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  • 7-Layer 5.3L 4.8L Small Bore MLS Head Gasket Pair for Boosted Nitrous Turbo Supercharged 4.8 5.3 LS
  • 7-Layer 5.3L 4.8L Small Bore MLS Head Gasket Pair for Boosted Nitrous Turbo Supercharged 4.8 5.3 LS
  • 7-Layer 5.3L 4.8L Small Bore MLS Head Gasket Pair for Boosted Nitrous Turbo Supercharged 4.8 5.3 LS
  • 7-Layer 5.3L 4.8L Small Bore MLS Head Gasket Pair for Boosted Nitrous Turbo Supercharged 4.8 5.3 LS
  • 7-Layer 5.3L 4.8L Small Bore MLS Head Gasket Pair for Boosted Nitrous Turbo Supercharged 4.8 5.3 LS

    • 7-Layer 5.3L 4.8L Small Bore MLS Head Gasket Pair for Boosted Nitrous Turbo Supercharged 4.8 5.3 LS

    Michigan Motorsports

    $139.99
    (4 reviews) Write a Review
    SKU:
    MM-Smallbore5.3-pair
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    Product Description

    Michigan Motorsports Small-Bore 7-Layer MLS Head Gaskets – 4.8L 5.3L LS

    Fits 1999–2013 4.8L & 5.3L Engines | 3.940" Bore | .055" Thickness | Sold in Pairs

    Michigan Motorsports Small-Bore 7-Layer MLS Head Gaskets are engineered for serious 4.8L and 5.3L LS builds. Utilizing the same proven sealing technology found in the robust LS9 head gaskets, these multi-layer steel gaskets are ideal for boosted or nitrous combinations—especially aluminum block applications where the LS9 fire ring can sit too close to the sleeve edge. With a 3.940" bore diameter and .055" compressed thickness, these gaskets provide exceptional combustion sealing and durability. When paired with ARP head studs and a proper tune-up, they will easily support 1000+ horsepower. Sold as a pair.

    Key Features & Benefits

    • 7-Layer MLS Construction – Multi-layer steel design delivers superior sealing strength under high cylinder pressures, making them ideal for turbocharged, supercharged, or nitrous-assisted LS engines.
    • LS9-Style Sealing Technology – Utilizes the same proven sealing approach found in LS9 gaskets, offering robust combustion sealing in high-performance applications.
    • Optimized Small Bore Design – 3.940" bore diameter is ideal for 4.8L and 5.3L engines, particularly aluminum block versions where larger bore gaskets can sit too close to the sleeve edge.
    • .055" Compressed Thickness – Maintains proper quench and compression characteristics for performance street and race builds.
    • High Horsepower Capable – Designed to support 1000+ horsepower when combined with ARP head studs and a proper tune-up.

    Notes & Important Information

    • Sold in pairs (one set for both cylinder heads).
    • Will not work on 1999–2001 heads with "notched" decks.
    • Not compatible with Trick Flow heads.
    • Recommended to use with ARP head studs for high-boost or nitrous applications.

    Key Fitments

    • 1999–2013 4.8L & 5.3L LS Engines
    • LM7 L59 LC9 LMG LR4 LM4 L33 LS4 LY2 L20 LY5 LMF LH6 LH8 LH9

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    • 5
      7 layer head gasket

      Posted by Brad Silvers on Oct 2nd 2025

      Very high quality head gasket

    • 5
      Excellent Service!

      Posted by Travis Nishimoto on Dec 30th 2024

      Much better dealing with Michigan MS then Summitt or jegs!!!! Trust me , helping me make my NBS Silverado build a breeze!!

    • 5
      LS

      Posted by Keegan Schuster on May 5th 2024

      Perfect Install And Great Quality

    • 5
      Not leaks

      Posted by Richard Baughman on Nov 10th 2022

      Can't wait to stick 15 lbs of boost down its throat