Fel-Pro PermaTorque Multi-Layer Steel Head Gaskets Product images may differ from actual product appearance. The new breed of cylinder heads requires a new breed of gaskets.   Fel-Pro Multi-Layer Steel (MLS) Head Gaskets feature: Full-hard, stainless steel maintains shape Withstands ''scrubbing'' between head and block Survives higher combustion pressures Functions at a wider range of operating temperatures Strategically-placed sealing beads eliminate leak paths "Stopper'' layer provides superior primary combustion seal So, why use a Fel-Pro multi-layer steel (MLS) head gasket? Because more power per cylinder, higher operating temperatures, and thinner head and block castings demand a new kind of gasket. MLS gaskets are stronger, more forgiving, and capable of sealing despite extreme horizontal and vertical motion between the head and block. Such motion results from thinner, lighter aluminum head castings that are more susceptible to thermal expansion; modern computer controls that allow OEMs to dramatically increase engine efficiency/output; reduced clamping forces that prevent local 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 layers (giving the gasket its correct compressed thickness). Additional Information Click Here *Sold 1 per package

375-1142

PermaTorque MLS Head Gasket SB-Chevy 4.000'' to 4.100'' Compressed thickness .041" Compressed volume 9.0cc View this item Fits Applications

Was: $77.99 Now: $72.99 Ships

375-1143

PermaTorque MLS Head Gasket SB-Chevy 4.101'' to 4.165'' Compressed thickness .041" Compressed volume 9.2cc View this item Fits Applications

Was: $93.99 Now: $88.99 Ships

375-1144

PermaTorque MLS Head Gasket SB-Chevy 4.167'' to 4.200'' Compressed thickness .041" Compressed volume 9.3cc View this item Fits Applications

Was: $95.99 Now: $90.99 Ships

375-1144-053

PermaTorque MLS Head Gasket SB-Chevy 4.167'' to 4.200'' Compressed thickness .053" Compressed volume 11.9cc View this item Fits Applications

Was: $81.99 Now: $76.99 Ships

375-1144-061

PermaTorque MLS Head Gasket SB-Chevy 4.167'' to 4.200'' Compressed thickness .061" Compressed volume 13.9cc View this item Fits Applications

Was: $85.99 Now: $80.99 Ships

375-1144-071

PermaTorque MLS Head Gasket SB-Chevy 4.167'' to 4.200'' Compressed thickness .071" Compressed volume 16.1cc View this item

$109.99 Manufacturer's Availability Date Unknown

375-17030

PermaTorque MLS Head Gasket SB-Chevy Marine 4.125" Compressed thickness .039" Compressed volume 8.7cc View this item

$41.99 Ships

375-17031

PermaTorque Head Gasket SB-Chevy Marine 4.200" Compressed thickness .039" Compressed volume 9.0cc View this item

$47.99 Ships

375-1160L

PermaTorque MLS Head Gasket Chevy LS1, Left 3.945'' Compressed thickness .053" Compressed volume 10.6cc View this item Fits Applications

Was: $87.99 Now: $82.99 Ships

375-1160R

PermaTorque MLS Head Gasket Chevy LS1, Right 3.945'' Compressed thickness .053" Compressed volume 10.6cc View this item Fits Applications

Was: $87.99 Now: $82.99 Ships

375-1161L

PermaTorque MLS Head Gasket Chevy LS1, Left 4.100'' Compressed thickness .053" Compressed volume 11.5cc View this item Fits Applications

Was: $95.99 Now: $90.99 Ships

375-1161L041

PermaTorque MLS Head Gasket Chevy LS1, Left 4.100'' Compressed thickness .041" Compressed volume 8.2cc View this item

$106.99 Ships

375-1161R

PermaTorque MLS Head Gasket Chevy LS1, Right 4.100'' Compressed thickness .053" Compressed volume 11.5cc View this item Fits Applications

Was: $95.99 Now: $90.99 Ships

375-1161R041

PermaTorque MLS Head Gasket Chevy LS1, Right 4.100'' Compressed thickness .041" Compressed volume 8.2cc View this item

$109.99 Ships

375-1162L

PermaTorque MLS Head Gasket Chevy LS1, Left 4.175'' Compressed thickness .053" Compressed volume 11.9cc View this item Fits Applications

$96.99 Ships

375-1162L041

PermaTorque MLS Head Gasket Chevy LS1, Left 4.175'' Compressed thickness .041" Compressed volume 9.2cc View this item

$92.99 Ships

375-1162R

PermaTorque MLS Head Gasket Chevy LS1, Right 4.175'' Compressed thickness .053" Compressed volume 11.9cc View this item Fits Applications

$96.99 Ships

375-1162R041

PermaTorque MLS Head Gasket Chevy LS1, Right 4.175'' Compressed thickness .041" Compressed volume 9.2cc View this item

$89.99 Ships

375-1071

PermaTorque MLS Head Gasket BB-Chevy 4.250'' to 4.380'' Compressed thickness .041" Compressed volume 10.6cc View this item Fits Applications

Was: $81.99 Now: $76.99 Ships

375-1071-1

PermaTorque MLS Head Gasket BB-Chevy 4.250'' to 4.380'' Compressed thickness .053" Compressed volume 13.7cc View this item Fits Applications

Was: $99.99 Now: $94.99 Ships

375-1077

PermaTorque MLS Head Gasket BB-Chevy 4.581'' to 4.640'' Compressed thickness .041" Compressed volume 11.4cc View this item Fits Applications

Was: $99.99 Now: $94.99 Ships

375-1077-1

PermaTorque MLS Head Gasket BB-Chevy 4.581'' to 4.640'' Compressed thickness .053" Compressed volume 14.8cc View this item Fits Applications

Was: $119.99 Now: $114.99 Ships

375-8523PT-1

PermaTorque MLS Head Gasket 1966-2000 Chevy 366/427/454 View this item Fits Applications

$19.99 Ships

375-1075

PermaTorque MLS Head Gasket BB-Chevy Marine 4.580'' Compressed thickness .041" Compressed volume 11.2cc View this item Fits Applications

Was: $81.99 Now: $76.99 Ships

375-1075-1

PermaTorque MLS Head Gasket BB-Chevy Marine 4.580" Compressed thickness .053" Compressed volume 14.5cc View this item Fits Applications

$91.99 Ships

375-17040

PermaTorque MLS Head Gasket BB-Chevy Mark IV Marine 4.370'' Compressed thickness .039" Compressed volume 9.7cc View this item

$49.99 Ships

375-17049

PermaTorque MLS Head Gasket BB-Chevy Marine 4.630" Compressed thickness .039" Compressed volume 10.8cc View this item

$61.99 Ships

375-1133

PermaTorque MLS Head Gasket SB-Ford 4.000'' to 4.100'' Compressed thickness .041" Compressed volume 9cc View this item Fits Applications

Was: $92.99 Now: $87.99 Ships

375-1134

PermaTorque MLS Head Gasket SB-Ford 4.101'' to 4.175'' Compressed thickness .041" Compressed volume 9.2cc View this item Fits Applications

Was: $75.99 Now: $70.99 Ships

375-1135

PermaTorque MLS Head Gasket SB-Ford 4.210'' Compressed thickness .041" Compressed volume 9.4cc View this item Fits Applications

Was: $75.99 Now: $70.99 Ships

375-1137

PermaTorque MLS Head Gasket SB-Ford 4.210'' Compressed thickness .053" Compressed volume 12.3cc View this item Fits Applications

$82.99 Ships

375-17060

PermaTorque MLS Head Gasket 351W Marine 4.080" Compressed thickness .049" Compressed volume 10.4cc View this item

$46.99 Ships 02/21/12

375-1141-L

PermaTorque MLS Head Gasket Ford 4.6L and 5.4L, left side 3.630" Compressed thickness .036" Compressed volume 6.1cc View this item Fits Applications

$49.99 Ships

375-1141-R

PermaTorque MLS Head Gasket Ford 4.6L and 5.4L, right side 3.630" Compressed thickness .036" Compressed volume 6.1cc View this item Fits Applications

$49.99 Ships