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Mr. Gasket Ultra-Seal Header Gaskets 5950

Mr. Gasket Ultra-Seal Header Gaskets 5950
$67.99 ea
NEWARRIVING SOONEstimated Ship Date 12/24/2025 (If Ordered Today)64 Available from HOLLEY PERFORMANCE PRODUCTS as of 12/08/2025
Model: 4011880
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
STANDARD
DELIVERY
STORE PICKUP
[More Info]
Manufactured from high-temperature steel core/graphite faced exhaust material. Expanded steel core provides stability and maximum torque retention to eliminate gasket failure. Graphite facing provides excellent heat resistance and thermal conductivity to transfer heat away from the cylinder head. Conforms to and seals minor surface irregularities. High recovery material allows header or manifold flange to stay sealed if flange loses clamp-load. Can be trimmed if necessary for modified port applications. For original equipment replacement, high performance street, drag race and oval track use.
Features:
  • Has A Steel Core With Graphite Facing
  • Graphite Facing Has Excellent Thermo-conductivity
  • High Recovery Mat Allows For Better Seal Retention
  • Can Be Trimmed For Port Modifications
  • Expanded Steel Core For Stability

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Vehicle Fitment:

The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
Make Model Years Engine Fitment Notes
American Motors AMX 1970 6.4L / 390 / V8
5.9L / 360 / V8
ULTRA SEAL; EXHAUST GASKET SET; DOG LEG PORT; PORT DIMENSIONS W-1.25 IN. X H-1.75 IN.;
American Motors AMX 1978 5.0L / 304 / V8 ULTRA SEAL; EXHAUST GASKET SET; DOG LEG PORT; PORT DIMENSIONS W-1.25 IN. X H-1.75 IN.;
American Motors AMX 1979 5.0L / 304 / V8 ULTRA SEAL; EXHAUST GASKET SET; DOG LEG PORT; PORT DIMENSIONS W-1.25 IN. X H-1.75 IN.;
American Motors Ambassador 1970 5.0L / 304 / V8
5.9L / 360 / V8
6.4L / 390 / V8
ULTRA SEAL; EXHAUST GASKET SET; DOG LEG PORT; PORT DIMENSIONS W-1.25 IN. X H-1.75 IN.;
American Motors Ambassador 1971 5.0L / 304 / V8
6.6L / 401 / V8
ULTRA SEAL; EXHAUST GASKET SET; DOG LEG PORT; PORT DIMENSIONS W-1.25 IN. X H-1.75 IN.;
American Motors Ambassador 1972 5.0L / 304 / V8
6.6L / 401 / V8
ULTRA SEAL; EXHAUST GASKET SET; DOG LEG PORT; PORT DIMENSIONS W-1.25 IN. X H-1.75 IN.;
American Motors Ambassador 1973 5.0L / 304 / V8
6.6L / 401 / V8
ULTRA SEAL; EXHAUST GASKET SET; DOG LEG PORT; PORT DIMENSIONS W-1.25 IN. X H-1.75 IN.;
American Motors Ambassador 1974 5.0L / 304 / V8
6.6L / 401 / V8
ULTRA SEAL; EXHAUST GASKET SET; DOG LEG PORT; PORT DIMENSIONS W-1.25 IN. X H-1.75 IN.;
American Motors Concord 1978 5.0L / 304 / V8 ULTRA SEAL; EXHAUST GASKET SET; DOG LEG PORT; PORT DIMENSIONS W-1.25 IN. X H-1.75 IN.;
American Motors Concord 1979 5.0L / 304 / V8 ULTRA SEAL; EXHAUST GASKET SET; DOG LEG PORT; PORT DIMENSIONS W-1.25 IN. X H-1.75 IN.;
American Motors Gremlin 1972 5.0L / 304 / V8 ULTRA SEAL; EXHAUST GASKET SET; DOG LEG PORT; PORT DIMENSIONS W-1.25 IN. X H-1.75 IN.;
American Motors Gremlin 1973 5.0L / 304 / V8 ULTRA SEAL; EXHAUST GASKET SET; DOG LEG PORT; PORT DIMENSIONS W-1.25 IN. X H-1.75 IN.;
American Motors Gremlin 1974 5.0L / 304 / V8 ULTRA SEAL; EXHAUST GASKET SET; DOG LEG PORT; PORT DIMENSIONS W-1.25 IN. X H-1.75 IN.;
American Motors Gremlin 1975 5.0L / 304 / V8 ULTRA SEAL; EXHAUST GASKET SET; DOG LEG PORT; PORT DIMENSIONS W-1.25 IN. X H-1.75 IN.;
American Motors Gremlin 1976 5.0L / 304 / V8 ULTRA SEAL; EXHAUST GASKET SET; DOG LEG PORT; PORT DIMENSIONS W-1.25 IN. X H-1.75 IN.;
American Motors Hornet 1970 5.0L / 304 / V8 ULTRA SEAL; EXHAUST GASKET SET; DOG LEG PORT; PORT DIMENSIONS W-1.25 IN. X H-1.75 IN.;
American Motors Hornet 1971 5.9L / 360 / V8
5.0L / 304 / V8
ULTRA SEAL; EXHAUST GASKET SET; DOG LEG PORT; PORT DIMENSIONS W-1.25 IN. X H-1.75 IN.;
American Motors Hornet 1972 5.9L / 360 / V8
5.0L / 304 / V8
ULTRA SEAL; EXHAUST GASKET SET; DOG LEG PORT; PORT DIMENSIONS W-1.25 IN. X H-1.75 IN.;
American Motors Hornet 1973 5.9L / 360 / V8
5.0L / 304 / V8
ULTRA SEAL; EXHAUST GASKET SET; DOG LEG PORT; PORT DIMENSIONS W-1.25 IN. X H-1.75 IN.;
American Motors Hornet 1974 5.9L / 360 / V8
5.0L / 304 / V8
ULTRA SEAL; EXHAUST GASKET SET; DOG LEG PORT; PORT DIMENSIONS W-1.25 IN. X H-1.75 IN.;
American Motors Hornet 1975 5.0L / 304 / V8 ULTRA SEAL; EXHAUST GASKET SET; DOG LEG PORT; PORT DIMENSIONS W-1.25 IN. X H-1.75 IN.;
American Motors Hornet 1976 5.0L / 304 / V8 ULTRA SEAL; EXHAUST GASKET SET; DOG LEG PORT; PORT DIMENSIONS W-1.25 IN. X H-1.75 IN.;
American Motors Hornet 1977 5.0L / 304 / V8 ULTRA SEAL; EXHAUST GASKET SET; DOG LEG PORT; PORT DIMENSIONS W-1.25 IN. X H-1.75 IN.;
American Motors Javelin 1970 5.0L / 304 / V8
6.4L / 390 / V8
5.9L / 360 / V8
ULTRA SEAL; EXHAUST GASKET SET; DOG LEG PORT; PORT DIMENSIONS W-1.25 IN. X H-1.75 IN.;
American Motors Javelin 1971 6.6L / 401 / V8
5.0L / 304 / V8
5.9L / 360 / V8
ULTRA SEAL; EXHAUST GASKET SET; DOG LEG PORT; PORT DIMENSIONS W-1.25 IN. X H-1.75 IN.;
American Motors Javelin 1972 6.6L / 401 / V8
5.0L / 304 / V8
5.9L / 360 / V8
ULTRA SEAL; EXHAUST GASKET SET; DOG LEG PORT; PORT DIMENSIONS W-1.25 IN. X H-1.75 IN.;
American Motors Javelin 1973 6.6L / 401 / V8
5.0L / 304 / V8
5.9L / 360 / V8
ULTRA SEAL; EXHAUST GASKET SET; DOG LEG PORT; PORT DIMENSIONS W-1.25 IN. X H-1.75 IN.;
American Motors Javelin 1974 6.6L / 401 / V8
5.0L / 304 / V8
5.9L / 360 / V8
ULTRA SEAL; EXHAUST GASKET SET; DOG LEG PORT; PORT DIMENSIONS W-1.25 IN. X H-1.75 IN.;
American Motors Matador 1971 5.0L / 304 / V8
5.9L / 360 / V8
6.6L / 401 / V8
ULTRA SEAL; EXHAUST GASKET SET; DOG LEG PORT; PORT DIMENSIONS W-1.25 IN. X H-1.75 IN.;
American Motors Matador 1972 5.0L / 304 / V8
5.9L / 360 / V8
6.6L / 401 / V8
ULTRA SEAL; EXHAUST GASKET SET; DOG LEG PORT; PORT DIMENSIONS W-1.25 IN. X H-1.75 IN.;
American Motors Matador 1973 5.0L / 304 / V8
5.9L / 360 / V8
6.6L / 401 / V8
ULTRA SEAL; EXHAUST GASKET SET; DOG LEG PORT; PORT DIMENSIONS W-1.25 IN. X H-1.75 IN.;
American Motors Matador 1974 5.0L / 304 / V8
5.9L / 360 / V8
6.6L / 401 / V8
ULTRA SEAL; EXHAUST GASKET SET; DOG LEG PORT; PORT DIMENSIONS W-1.25 IN. X H-1.75 IN.;
American Motors Matador 1975 5.0L / 304 / V8
5.9L / 360 / V8
ULTRA SEAL; EXHAUST GASKET SET; DOG LEG PORT; PORT DIMENSIONS W-1.25 IN. X H-1.75 IN.;
American Motors Matador 1976 5.0L / 304 / V8
5.9L / 360 / V8
ULTRA SEAL; EXHAUST GASKET SET; DOG LEG PORT; PORT DIMENSIONS W-1.25 IN. X H-1.75 IN.;
American Motors Matador 1977 5.0L / 304 / V8
5.9L / 360 / V8
ULTRA SEAL; EXHAUST GASKET SET; DOG LEG PORT; PORT DIMENSIONS W-1.25 IN. X H-1.75 IN.;
American Motors Matador 1978 5.9L / 360 / V8 ULTRA SEAL; EXHAUST GASKET SET; DOG LEG PORT; PORT DIMENSIONS W-1.25 IN. X H-1.75 IN.;
American Motors Pacer 1978 5.0L / 304 / V8 ULTRA SEAL; EXHAUST GASKET SET; DOG LEG PORT; PORT DIMENSIONS W-1.25 IN. X H-1.75 IN.;
American Motors Pacer 1979 5.0L / 304 / V8 ULTRA SEAL; EXHAUST GASKET SET; DOG LEG PORT; PORT DIMENSIONS W-1.25 IN. X H-1.75 IN.;
American Motors Rebel 1970 5.0L / 304 / V8
6.4L / 390 / V8
5.9L / 360 / V8
ULTRA SEAL; EXHAUST GASKET SET; DOG LEG PORT; PORT DIMENSIONS W-1.25 IN. X H-1.75 IN.;
American Motors Spirit 1979 5.0L / 304 / V8 ULTRA SEAL; EXHAUST GASKET SET; DOG LEG PORT; PORT DIMENSIONS W-1.25 IN. X H-1.75 IN.;

Specifications:

Collector Gaskets Included No
Emission Code 5
Engine American Motors V8
Gasket Line Ultra-Seal
Material Ultra-seal
Part Type Exhaust Manifold Gasket Set
Port Shape Dog Leg
Port Size 1.25" x 1.75"
Product Type Header Gaskets
Thickness .062"
Warranty Limited 90 Day Warranty TX, Limited 90 Day Warranty
Weight 0.4400

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