Fits AMC 290-401. Chevrolet Small Block 262-400, Chrysler Big Block 383-440 Wedge Engines, Pontiac 326-455, and Oldsmobile 330-455
Headlock™ Bolts eliminate the need for lock washers, Period. That's because each Headlock™ Bolt features 24 equally-spaced, stainless steel teeth serrations that bite into and hold onto the attaching surface-eliminating the need for lock-washers.
  • 12 per Package
  • Includes a ball-head/hex-key socket-installation tool that makes it easy to get them started
  • 410 stainless steel
  • Minimum 180,000 PSI tensile strength
  • 24 equally spaced clockwise teeth

Information:

Holley Performance Emission Code 5: This part is legal for sale or use on Emissions Controlled Vehicles; Uncontrolled (Non-Emissions Controlled) Vehicles; and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations

Application Summary:

Year Make/Model
1973-1975 Buick Apollo
1972-1973 Buick Centurion
1973-1981 Buick Century
1991-1993 Buick Commercial Chassis
1974 Buick Electra
1976-1977 Buick Electra
1973-1974 Buick Estate Wagon
1972 Buick GS
1972-1975 Buick LeSabre
1977-1978 Buick LeSabre
1973-1980 Buick Regal
1982-1987 Buick Regal
1974 Buick Riviera
1991-1993 Buick Roadmaster
1972 Buick Skylark
1975-1979 Buick Skylark
1972 Buick Sportwagon
1990-1992 Cadillac Brougham
1992-1993 Cadillac Commercial Chassis
1980 Cadillac Eldorado
1993 Cadillac Fleetwood
1980 Cadillac Seville
1969 Checker Deluxe
1965-1982 Checker Marathon
1959 Chevrolet 3B
1959 Chevrolet 3C
1959 Chevrolet 3D
1959 Chevrolet 3E
1959 Chevrolet 3F
1959 Chevrolet 3G
1955-1975 Chevrolet Bel Air
1981 Chevrolet Bel Air
1958-1972 Chevrolet Biscayne
1958-1961 Chevrolet Brookwood
1969-1972 Chevrolet Brookwood
1975-1986 Chevrolet C10
1960-1974 Chevrolet C10 Pickup
1988-1995 Chevrolet C1500
1975-1986 Chevrolet C20
1960-1974 Chevrolet C20 Pickup
1988-1995 Chevrolet C2500
1975-1986 Chevrolet C30
1960-1974 Chevrolet C30 Pickup
1988-1995 Chevrolet C3500
1960-1962 Chevrolet C40
1967-1992 Chevrolet Camaro
1966-1996 Chevrolet Caprice
1964-1973 Chevrolet Chevelle
1963-1968 Chevrolet Chevy II
1991-1993 Chevrolet Commercial Chassis
1955-1982 Chevrolet Corvette
1984-1991 Chevrolet Corvette
1957-1958 Chevrolet Del Ray
1969-1970 Chevrolet Estate
1975-1995 Chevrolet G10
1968-1974 Chevrolet G10 Van
1975-1995 Chevrolet G20
1967-1974 Chevrolet G20 Van
1975-1996 Chevrolet G30
1970-1974 Chevrolet G30 Van
1958-1985 Chevrolet Impala
1975-1986 Chevrolet K10
1960-1974 Chevrolet K10 Pickup
1988-1995 Chevrolet K1500
1975-1986 Chevrolet K20
1960-1974 Chevrolet K20 Pickup
1988-1995 Chevrolet K2500
1977-1986 Chevrolet K30
1968-1974 Chevrolet K30 Pickup
1988-1995 Chevrolet K3500
1959-1961 Chevrolet Kingswood
1969-1972 Chevrolet Kingswood
1973-1976 Chevrolet Laguna
1964-1967 Chevrolet Malibu
Attributes
ASIN B00GWBZCEU
Brand Mr. Gasket
California Proposition 65 No
Country of Origin (Primary) CN
Emission Code 5
Engine Make/Size Chevy Big Block, Chevy Small Block (262-400)
Finish Polished
GTIN 00084041040010
Harmonized Tariff Code (Schedule B) 8409915085
Hazardous Material Code N
Item Weight 5.000 lbs.
Life Cycle Status Code Available to Order
Material 410 stainless steel
NAFTA Preference Criterion Code B
Product Type HeadLock Locking Header Bolts
SDR Required Flag N
Size 3/8-16 x 3/4
Warning California Proposition 65
Warranty Limited 90 Day
Weight 5, 5.0000

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Mr. Gasket 2230G LOCK HEADER BLT SAE 12 PC

Product Information

Vehicle Fitment