Fel-Pro 420 Distributor O-Ring

Brand Fel-Pro 420
Material Nitrile
Inside Diameter (Fraction) 1 1/16
Inside Diameter (Inch) 1.062
Outside Diameter (Fraction) 1 5/16
Outside Diameter (Inch) 1.312
Standard Unit Pack 1
Unit of Dimension Inch
Width (Fraction) 1/4
Width (Inch) 0.250
Fits Buick, Cadillac, Chevrolet, Jeep, Oldsmobile, and Pontiac · 392 vehicles

Application-specific material. Nitrile construction helps deliver a reliable seal.

Distributor O-ring. A sealing ring for distributor and magneto applications.

100% vehicle sealing. Built for sealing performance and durability professionals trust.

Cross-references Dayco 72215, Dorman - HELP 56220 and 10P2276 for the same application. See all 16.

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Fel-Pro 420 Distributor O-Ring Seal

Fel-Pro 420 is a distributor O-ring made from nitrile for sealing the distributor housing where it meets the engine. With an inside diameter of 1.062 inch, an outside diameter of 1.312 inch, and a 0.250 inch width, it is sized for applications that call for a compact, oil-resistant distributor seal.

Compatible With classic Buick, Oldsmobile, Pontiac, Chevrolet, Cadillac, and Jeep distributor applications, this Fel-Pro 420 seal supports proper sealing on vehicles such as the Pontiac Firebird, Buick Regal, Oldsmobile Cutlass Supreme, and Chevrolet Monte Carlo. This part cross-references Dayco 72215 and Dorman - HELP 56220 for the same application.

Key Features

  • Nitrile construction for oil-resistant sealing performance
  • Inside diameter: 1.062 inch; outside diameter: 1.312 inch
  • Width: 0.250 inch for distributor housing sealing applications
  • Designed for ignition distributor and magneto service
  • Direct-fit style seal for supported classic vehicle applications

Application Details

Fel-Pro builds sealing products around application-specific materials, and this distributor O-ring follows that approach for ignition service. The Fel-Pro 420 is used where a distributor body needs a reliable seal to help maintain proper engine sealing at the distributor interface. It is a practical choice for restoration work and maintenance on older GM and Jeep platforms, including Fits 1977-1981 Pontiac Firebird, N/A; Fits 1973-1987 Buick Regal, N/A; and Fits 1977-1987 Oldsmobile Cutlass Supreme, N/A.

What It Helps Address

  • Oil seepage around the distributor base
  • Loss of sealing at the distributor-to-engine interface
  • Worn or hardened original distributor O-rings
  • Service needs during distributor removal or ignition maintenance
  • Restoration of proper sealing on classic GM and Jeep engines

Installation Notes and Tips

Inspect the distributor housing and mating surface before installation. Clean away old seal material, oil residue, and debris so the new O-ring seats evenly. Verify the dimensions match the application before assembly, and lubricate the seal lightly with clean engine oil during installation to reduce twisting or pinching.

Quality Assurance

Fel-Pro sealing products are built around vehicle-specific materials and sealing applications, with a focus on dependable fit and durability for professional repair use.

This part fits 392 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersFuel TypePositionNotes
1989PontiacFirebird3.8LV6N/A
1988BuickCentury3.8LV6N/A
1988BuickLeSabre3.8LV6N/A
1988BuickReatta3.8LV6N/A
1988BuickRiviera3.8LV6N/A
1988BuickSkylark3.0LV6N/A
1988Oldsmobile983.8LV6N/A
1988OldsmobileCutlass Calais3.0LV6N/A
1988OldsmobileCutlass Ciera3.8LV6N/A
1988OldsmobileCutlass Cruiser3.8LV6N/A
1988OldsmobileDelta 883.8LV6N/A
1988OldsmobileToronado3.8LV6N/A
1988PontiacBonneville3.8LV6N/A
1987BuickCentury3.8LV6N/A
1987BuickLeSabre3.8LV6N/A
1987BuickRegal3.8LV6N/A
1987BuickRiviera3.8LV6N/A
1987BuickSkylark3.0LV6N/A
1987ChevroletMonte Carlo3.8LV6N/A
1987Oldsmobile983.8LV6N/A
1987OldsmobileCalais3.0LV6N/A
1987OldsmobileCutlass Ciera3.8LV6N/A
1987OldsmobileCutlass Cruiser3.8LV6N/A
1987OldsmobileCutlass Salon3.8LV6N/A
1987OldsmobileCutlass Supreme3.8LV6N/A
1987OldsmobileDelta 883.8LV6N/A
1987OldsmobileToronado3.8LV6N/A
1987PontiacBonneville3.8LV6N/A
1987PontiacGrand Am3.0LV6N/A
1987PontiacGrand Prix3.8LV6N/A
1986BuickCentury3.8LV6N/A
1986BuickLeSabre3.8LV6N/A
1986BuickLeSabre3.0LV6N/A
1986BuickRegal3.8LV6N/A
1986BuickRiviera3.8LV6N/A
1986BuickSkylark3.0LV6N/A
1986ChevroletMonte Carlo3.8LV6N/A
1986Oldsmobile983.8LV6N/A
1986OldsmobileCalais3.0LV6N/A
1986OldsmobileCutlass Ciera3.8LV6N/A
1986OldsmobileCutlass Salon3.8LV6N/A
1986OldsmobileCutlass Supreme3.8LV6N/A
1986OldsmobileDelta 883.8LV6N/A
1986OldsmobileDelta 883.0LV6N/A
1986OldsmobileToronado3.8LV6N/A
1986PontiacBonneville3.8LV6N/A
1986PontiacGrand Am3.0LV6N/A
1986PontiacGrand Prix3.8LV6N/A
1985BuickCentury3.8LV6N/A
1985BuickCentury3.0LV6N/A
1985BuickLeSabre3.8LV6N/A
1985BuickRegal3.8LV6N/A
1985BuickRiviera3.8LV6N/A
1985ChevroletCaprice3.8LV6N/A
1985ChevroletImpala3.8LV6N/A
1985ChevroletMonte Carlo3.8LV6N/A
1985Oldsmobile983.8LV6N/A
1985Oldsmobile983.0LV6N/A
1985OldsmobileCalais3.0LV6N/A
1985OldsmobileCutlass Ciera3.0LV6N/A
1985OldsmobileCutlass Ciera3.8LV6N/A
1985OldsmobileCutlass Salon3.8LV6N/A
1985OldsmobileCutlass Supreme3.8LV6N/A
1985OldsmobileDelta 883.8LV6N/A
1985PontiacBonneville3.8LV6N/A
1985PontiacGrand Am3.0LV6N/A
1985PontiacGrand Prix3.8LV6N/A
1985PontiacParisienne3.8LV6N/A
1984BuickCentury3.8LV6N/A
1984BuickCentury3.0LV6N/A
1984BuickLeSabre3.8LV6N/A
1984BuickLeSabre4.1LV6N/A
1984BuickRegal3.8LV6N/A
1984BuickRegal4.1LV6N/A
1984BuickRiviera3.8LV6N/A
1984BuickRiviera4.1LV6N/A
1984ChevroletCaprice3.8LV6N/A
1984ChevroletEl Camino3.8LV6N/A
1984ChevroletImpala3.8LV6N/A
1984ChevroletMonte Carlo3.8LV6N/A
1984OldsmobileCutlass Calais3.8LV6N/A
1984OldsmobileCutlass Ciera3.0LV6N/A
1984OldsmobileCutlass Ciera3.8LV6N/A
1984OldsmobileCutlass Supreme3.8LV6N/A
1984OldsmobileDelta 883.8LV6N/A
1984OldsmobileToronado4.1LV6N/A
1984PontiacBonneville3.8LV6N/A
1984PontiacGrand Prix3.8LV6N/A
1984PontiacParisienne3.8LV6N/A
1983BuickCentury3.0LV6N/A
1983BuickLeSabre3.8LV6N/A
1983BuickLeSabre4.1LV6N/A
1983BuickRegal3.8LV6N/A
1983BuickRegal4.1LV6N/A
1983BuickRiviera3.8LV6N/A
1983BuickRiviera4.1LV6N/A
1983ChevroletCaprice3.8LV6N/A
1983ChevroletEl Camino3.8LV6N/A
1983ChevroletImpala3.8LV6N/A
1983ChevroletMalibu3.8LV6N/A
1983ChevroletMonte Carlo3.8LV6N/A
1983Oldsmobile984.1LV6N/A
1983OldsmobileCutlass Calais3.8LV6N/A
1983OldsmobileCutlass Ciera3.0LV6N/A
1983OldsmobileCutlass Cruiser3.8LV6N/A
1983OldsmobileCutlass Supreme3.8LV6N/A
1983OldsmobileDelta 883.8LV6N/A
1983OldsmobileToronado4.1LV6N/A
1983PontiacBonneville3.8LV6N/A
1983PontiacGrand LeMans3.8LV6N/A
1983PontiacGrand Prix3.8LV6N/A
1983PontiacParisienne3.8LV6N/A
1982BuickCentury3.0LV6N/A
1982BuickLeSabre3.8LV6N/A
1982BuickLeSabre4.1LV6N/A
1982BuickRegal3.8LV6N/A
1982BuickRegal4.1LV6N/A
1982BuickRiviera3.8LV6N/A
1982BuickRiviera4.1LV6N/A
1982CadillacDeVille4.1LV6N/A
1982CadillacDeVille4.1LV8N/A
1982CadillacEldorado4.1LV6N/A
1982CadillacEldorado4.1LV8N/A
1982CadillacFleetwood4.1LV6N/A
1982CadillacFleetwood4.1LV8N/A
1982CadillacSeville4.1LV6N/A
1982CadillacSeville4.1LV8N/A
1982ChevroletCaprice3.8LV6N/A
1982ChevroletEl Camino3.8LV6N/A
1982ChevroletImpala3.8LV6N/A
1982ChevroletMalibu3.8LV6N/A
1982ChevroletMonte Carlo3.8LV6N/A
1982Oldsmobile984.1LV6N/A
1982OldsmobileCutlass Calais3.8LV6N/A
1982OldsmobileCutlass Ciera3.0LV6N/A
1982OldsmobileCutlass Cruiser3.8LV6N/A
1982OldsmobileCutlass Supreme3.8LV6N/A
1982OldsmobileDelta 883.8LV6N/A
1982OldsmobileToronado4.1LV6N/A
1982PontiacBonneville3.8LV6N/A
1982PontiacBonneville4.1LV6N/A
1982PontiacGrand LeMans4.1LV6N/A
1982PontiacGrand LeMans3.8LV6N/A
1982PontiacGrand Prix3.8LV6N/A
1982PontiacGrand Prix4.1LV6N/A
1982PontiacParisienne3.8LV6N/A
1981BuickCentury3.8LV6N/A
1981BuickLeSabre3.8LV6N/A
1981BuickLeSabre4.1LV6N/A
1981BuickRegal3.8LV6N/A
1981BuickRiviera3.8LV6N/A
1981BuickRiviera4.1LV6N/A
1981CadillacDeVille4.1LV6N/A
1981CadillacEldorado4.1LV6N/A
1981CadillacFleetwood4.1LV6N/A
1981CadillacSeville4.1LV6N/A
1981ChevroletCamaro3.8LV6N/A
1981ChevroletCaprice3.8LV6N/A
1981ChevroletEl Camino3.8LV6N/A
1981ChevroletImpala3.8LV6N/A
1981ChevroletMalibu3.8LV6N/A
1981ChevroletMonte Carlo3.8LV6N/A
1981Oldsmobile984.1LV6N/A
1981OldsmobileCutlass3.8LV6N/A
1981OldsmobileCutlass Calais3.8LV6N/A
1981OldsmobileCutlass Cruiser3.8LV6N/A
1981OldsmobileCutlass Supreme3.8LV6N/A
1981OldsmobileDelta 883.8LV6N/A
1981OldsmobileToronado4.1LV6N/A
1981PontiacBonneville3.8LV6N/A
1981PontiacCatalina3.8LV6N/A
1981PontiacFirebird3.8LV6N/A
1981PontiacGrand LeMans3.8LV6N/A
1981PontiacGrand Prix3.8LV6N/A
1981PontiacLaurentian3.8LV6N/A
1981PontiacLeMans3.8LV6N/A
1981PontiacParisienne3.8LV6N/A
1980BuickCentury3.8LV6N/A
1980BuickLeSabre3.8LV6N/A
1980BuickLeSabre5.7LV8N/A
1980BuickLeSabre4.1LV6N/A
1980BuickRegal3.8LV6N/A
1980BuickRiviera3.8LV6N/A
1980BuickSkyhawk3.8LV6N/A
1980CadillacDeVille4.1LV6N/A
1980CadillacFleetwood4.1LV6N/A
1980ChevroletCamaro3.8LV6N/A
1980ChevroletCaprice3.8LV6N/A
1980ChevroletEl Camino3.8LV6N/A
1980ChevroletImpala3.8LV6N/A
1980ChevroletMalibu3.8LV6N/A
1980ChevroletMonte Carlo3.8LV6N/A
1980ChevroletMonza3.8LV6N/A
1980OldsmobileCutlass3.8LV6N/A
1980OldsmobileCutlass Calais3.8LV6N/A
1980OldsmobileCutlass Cruiser3.8LV6N/A
1980OldsmobileCutlass Salon3.8LV6N/A
1980OldsmobileCutlass Supreme3.8LV6N/A
1980OldsmobileDelta 883.8LV6N/A
1980OldsmobileStarfire3.8LV6N/A
1980PontiacBonneville5.7LV8N/A
1980PontiacBonneville3.8LV6N/A
1980PontiacCatalina3.8LV6N/A
1980PontiacCatalina5.7LV8N/A
1980PontiacFirebird3.8LV6N/A
1980PontiacGrand LeMans3.8LV6N/A
1980PontiacGrand Prix3.8LV6N/A
1980PontiacLaurentian5.7LV8N/A
1980PontiacLeMans3.8LV6N/A
1980PontiacParisienne5.7LV8GASN/A
1980PontiacSunbird3.8LV6N/A
1979BuickCentury3.8LV6N/A
1979BuickCentury3.2LV6N/A
1979BuickLeSabre3.8LV6N/A
1979BuickLeSabre5.7LV8N/A
1979BuickRegal3.8LV6N/A
1979BuickRegal3.2LV6N/A
1979BuickRiviera3.8LV6N/A
1979BuickSkyhawk3.8LV6N/A
1979BuickSkylark3.8LV6N/A
1979ChevroletEl Camino3.8LV6N/A
1979ChevroletMalibu3.8LV6N/A
1979ChevroletMonte Carlo3.8LV6N/A
1979ChevroletMonza3.8LV6N/A
1979ChevroletMonza3.2LV6N/A
1979OldsmobileCutlass3.8LV6N/A
1979OldsmobileCutlass Calais3.8LV6N/A
1979OldsmobileCutlass Salon3.8LV6N/A
1979OldsmobileCutlass Supreme3.8LV6N/A
1979OldsmobileDelta 883.8LV6N/A
1979OldsmobileOmega3.8LV6N/A
1979OldsmobileStarfire3.8LV6N/A
1979PontiacBonneville5.7LV8N/A
1979PontiacCatalina3.8LV6N/A
1979PontiacCatalina5.7LV8N/A
1979PontiacFirebird3.8LV6N/A
1979PontiacGrand Am3.8LV6N/A
1979PontiacGrand LeMans3.8LV6N/A
1979PontiacGrand Prix3.8LV6N/A
1979PontiacLaurentian5.7LV8N/A
1979PontiacLeMans3.8LV6N/A
1979PontiacPhoenix3.8LV6N/A
1979PontiacSunbird3.8LV6N/A
1978BuickCentury3.8LV6N/A
1978BuickCentury3.2LV6N/A
1978BuickLeSabre3.8LV6N/A
1978BuickLeSabre5.7LV8N/A
1978BuickRegal3.8LV6N/A
1978BuickRegal3.2LV6N/A
1978BuickRiviera5.7LV8N/A
1978BuickSkyhawk3.8LV6N/A
1978BuickSkylark3.8LV6N/A
1978ChevroletEl Camino3.8LV6N/A
1978ChevroletMalibu3.8LV6N/A
1978ChevroletMonte Carlo3.8LV6N/A
1978ChevroletMonza3.8LV6N/A
1978ChevroletMonza3.2LV6N/A
1978OldsmobileCutlass3.8LV6N/A
1978OldsmobileCutlass Calais3.8LV6N/A
1978OldsmobileCutlass Salon3.8LV6N/A
1978OldsmobileCutlass Supreme3.8LV6N/A
1978OldsmobileDelta 883.8LV6N/A
1978OldsmobileOmega3.8LV6N/A
1978OldsmobileStarfire3.8LV6N/A
1978PontiacBonneville5.7LV8N/A
1978PontiacCatalina3.8LV6N/A
1978PontiacCatalina5.7LV8N/A
1978PontiacFirebird3.8LV6N/A
1978PontiacGrand LeMans3.8LV6N/A
1978PontiacGrand Prix3.8LV6N/A
1978PontiacLaurentian5.7LV8N/A
1978PontiacLeMans3.8LV6N/A
1978PontiacPhoenix3.8LV6N/A
1978PontiacSunbird3.8LV6N/A
1977BuickCentury5.7LV8N/A
1977BuickCentury3.8LV6N/A
1977BuickLeSabre5.7LV8N/A
1977BuickLeSabre3.8LV6N/A
1977BuickRegal5.7LV8N/A
1977BuickRegal3.8LV6N/A
1977BuickRiviera5.7LV8N/A
1977BuickSkyhawk3.8LV6N/A
1977BuickSkylark3.8LV6N/A
1977OldsmobileCutlass3.8LV6N/A
1977OldsmobileCutlass Supreme3.8LV6N/A
1977OldsmobileDelta 883.8LV6N/A
1977OldsmobileOmega3.8LV6N/A
1977OldsmobileStarfire3.8LV6N/A
1977PontiacCatalina3.8LV6N/A
1977PontiacFirebird3.8LV6N/A
1977PontiacGrand LeMans3.8LV6N/A
1977PontiacLeMans3.8LV6N/A
1977PontiacPhoenix3.8LV6N/A
1977PontiacSunbird3.8LV6N/A
1976BuickCentury5.7LV8N/A
1976BuickCentury3.8LV6N/A
1976BuickLeSabre7.5LV8N/A
1976BuickLeSabre5.7LV8N/A
1976BuickLeSabre3.8LV6N/A
1976BuickRegal5.7LV8N/A
1976BuickRegal3.8LV6N/A
1976BuickRiviera7.5LV8N/A
1976BuickSkyhawk3.8LV6N/A
1976BuickSkylark5.7LV8N/A
1976BuickSkylark3.8LV6N/A
1976OldsmobileOmega5.7LV8N/A
1976OldsmobileStarfire3.8LV6N/A
1976PontiacSunbird3.8LV6N/A
1975BuickCentury5.7LV8N/A
1975BuickCentury3.8LV6N/A
1975BuickLeSabre7.5LV8N/A
1975BuickLeSabre5.7LV8N/A
1975BuickRegal5.7LV8N/A
1975BuickRegal3.8LV6N/A
1975BuickRiviera7.5LV8N/A
1975BuickSkyhawk3.8LV6N/A
1975BuickSkylark5.7LV8N/A
1975BuickSkylark3.8LV6N/A
1975OldsmobileOmega5.7LV8N/A
1975OldsmobileStarfire3.8LV6N/A
1975PontiacGrand Am5.7LV8N/A
1975PontiacGrand LeMans5.7LV8N/A
1975PontiacLeMans5.7LV8N/A
1974BuickCentury5.7LV8N/A
1974BuickCentury7.5LV8N/A
1974BuickLeSabre5.7LV8N/A
1974BuickLeSabre7.5LV8N/A
1974BuickRegal5.7LV8N/A
1974BuickRegal7.5LV8N/A
1974BuickRiviera7.5LV8N/A
1973BuickCentury5.7LV8N/A
1973BuickCentury7.5LV8N/A
1973BuickLeSabre5.7LV8N/A
1973BuickLeSabre7.5LV8N/A
1973BuickRegal5.7LV8N/A
1973BuickRegal7.5LV8N/A
1973BuickRiviera7.5LV8N/A
1972BuickLeSabre5.7LV8N/A
1972BuickLeSabre7.5LV8N/A
1972BuickRiviera7.5LV8N/A
1972BuickSkylark5.7LV8N/A
1971BuickLeSabre5.7LV8N/A
1971BuickLeSabre7.5LV8N/A
1971BuickRiviera7.5LV8N/A
1971BuickSkylark5.7LV8N/A
1971BuickSkylark7.5LV8N/A
1971JeepCJ53.7LV6N/A
1971JeepWagoneer5.7LV8N/A
1970BuickLeSabre5.7LV8N/A
1970BuickLeSabre7.5LV8N/A
1970BuickRiviera7.5LV8N/A
1970BuickSkylark5.7LV8N/A
1970BuickSkylark7.5LV8N/A
1970JeepCJ53.7LV6GASN/A
1970JeepWagoneer5.7LV8N/A
1969BuickLeSabre5.7LV8N/A
1969BuickRiviera7.0LV8N/A
1969BuickSkylark5.7LV8N/A
1969JeepCJ53.7LV6GASN/A
1969JeepWagoneer5.7LV8N/A
1968BuickLeSabre5.7LV8N/A
1968BuickRiviera7.0LV8N/A
1968BuickSkylark5.7LV8N/A
1968BuickSkylark6.6LV8N/A
1968JeepCJ53.7LV6GASN/A
1968JeepWagoneer5.7LV8N/A
1967BuickLeSabre5.6LV8N/A
1967BuickRiviera7.0LV8N/A
1967BuickSkylark4.9LV8N/A
1967BuickSkylark3.7LV6N/A
1967BuickSkylark5.6LV8N/A
1967BuickSkylark6.6LV8N/A
1967JeepCJ53.7LV6N/A
1966BuickLeSabre5.6LV8N/A
1966BuickSkylark4.9LV8N/A
1966BuickSkylark3.7LV6N/A
1966BuickSkylark5.6LV8N/A
1966JeepCJ53.7LV6N/A
1965BuickLeSabre4.9LV8N/A
1965BuickSkylark4.9LV8N/A
1965BuickSkylark3.7LV6N/A
1964BuickLeSabre4.9LV8N/A
1964BuickSkylark4.9LV8N/A
1964BuickSkylark3.7LV6N/A
1963BuickSkylark3.5LV8N/A
1963OldsmobileCutlass3.5LV8N/A
1962BuickSkylark3.5LV8N/A
1962OldsmobileCutlass3.5LV8N/A
1962PontiacTempest3.5LV8N/A
1961BuickSkylark3.5LV8N/A
1961OldsmobileCutlass3.5LV8N/A
1961PontiacTempest3.5LV8N/A
Directly replaces or cross-references 16 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Dayco — 72215Dorman - HELP — 5622010P227621657A34720R1154774201657A303360304720R1702642710020119435919593313047209R112551280T11879T