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Fel-Pro 1143 - Fel-Pro PermaTorque Multi-Layer Steel Head Gaskets



Fel-Pro 1143 - Fel-Pro PermaTorque Multi-Layer Steel Head Gaskets

Part Number: 375-1143

PermaTorque MLS Head Gasket
  • Small Block Chevy
  • Gasket Bore: 4.165''
  • Compressed Thickness: .041''
  • Compressed Volume: 9.2cc
  • $67.17
    Ships
    Made In USA

    Fel-Pro 1143 - Fel-Pro PermaTorque Multi-Layer Steel Head Gaskets Details

    Small Block Chevy

    Steam holes for use on 400ci blocks

    Specifications:

    Bore (in.)
    4.165
    Bore (mm)
    105.791
    Compressed Thickness (in.)
    0.041
    Compressed Volume (cc)
    9.154
    Lock Wire
    No
    Quantity
    Sold individually
    Gasket Material
    Multi-layer steel
    Manufacturer's Part Number:
    1143

    Modern Cylinder Heads Require a New Type of Gasket

    Why use a Fel-Pro Multi-Layer Steel Cylinder Head Gasket? Because more power per cylinder, higher operating temperatures, and thinner head and block castings demand a modified gasket. MLS Gaskets are stronger, more forgiving, and capable of sealing despite movement between the head and block. Such motion results from: lighter, thinner aluminum head castings that are more susceptible to thermal expansion; computer controls that can dramatically increase engine output; reduced clamping force that prevents stress points and cylinder bore distortion.

    MLS Technology was developed to overcome sealing challenges. The number of layers in an MLS Gasket ranges from two to five, depending on the engine's sealing characteristics. Generally, the more layers, the more motion the gasket endures. There are multiple solid layers of heat-treated stainless steel separated by a very thin rubber coating, and the layers are either active (absorbing motion between the head and block) or shim (giving the gasket its correct compressed thickness). Gaskets are sold each.

    Features
  • Stainless steel maintains shape
  • Survives higher combustion pressure
  • Withstands "scrubbing" between head and block
  • Functions at a wider range of operating temperatures
  • Strategically-placed sealing beads eliminate leak paths
  • "Stopper" layer provides superior primary combustion seal

    Additional Information

    Click Here

  • Does this fit your vehicle?

    Narrow Results

    1976 CHEVROLET MALIBU

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8

    1974 CHEVROLET CAPRICE

    • Liter: 6.6
    • SubModel: CLASSIC
    • CUI: 400
    • EngineType: V8

    1975-1980 CHEVROLET G30 VAN

    • Liter: 6.6
    • EngineType: V8
    • SubModel: SPORTVAN

    1973-1974 CHEVROLET CAPRICE

    • Liter: 6.6
    • SubModel: ESTATE
    • CUI: 400
    • EngineType: V8

    1977 CHEVROLET P10 VAN

    • Liter: 6.6
    • EngineType: V8
    • SubModel: BASE

    1975-1979 CHEVROLET BLAZER K5

    • Liter: 6.6
    • EngineType: V8
    • SubModel: BASE

    1974 CHEVROLET MALIBU

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8

    1975 CHEVROLET IMPALA

    • Liter: 6.6
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: M
    • CUI: 400
    • EngineType: V8

    1970-1972 CHEVROLET KINGSWOOD

    • Liter: 6.6
    • SubModel: ESTATE
    • CUI: 400
    • EngineType: V8

    1970-1972 CHEVROLET CAPRICE

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8

    1975-1976 CHEVROLET MONTE CARLO

    • Liter: 6.6
    • EngineType: V8
    • SubModel: BASE

    1974-1976 CHEVROLET EL CAMINO

    • Liter: 6.6
    • EngineType: V8
    • SubModel: BASE

    1976 CHEVROLET IMPALA

    • Liter: 6.6
    • EngineType: V8
    • SubModel: BASE

    1976 CHEVROLET G10 VAN

    • Liter: 6.6
    • EngineType: V8
    • SubModel: BASE

    1975 CHEVROLET MALIBU

    • Liter: 6.6
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: M
    • CUI: 400
    • EngineType: V8

    1972 CHEVROLET BROOKWOOD

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8

    1974 CHEVROLET IMPALA

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8

    1976-1980 CHEVROLET C20 PICKUP

    • Liter: 6.6
    • EngineType: V8
    • SubModel: BASE

    1970-1971 CHEVROLET CHEVELLE

    • CC: 6555
    • Liter: 6.6
    • SubModel: MALIBU
    • EngineType: V8

    1974 CHEVROLET MONTE CARLO

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8

    1975 CHEVROLET LAGUNA

    • Liter: 6.6
    • EngineType: V8
    • SubModel: BASE

    1975-1976 CHEVROLET CAPRICE

    • Liter: 6.6
    • EngineType: V8
    • SubModel: ESTATE

    1975-1979 CHEVROLET K10 SUBURBAN

    • Liter: 6.6
    • EngineType: V8
    • SubModel: BASE

    1974 CHEVROLET MALIBU

    • Liter: 6.6
    • SubModel: ESTATE
    • CUI: 400
    • EngineType: V8

    1976 CHEVROLET P30 VAN

    • Liter: 6.6
    • EngineType: V8
    • SubModel: BASE

    1970 CHEVROLET EL CAMINO

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8

    1971 CHEVROLET CHEVELLE

    • CC: 6555
    • Liter: 6.6
    • SubModel: SS
    • EngineType: V8

    1979-1980 CHEVROLET C10 PICKUP

    • Liter: 6.6
    • EngineType: V8
    • SubModel: BASE

    1970 CHEVROLET CHEVELLE

    • CC: 6555
    • Liter: 6.6
    • SubModel: BASE
    • EngineType: V8

    1976 CHEVROLET IMPALA

    • Liter: 6.6
    • SubModel: CUSTOM
    • CUI: 400
    • EngineType: V8

    1970 CHEVROLET CHEVELLE

    • CC: 6555
    • Liter: 6.6
    • SubModel: NOMAD
    • EngineType: V8

    1970 CHEVROLET CHEVELLE

    • CC: 6555
    • Liter: 6.6
    • SubModel: GREENBRIER
    • EngineType: V8

    1970 CHEVROLET CHEVELLE

    • CC: 6555
    • Liter: 6.6
    • SubModel: CONCOURS
    • EngineType: V8

    1975-1980 CHEVROLET K20 PICKUP

    • Liter: 6.6
    • EngineType: V8
    • SubModel: BASE

    1975-1980 CHEVROLET K20 SUBURBAN

    • Liter: 6.6
    • EngineType: V8
    • SubModel: BASE

    1974 CHEVROLET LAGUNA

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8

    1976 CHEVROLET CAPRICE

    • Liter: 6.6
    • SubModel: CLASSIC
    • CUI: 400
    • EngineType: V8

    1974 CHEVROLET BEL AIR

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8

    1970 CHEVROLET BEL AIR

    • CC: 6556
    • Liter: 6.6
    • SubModel: BASE
    • EngineType: V8

    1977-1980 CHEVROLET K30 PICKUP

    • Liter: 6.6
    • EngineType: V8
    • SubModel: BASE

    1975-1980 CHEVROLET G20 VAN

    • Liter: 6.6
    • EngineType: V8
    • SubModel: BASE

    1970-1972 CHEVROLET KINGSWOOD

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8

    1975-1976 CHEVROLET MALIBU

    • Liter: 6.6
    • EngineType: V8
    • SubModel: ESTATE

    1975 CHEVROLET BEL AIR

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8

    1970 CHEVROLET EL CAMINO

    • Liter: 6.6
    • SubModel: CUSTOM
    • CUI: 400
    • EngineType: V8

    1970-1973 CHEVROLET MONTE CARLO

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8

    1975-1980 CHEVROLET K10 PICKUP

    • Liter: 6.6
    • EngineType: V8
    • SubModel: BASE

    1976 CHEVROLET G10 VAN

    • Liter: 6.6
    • EngineType: V8
    • SubModel: SPORTVAN

    1973 CHEVROLET CAPRICE

    • Liter: 6.6
    • SubModel: CLASSIC
    • CUI: 400
    • EngineType: V8

    1974 CHEVROLET MALIBU

    • Liter: 6.6
    • SubModel: CLASSIC
    • CUI: 400
    • EngineType: V8

    1976-1978 CHEVROLET C10 PICKUP

    • Liter: 6.6
    • EngineType: V8
    • SubModel: CHEYENNE

    1970 CHEVROLET BROOKWOOD

    • CC: 6556
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8

    1975-1980 CHEVROLET G20 VAN

    • Liter: 6.6
    • EngineType: V8
    • SubModel: SPORTVAN

    1971-1973 CHEVROLET BEL AIR

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8

    1970-1972 CHEVROLET TOWNSMAN

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8

    1976-1979 CHEVROLET C30 PICKUP

    • Liter: 6.6
    • EngineType: V8
    • SubModel: BASE

    1976 CHEVROLET LAGUNA

    • Liter: 6.6
    • EngineType: V8
    • SubModel: S3

    1975-1980 CHEVROLET G30 VAN

    • Liter: 6.6
    • EngineType: V8
    • SubModel: BASE

    1980 CHEVROLET C10 PICKUP

    • Liter: 6.6
    • EngineType: V8
    • SubModel: BIG TEN

    1975-1976 CHEVROLET MALIBU

    • Liter: 6.6
    • SubModel: CLASSIC
    • CUI: 400
    • EngineType: V8

    1974 CHEVROLET EL CAMINO

    • Liter: 6.6
    • EngineType: V8
    • SubModel: CUSTOM

    1976-1980 CHEVROLET C20 SUBURBAN

    • Liter: 6.6
    • EngineType: V8
    • SubModel: BASE

    1975 CHEVROLET CAPRICE

    • Liter: 6.6
    • SubModel: CLASSIC
    • CUI: 400
    • EngineType: V8

    1970-1973 CHEVROLET IMPALA

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8

    1970-1972 CHEVROLET BISCAYNE

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8
    1143 - Fel-Pro PermaTorque Multi-Layer Steel Head Gaskets is rated 3.0 out of 5 by 2.
    • 2016-08-26T08:44CST
    • bvseo_cps, prod_bvrr, vn_cps_3.3.0
    • cp_1, bvpage1
    • co_hasreviews, tv_0, tr_2
    • loc_en_US, sid_10001_10001_198756, PRD, sort_relevancy
    • clientName_jegs
    Rated 5 out of 5 by from sbc mls Got them a few weeks ago. Good shape no flaws. Pro tip for people using any MLS gasket, the block and heag surface have to be perfectly machined flat and as smooth as possible, or leaks may occur. Small lather of Permatex doesn't hurt also.
    Date published: 2016-04-06
    Rated 1 out of 5 by from Horrible MLS Fel Pro Gasket Horrible, I have less then a hour on my recently built 400 and I have to take apart because oil is leaking between the layers of the gasket. Did research online and found I am not the only one with this problem. Will never used again.
    Date published: 2014-12-25
    • 2016-08-26T08:44CST
    • bvseo_cps, prod_bvrr, vn_cps_3.3.0
    • cp_1, bvpage1
    • co_hasreviews, tv_0, tr_2
    • loc_en_US, sid_10001_10001_198756, PRD, sort_relevancy
    • clientName_jegs
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