£119.93
Michigan Motorsports MLS head gasket box for LS1/LS6 engines, ready for OEM-style replacement
MLS gasket layers close-up showing precise multi-layer steel construction
LS engine block fit image illustrating direct replacement compatibility
GM 12589226 replacement reference demonstrates seamless engine compatibility
Gasket with heat-resistant design thriving in high-temperature engine environments
Corrosion-resistant MLS sealing for long-term reliability in extreme conditions
OEM-direct replacement keeps LS engines stock-fit without modification
MLS head gaskets supporting high compression and performance builds
MLS head gasket designed for daily drivers and race applications

Michigan Motorsports LS1 LS6 MLS Head Gasket – 4.8L / 5.3L / 5.7L LS Engines | OEM Replacement 12589226

£119.93
Description
Description
x

Enhance sealing reliability with the Michigan Motorsports LS1 LS6 MLS Head Gaskets, built for LS based engines in the 4.8L, 5.3L, and 5.7L family. The multi-layer steel construction delivers consistent sealing across the bore, helping you approach rebuilds, upgrades, or performance tweaks with confidence. This gasket line is designed to perform under demanding conditions while staying true to GM style fitment and OEM intent.

MLS technology and material advantages

  • Multi-layer steel construction creates uniform sealing pressure for robust resistance to leaks.
  • Engineered to withstand higher temperatures and resist corrosion for long term reliability.
  • Quality you can trust, aiming to match GM specifications for a seamless replacement.

Fitment, specs, and compatibility

  • Designed for 4.8L, 5.3L, and 5.7L LS engines, including LS1 and LS6 variants, with a 3.940 inch bore diameter.
  • Direct replacement for GM part number 12589226, enabling straightforward installation without major modifications.
  • Suitable for stock builds as well as high compression and forced induction applications where sealing matters.

Performance and real world durability

  • Maintains a tight seal under high load, helping protect against leaks during demanding driving scenarios.
  • Heat and corrosion resistance support long term sealing integrity in extreme operating conditions.
  • Built to endure repeated engine cycles, making it a solid option for daily drivers and performance projects alike.

What you gain

  • OEM-quality replacement that fits LS engines with minimal fuss.
  • Supports higher compression and performance builds while maintaining sealing reliability.
  • Trusted by engine builders and LS enthusiasts for everyday driving and race-ready setups.

Consider this MLS gasket as a strategic part of an engine rebuild or upgrade plan. It offers a viable path to reliable sealing without locking you into a single operating condition, keeping options open for a range of LS engine projects.

FAQ

Q: What engines does this MLS head gasket fit?

A: Fits 4.8L, 5.3L, and 5.7L LS engines using GM part 12589226.

Q: Is this a direct replacement for factory gaskets?

A: Yes, it is designed as a direct GM 12589226 replacement with straightforward installation.

Shipping & Return
Shipping & Return
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Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

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When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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