Homeβ€Ί Emission Control > Gaskets and Sealing Systemsβ€Ί Fel-Pro 70800 Engine Crankcase Vent O-Ring
Part #: 70800

Fel-Pro 70800 Engine Crankcase Vent O-Ring

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Fel-Pro 70800 Engine Crankcase Vent O-Ring

Fel-Pro 70800 is an engine crankcase vent O-ring built for sealing service in emission control applications. It is a direct-fit sealing component for a wide range of GM, Ford, Jeep, Isuzu, and Pontiac vehicles, including Chevrolet S10, Pontiac Grand Prix, and Buick Century applications.

Key Features

  • Engine crankcase vent O-ring for emission control sealing service
  • Application-specific material selection for vehicle sealing needs
  • Built to support consistent sealing performance in professional repair work
  • Fits a broad range of 1982-1999 vehicles across multiple makes and models
  • Part number 70800 for easy lookup and ordering

Detailed Description

Fel-Pro 70800 is an engine crankcase vent O-ring used in emission control and sealing system service. Fel-Pro gaskets are engineered for vehicle-specific sealing performance, using materials selected for the application rather than a one-size-fits-all approach. This makes the part a practical choice when servicing crankcase vent connections on vehicles such as Chevrolet Camaro, Pontiac Firebird, Buick Regal, and Oldsmobile Cutlass Supreme.

This part cross-references Dorman - HELP 79101 and MAHLE B25934 for the same application. The Fel-Pro 70800 part number is also commonly referenced in sealing and gasket catalogs for related service work.

What It Helps Address

  • Crankcase vent seal leakage
  • Air intrusion at the vent connection
  • Oil vapor seepage around the sealing point
  • Emission control sealing wear from age and heat
  • Service issues on high-mileage GM, Ford, Jeep, and Isuzu vehicles

Installation Notes and Tips

  • Confirm the vehicle application before installation using the year, make, and model listing.
  • Inspect the mating surfaces for damage, contamination, or hardened residue before installing the new O-ring.
  • Replace the O-ring during related crankcase vent or emission control service to restore sealing integrity.
  • Verify proper seating after installation to avoid leaks at the vent connection.

Quality Assurance

Fel-Pro sealing products are built around application-specific materials and vehicle-focused fitment. That approach supports dependable sealing performance for professional repair and maintenance work.

This part fits 352 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1999BuickCentury3.1LV6N/A
1999ChevroletLumina3.1LV6N/A
1999ChevroletMalibu3.1LV6N/A
1999ChevroletMonte Carlo3.1LV6N/A
1999OldsmobileCutlass3.1LV6N/A
1999PontiacGrand Prix3.1LV6N/A
1998BuickCentury3.1LV6N/A
1998BuickSkylark3.1LV6N/A
1998ChevroletLumina3.1LV6N/A
1998ChevroletMalibu3.1LV6N/A
1998ChevroletMonte Carlo3.1LV6N/A
1998OldsmobileAchieva3.1LV6N/A
1998OldsmobileCutlass3.1LV6N/A
1998PontiacGrand Am3.1LV6N/A
1998PontiacGrand Prix3.1LV6N/A
1997BuickCentury3.1LV6N/A
1997BuickSkylark3.1LV6N/A
1997ChevroletLumina3.1LV6N/A
1997ChevroletMalibu3.1LV6N/A
1997ChevroletMonte Carlo3.1LV6N/A
1997OldsmobileAchieva3.1LV6N/A
1997OldsmobileCutlass3.1LV6N/A
1997OldsmobileCutlass Supreme3.1LV6N/A
1997PontiacGrand Am3.1LV6N/A
1997PontiacGrand Prix3.1LV6N/A
1996BuickCentury3.1LV6N/A
1996BuickRegal3.1LV6N/A
1996BuickSkylark3.1LV6N/A
1996ChevroletCorsica3.1LV6N/A
1996ChevroletLumina3.1LV6N/A
1996ChevroletMonte Carlo3.1LV6N/A
1996OldsmobileAchieva3.1LV6N/A
1996OldsmobileCutlass Ciera3.1LV6N/A
1996OldsmobileCutlass Supreme3.1LV6N/A
1996PontiacGrand Am3.1LV6N/A
1996PontiacGrand Prix3.1LV6N/A
1995BuickCentury3.1LV6N/A
1995BuickRegal3.1LV6N/A
1995BuickSkylark3.1LV6N/A
1995ChevroletCamaro3.4LV6N/A
1995ChevroletCorsica3.1LV6N/A
1995ChevroletLumina3.1LV6N/A
1995ChevroletLumina APV3.1LV6N/A
1995ChevroletMonte Carlo3.1LV6N/A
1995OldsmobileAchieva3.1LV6N/A
1995OldsmobileCutlass Ciera3.1LV6N/A
1995OldsmobileCutlass Supreme3.1LV6N/A
1995PontiacFirebird3.4LV6N/A
1995PontiacGrand Am3.1LV6N/A
1995PontiacGrand Prix3.1LV6N/A
1995PontiacTrans Sport3.1LV6N/A
1994BuickCentury3.1LV6N/A
1994BuickRegal3.1LV6N/A
1994BuickSkylark3.1LV6N/A
1994ChevroletCamaro3.4LV6N/A
1994ChevroletCavalier3.1LV6N/A
1994ChevroletCorsica3.1LV6N/A
1994ChevroletLumina3.1LV6N/A
1994ChevroletLumina APV3.1LV6N/A
1994FordE-350 Econoline7.3LV8N/A
1994FordE-350 Econoline Club Wagon7.3LV8N/A
1994FordF-2507.3LV8N/A
1994FordF-3507.3LV8N/A
1994IsuzuPickup3.1LV6N/A
1994OldsmobileAchieva3.1LV6N/A
1994OldsmobileCutlass Ciera3.1LV6N/A
1994OldsmobileCutlass Cruiser3.1LV6N/A
1994OldsmobileCutlass Supreme3.1LV6N/A
1994OldsmobileSilhouette3.1LV6N/A
1994PontiacFirebird3.4LV6N/A
1994PontiacGrand Am3.1LV6N/A
1994PontiacGrand Prix3.1LV6N/A
1994PontiacSunbird3.1LV6N/A
1994PontiacTrans Sport3.1LV6N/A
1993BuickRegal3.1LV6N/A
1993ChevroletCamaro3.4LV6N/A
1993ChevroletCavalier3.1LV6N/A
1993ChevroletCorsica3.1LV6N/A
1993ChevroletLumina3.1LV6N/A
1993ChevroletLumina APV3.1LV6N/A
1993ChevroletS102.8LV6N/A
1993FordE-350 Econoline7.3LV8N/A
1993FordE-350 Econoline Club Wagon7.3LV8N/A
1993FordF-2507.3LV8N/A
1993FordF-3507.3LV8N/A
1993GMCSonoma2.8LV6N/A
1993IsuzuPickup3.1LV6N/A
1993OldsmobileCutlass Supreme3.1LV6N/A
1993OldsmobileSilhouette3.1LV6N/A
1993PontiacFirebird3.4LV6N/A
1993PontiacGrand Prix3.1LV6N/A
1993PontiacSunbird3.1LV6N/A
1993PontiacTrans Sport3.1LV6N/A
1992BuickRegal3.1LV6N/A
1992ChevroletCamaro3.1LV6N/A
1992ChevroletCavalier3.1LV6N/A
1992ChevroletCorsica3.1LV6N/A
1992ChevroletLumina3.1LV6N/A
1992ChevroletLumina APV3.1LV6N/A
1992ChevroletS102.8LV6N/A
1992FordE-350 Econoline7.3LV8N/A
1992FordE-350 Econoline Club Wagon7.3LV8N/A
1992FordF-2507.3LV8N/A
1992FordF-3507.3LV8N/A
1992GMCSonoma2.8LV6N/A
1992IsuzuPickup3.1LV6N/A
1992IsuzuRodeo3.1LV6N/A
1992OldsmobileCutlass Supreme3.1LV6N/A
1992OldsmobileSilhouette3.1LV6N/A
1992PontiacFirebird3.1LV6N/A
1992PontiacGrand Prix3.1LV6N/A
1992PontiacSunbird3.1LV6N/A
1992PontiacTrans Sport3.1LV6N/A
1991BuickRegal3.1LV6N/A
1991ChevroletCamaro3.1LV6N/A
1991ChevroletCavalier3.1LV6N/A
1991ChevroletCorsica3.1LV6N/A
1991ChevroletLumina3.1LV6N/A
1991ChevroletLumina APV3.1LV6N/A
1991ChevroletS102.8LV6N/A
1991FordE-250 Econoline Club Wagon7.3LV8N/A
1991FordE-350 Econoline7.3LV8N/A
1991FordE-350 Econoline Club Wagon7.3LV8N/A
1991FordF-2507.3LV8N/A
1991FordF-3507.3LV8N/A
1991GMCSonoma2.8LV6N/A
1991IsuzuPickup3.1LV6N/A
1991IsuzuRodeo3.1LV6N/A
1991IsuzuTrooper2.8LV6N/A
1991OldsmobileCutlass Supreme3.1LV6N/A
1991OldsmobileSilhouette3.1LV6N/A
1991Pontiac60003.1LV6N/A
1991PontiacFirebird3.1LV6N/A
1991PontiacGrand Prix3.1LV6N/A
1991PontiacSunbird3.1LV6N/A
1991PontiacTempest3.1LV6N/A
1991PontiacTrans Sport3.1LV6N/A
1990BuickRegal3.1LV6N/A
1990ChevroletCamaro3.1LV6N/A
1990ChevroletCavalier3.1LV6N/A
1990ChevroletCelebrity3.1LV6N/A
1990ChevroletCorsica3.1LV6N/A
1990ChevroletLumina3.1LV6N/A
1990ChevroletLumina APV3.1LV6N/A
1990ChevroletS102.8LV6N/A
1990FordE-250 Econoline Club Wagon7.3LV8N/A
1990FordE-350 Econoline7.3LV8N/A
1990FordE-350 Econoline Club Wagon7.3LV8N/A
1990FordF-2507.3LV8N/A
1990FordF-3507.3LV8N/A
1990GMCS152.8LV6N/A
1990IsuzuTrooper2.8LV6N/A
1990OldsmobileCutlass Supreme3.1LV6N/A
1990OldsmobileSilhouette3.1LV6N/A
1990Pontiac60003.1LV6N/A
1990PontiacFirebird3.1LV6N/A
1990PontiacGrand Prix3.1LV6N/A
1990PontiacTempest3.1LV6N/A
1990PontiacTrans Sport3.1LV6N/A
1989BuickCentury2.8LV6N/A
1989BuickRegal3.1LV6N/A
1989BuickRegal2.8LV6N/A
1989BuickSkyhawk2.0LL4N/A
1989ChevroletCamaro2.8LV6N/A
1989ChevroletCavalier2.0LL4N/A
1989ChevroletCavalier2.8LV6N/A
1989ChevroletCelebrity2.8LV6N/A
1989ChevroletCorsica2.8LV6N/A
1989ChevroletCorsica2.0LL4N/A
1989ChevroletS102.8LV6N/A
1989ChevroletS10 Blazer2.8LV6N/A
1989FordE-250 Econoline Club Wagon7.3LV8N/A
1989FordE-350 Econoline7.3LV8N/A
1989FordE-350 Econoline Club Wagon7.3LV8N/A
1989FordF-2507.3LV8N/A
1989FordF-3507.3LV8N/A
1989GMCS152.8LV6N/A
1989GMCS15 Jimmy2.8LV6N/A
1989IsuzuTrooper2.8LV6N/A
1989OldsmobileCutlass Ciera2.8LV6N/A
1989OldsmobileCutlass Cruiser2.8LV6N/A
1989OldsmobileCutlass Supreme2.8LV6N/A
1989OldsmobileCutlass Supreme3.1LV6N/A
1989Pontiac60002.8LV6N/A
1989Pontiac60003.1LV6N/A
1989PontiacFirebird2.8LV6N/A
1989PontiacGrand Prix2.8LV6N/A
1989PontiacGrand Prix3.1LV6N/A
1989PontiacTempest2.8LV6N/A
1989PontiacTempest2.0LL4N/A
1988BuickCentury2.8LV6N/A
1988BuickRegal2.8LV6N/A
1988BuickSkyhawk2.0LL4N/A
1988CadillacCimarron2.8LV6N/A
1988ChevroletCamaro2.8LV6N/A
1988ChevroletCavalier2.0LL4N/A
1988ChevroletCavalier2.8LV6N/A
1988ChevroletCelebrity2.8LV6N/A
1988ChevroletCorsica2.8LV6N/A
1988ChevroletCorsica2.0LL4N/A
1988ChevroletS102.8LV6N/A
1988ChevroletS10 Blazer2.8LV6N/A
1988FordE-250 Econoline Club Wagon7.3LV8N/A
1988FordE-350 Econoline7.3LV8N/A
1988FordE-350 Econoline Club Wagon7.3LV8N/A
1988FordF-2507.3LV8N/A
1988FordF-3507.3LV8N/A
1988GMCS152.8LV6N/A
1988GMCS15 Jimmy2.8LV6N/A
1988OldsmobileCutlass Ciera2.8LV6N/A
1988OldsmobileCutlass Cruiser2.8LV6N/A
1988OldsmobileCutlass Supreme2.8LV6N/A
1988OldsmobileFirenza2.0LL4N/A
1988Pontiac60002.8LV6N/A
1988Pontiac60003.1LV6N/A
1988PontiacFiero2.8LV6N/A
1988PontiacFirebird2.8LV6N/A
1988PontiacGrand Prix2.8LV6N/A
1988PontiacTempest2.8LV6N/A
1988PontiacTempest2.0LL4N/A
1987BuickCentury2.8LV6N/A
1987BuickSkyhawk2.0LL4N/A
1987CadillacCimarron2.8LV6N/A
1987ChevroletCamaro2.8LV6N/A
1987ChevroletCavalier2.0LL4N/A
1987ChevroletCavalier2.8LV6N/A
1987ChevroletCelebrity2.8LV6N/A
1987ChevroletCorsica2.8LV6N/A
1987ChevroletCorsica2.0LL4N/A
1987ChevroletS102.8LV6N/A
1987ChevroletS10 Blazer2.8LV6N/A
1987GMCS152.8LV6N/A
1987GMCS15 Jimmy2.8LV6N/A
1987OldsmobileCutlass Ciera2.8LV6N/A
1987OldsmobileCutlass Cruiser2.8LV6N/A
1987OldsmobileFirenza2.8LV6N/A
1987OldsmobileFirenza2.0LL4N/A
1987Pontiac60002.8LV6N/A
1987PontiacFiero2.8LV6N/A
1987PontiacFirebird2.8LV6N/A
1987PontiacTempest2.8LV6N/A
1987PontiacTempest2.0LL4N/A
1986BuickCentury2.8LV6N/A
1986BuickSkyhawk2.0LL4N/A
1986CadillacCimarron2.0LL4N/A
1986CadillacCimarron2.8LV6N/A
1986ChevroletCamaro2.8LV6N/A
1986ChevroletCavalier2.0LL4N/A
1986ChevroletCavalier2.8LV6N/A
1986ChevroletCelebrity2.8LV6N/A
1986ChevroletS102.8LV6N/A
1986ChevroletS10 Blazer2.8LV6N/A
1986GMCS152.8LV6N/A
1986GMCS15 Jimmy2.8LV6N/A
1986JeepCherokee2.8LV6N/A
1986JeepComanche2.8LV6N/A
1986JeepWagoneer2.8LV6N/A
1986OldsmobileCutlass Ciera2.8LV6N/A
1986OldsmobileFirenza2.0LL4N/A
1986OldsmobileFirenza2.8LV6N/A
1986Pontiac60002.8LV6N/A
1986PontiacFiero2.8LV6N/A
1986PontiacFirebird2.8LV6N/A
1986PontiacSunbird2.0LL4N/A
1985BuickCentury2.8LV6N/A
1985BuickSkyhawk2.0LL4N/A
1985BuickSkylark2.8LV6N/A
1985CadillacCimarron2.0LL4N/A
1985CadillacCimarron2.8LV6N/A
1985ChevroletCamaro2.8LV6N/A
1985ChevroletCavalier2.0LL4N/A
1985ChevroletCavalier2.8LV6N/A
1985ChevroletCelebrity2.8LV6N/A
1985ChevroletCitation II2.8LV6N/A
1985ChevroletS102.8LV6N/A
1985ChevroletS10 Blazer2.8LV6N/A
1985GMCS152.8LV6N/A
1985GMCS15 Jimmy2.8LV6N/A
1985JeepCherokee2.8LV6N/A
1985JeepWagoneer2.8LV6N/A
1985OldsmobileCutlass Ciera2.8LV6N/A
1985OldsmobileFirenza2.0LL4N/A
1985OldsmobileFirenza2.8LV6N/A
1985Pontiac60002.8LV6N/A
1985PontiacFiero2.8LV6N/A
1985PontiacFirebird2.8LV6N/A
1985PontiacJ2000 Sunbird2.0LL4N/A
1984BuickCentury2.8LV6N/A
1984BuickSkyhawk2.0LL4N/A
1984BuickSkylark2.8LV6N/A
1984CadillacCimarron2.0LL4N/A
1984ChevroletCamaro2.8LV6N/A
1984ChevroletCavalier2.0LL4N/A
1984ChevroletCelebrity2.8LV6N/A
1984ChevroletCitation II2.8LV6N/A
1984ChevroletS102.8LV6N/A
1984ChevroletS102.0LL4N/A
1984ChevroletS10 Blazer2.8LV6N/A
1984ChevroletS10 Blazer2.0LL4N/A
1984GMCS152.8LV6N/A
1984GMCS152.0LL4N/A
1984GMCS15 Jimmy2.8LV6N/A
1984GMCS15 Jimmy2.0LL4N/A
1984JeepCherokee2.8LV6N/A
1984JeepWagoneer2.8LV6N/A
1984OldsmobileCutlass Ciera2.8LV6N/A
1984OldsmobileFirenza2.0LL4N/A
1984OldsmobileOmega2.8LV6N/A
1984Pontiac60002.8LV6N/A
1984PontiacFirebird2.8LV6N/A
1984PontiacJ2000 Sunbird2.0LL4N/A
1984PontiacPhoenix2.8LV6N/A
1983BuickCentury2.8LV6N/A
1983BuickSkyhawk2.0LL4N/A
1983BuickSkylark2.8LV6N/A
1983CadillacCimarron2.0LL4N/A
1983ChevroletCamaro2.8LV6N/A
1983ChevroletCavalier2.0LL4N/A
1983ChevroletCelebrity2.8LV6N/A
1983ChevroletCitation2.8LV6N/A
1983ChevroletS102.8LV6N/A
1983ChevroletS102.0LL4N/A
1983ChevroletS10 Blazer2.8LV6N/A
1983ChevroletS10 Blazer2.0LL4N/A
1983GMCS152.8LV6N/A
1983GMCS152.0LL4N/A
1983GMCS15 Jimmy2.8LV6N/A
1983GMCS15 Jimmy2.0LL4N/A
1983OldsmobileCutlass Ciera2.8LV6N/A
1983OldsmobileFirenza2.0LL4N/A
1983OldsmobileOmega2.8LV6N/A
1983Pontiac60002.8LV6N/A
1983PontiacFirebird2.8LV6N/A
1983PontiacJ20002.0LL4N/A
1983PontiacPhoenix2.8LV6N/A
1982BuickCentury2.8LV6N/A
1982BuickSkyhawk1.8LL4N/A
1982BuickSkylark2.8LV6N/A
1982CadillacCimarron1.8LL4N/A
1982ChevroletCamaro2.8LV6N/A
1982ChevroletCavalier1.8LL4N/A
1982ChevroletCelebrity2.8LV6N/A
1982ChevroletCitation2.8LV6N/A
1982ChevroletS102.8LV6N/A
1982GMCS152.8LV6N/A
1982OldsmobileCutlass Ciera2.8LV6N/A
1982OldsmobileFirenza1.8LL4N/A
1982OldsmobileOmega2.8LV6N/A
1982Pontiac60002.8LV6N/A
1982PontiacFirebird2.8LV6N/A
1982PontiacJ20001.8LL4N/A
1982PontiacPhoenix2.8LV6N/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

79101830450B25934B25934VC

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.