HomeBrake > Gaskets and Sealing SystemsDorman 42081 Brake Master Cylinder Reservoir Cap Gasket
Part #: 42081

Dorman 42081 Brake Master Cylinder Reservoir Cap Gasket

470 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$25.20Free Shipping
Free ShippingNo Cost to Continental U.S.
Free Returns*Wrong fit? No cost
60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Chrysler, Dodge, Jeep, Plymouth, and Ram, 1500, 200, 2500, 300, 3500, 600, Acclaim, Aries, Aspen, Avenger, B100, B150, B1500, B200, B250, B2500, B300, B350, B3500, C/V, Caliber, Caravan, Challenger, Charger, Cherokee, Commander, Compass, D100, D150, D200, D250, D300, D350, D50, Dakota, Daytona, Fifth Avenue, Grand Caravan, Grand Cherokee, Grand Voyager, Imperial, Journey, Lancer, Laser, LeBaron, Magnum, New Yorker, Newport, Patriot, PB150, PB250, PB350, PT Cruiser, Ramcharger, Rampage, Reliant, Shadow, Spirit, Sundance, Town & Country, Viper, Voyager, W100, W150, W200, W250, W300, W350, and Wrangler
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Brake Master Cylinder Reservoir Cap Gasket for OE Fit

This Dorman brake master cylinder reservoir cap gasket is built to match the original gasket’s fit and function on specified vehicles. Made from rubber, it helps maintain a secure seal at the master cylinder reservoir cap for dependable brake system performance on Chrysler, Dodge, Jeep, Plymouth, and Ram applications.

  • Rubber construction for sealing performance and durability
  • Matches the original gasket’s fit and function on listed vehicles
  • Designed for brake master cylinder reservoir cap service
  • Fits a wide range of Chrysler, Dodge, Jeep, Plymouth, and Ram models
  • Part number 42081 for direct identification and ordering

Detailed Product Information

Dorman 42081 is a brake master cylinder reservoir cap gasket engineered as an OE-style replacement for vehicles that use a compatible reservoir cap design. It is used across many Chrysler, Dodge, Jeep, Plymouth, and Ram platforms, including applications such as Fits 2020 Dodge Charger, N/A, Fits 2019-2020 Jeep Cherokee, N/A, and Fits 2014-2020 Ram 2500, N/A. This part cross-references 420814 and 04683656AB for the same application.

The gasket’s rubber material is selected for sealing at the reservoir cap interface, where a consistent seal is important for brake fluid containment and system cleanliness. Part number 42081 is also listed for older and newer applications, including Fits 2007-2017 Jeep Compass, N/A and Fits 1978-1980 Dodge Aspen, N/A, making it a practical replacement for a broad range of brake master cylinder reservoir cap service needs.

Common Issues This Part Addresses

  • Brake fluid seepage around the master cylinder reservoir cap
  • Damaged, hardened, or flattened original cap gasket
  • Loss of sealing at the reservoir cap interface
  • Service replacement for worn brake master cylinder sealing components
  • Fitment replacement for OE-style reservoir cap gasket applications

Installation Notes and Tips

Confirm the reservoir cap style and vehicle application before installation. Clean the sealing surfaces on the master cylinder reservoir and cap, then inspect the cap for damage or distortion that could affect sealing. Verify the gasket seats evenly before returning the vehicle to service.

Quality Assurance

Dorman designs this gasket to match the original part’s fit and function and to deliver durable, reliable performance in specified brake system applications.

BrandDorman
Part Number42081
MaterialRubber
Package Contents2 brake master cylinder gasket

This part fits 470 vehicles. Search below:

YearMakeModelDrive TypeLitersCylindersFuel TypePositionNotes
2020Chrysler300N/A
2020DodgeChallengerN/A
2020DodgeChargerN/A
2020DodgeGrand CaravanN/A
2020DodgeJourneyN/A
2020JeepCherokeeN/A
2020Ram1500N/A
2020Ram25006.4LV8N/A
2020Ram35006.4LV8N/Aw/Single Rear Wheel (SRW)
2019DodgeJourneyN/A
2019JeepCherokeeN/A
2019Ram1500N/A
2019Ram25006.4LV8N/A
2019Ram35006.4LV8N/Aw/Single Rear Wheel (SRW)
2018DodgeJourneyN/A
2018JeepWranglerN/A
2018Ram25005.7LV8CNGN/A
2018Ram25006.4LV8N/A
2018Ram3500N/A
2017DodgeJourneyN/A
2017DodgeViperN/A
2017JeepCompassN/A
2017JeepPatriotN/A
2017JeepWranglerN/A
2017Ram25005.7LV8CNGN/A
2017Ram25006.4LV8N/A
2017Ram3500N/A
2016DodgeJourneyN/A
2016DodgeViperN/A
2016JeepCompassN/A
2016JeepPatriotN/A
2016JeepWranglerN/A
2016Ram25005.7LV8CNGN/A
2016Ram25006.4LV8N/A
2016Ram3500N/A
2015DodgeJourneyN/A
2015DodgeViperN/A
2015JeepCompassN/A
2015JeepPatriotN/A
2015JeepWranglerN/A
2015Ram25005.7LV8CNGN/A
2015Ram25006.4LV8N/A
2015Ram3500N/A
2014Chrysler200N/A
2014ChryslerTown & CountryN/A
2014DodgeAvengerN/A
2014DodgeGrand CaravanN/A
2014DodgeJourneyN/A
2014JeepCompassN/A
2014JeepPatriotN/A
2014JeepWranglerN/A
2014Ram25005.7LV8CNGN/A
2014Ram25006.4LV8N/A
2014Ram3500N/A
2014RamC/VN/A
2013ChryslerTown & CountryN/A
2013DodgeGrand CaravanN/A
2013JeepCompassN/A
2013JeepPatriotN/A
2013RamC/VN/A
2012ChryslerTown & CountryN/A
2012DodgeCaliberN/A
2012DodgeGrand CaravanN/A
2012JeepCompassN/A
2012JeepPatriotN/A
2012RamC/VN/A
2011ChryslerTown & CountryN/A
2011DodgeCaliberN/A
2011DodgeGrand CaravanN/A
2011JeepCompassN/A
2011JeepPatriotN/A
2010ChryslerPT CruiserN/A
2010ChryslerTown & CountryN/A
2010DodgeCaliberN/A
2010DodgeGrand CaravanN/A
2010JeepCommanderN/A
2010JeepCompassN/A
2010JeepGrand CherokeeN/A
2010JeepPatriotN/A
2009ChryslerPT CruiserN/A
2009ChryslerTown & CountryN/A
2009DodgeCaliberN/A
2009DodgeGrand CaravanN/A
2009JeepCommanderN/A
2009JeepCompassN/A
2009JeepGrand CherokeeN/A
2009JeepPatriotN/A
2008ChryslerPT CruiserN/A
2008DodgeCaliberN/A
2008JeepCommanderN/A
2008JeepCompassN/A
2008JeepGrand CherokeeN/A
2008JeepPatriotN/A
2007ChryslerPT CruiserN/A
2007DodgeCaliberN/A
2007JeepCommanderN/A
2007JeepCompassN/A
2007JeepGrand CherokeeN/A
2007JeepPatriotN/A
2006ChryslerPT CruiserN/A
2006JeepCommanderN/A
2006JeepGrand CherokeeN/A
2005ChryslerPT CruiserN/A
2005JeepGrand CherokeeN/A
2004JeepGrand CherokeeN/A
2003JeepGrand CherokeeN/A
2002JeepGrand CherokeeN/A
2001JeepGrand CherokeeN/A
2000JeepGrand CherokeeN/A
1999JeepGrand CherokeeN/A
1998DodgeB1500N/A
1998DodgeB2500N/A
1998DodgeB3500N/A
1997DodgeB1500N/A
1997DodgeB2500N/A
1997DodgeB3500N/A
1996DodgeB1500N/A
1996DodgeB2500N/A
1996DodgeB3500N/A
1996DodgeDakotaN/A
1995ChryslerLeBaronN/A
1995ChryslerTown & CountryN/A
1995DodgeB1500N/A
1995DodgeB2500N/A
1995DodgeB3500N/A
1995DodgeCaravanN/A
1995DodgeDakotaN/A
1995DodgeGrand CaravanN/A
1995DodgeSpiritN/A
1995PlymouthAcclaimN/A
1995PlymouthGrand VoyagerN/A
1995PlymouthVoyagerN/A
1994ChryslerLeBaronN/A
1994ChryslerTown & CountryN/A
1994DodgeB150N/A
1994DodgeB250N/A
1994DodgeB350N/A
1994DodgeCaravanN/A
1994DodgeDakotaN/A
1994DodgeGrand CaravanN/A
1994DodgeShadowN/A
1994DodgeSpiritN/A
1994PlymouthAcclaimN/A
1994PlymouthGrand VoyagerN/A
1994PlymouthSundanceN/A
1994PlymouthVoyagerN/A
1993ChryslerLeBaronN/A
1993ChryslerNew YorkerN/A
1993DodgeB150N/A
1993DodgeB250N/A
1993DodgeB350N/A
1993DodgeCaravanN/A
1993DodgeD150N/A
1993DodgeDakotaN/A
1993DodgeDaytonaN/A
1993DodgeGrand CaravanN/A
1993DodgeRamchargerN/A
1993DodgeShadowN/A
1993DodgeSpiritN/A
1993DodgeW150N/A
1993PlymouthAcclaimN/A
1993PlymouthGrand VoyagerN/A
1993PlymouthSundanceN/A
1993PlymouthVoyagerN/A
1992ChryslerLeBaronN/A
1992ChryslerNew YorkerN/A
1992DodgeB150N/A
1992DodgeB250N/A
1992DodgeB350N/A
1992DodgeCaravanN/A
1992DodgeD150N/A
1992DodgeDakotaN/A
1992DodgeDaytonaN/A
1992DodgeGrand CaravanN/A
1992DodgeRamchargerN/A
1992DodgeShadowN/A
1992DodgeSpiritN/A
1992DodgeW150N/A
1992PlymouthAcclaimN/A
1992PlymouthGrand VoyagerN/A
1992PlymouthSundanceN/A
1992PlymouthVoyagerN/A
1991ChryslerLeBaronN/A
1991ChryslerNew YorkerN/A
1991DodgeB150N/A
1991DodgeB250N/A
1991DodgeB350N/A
1991DodgeCaravanN/A
1991DodgeD150N/A
1991DodgeDakotaN/A
1991DodgeDaytonaN/A
1991DodgeGrand CaravanN/A
1991DodgeRamchargerN/A
1991DodgeShadowN/A
1991DodgeSpiritN/A
1991DodgeW150N/A
1991PlymouthAcclaimN/A
1991PlymouthGrand VoyagerN/A
1991PlymouthSundanceN/A
1991PlymouthVoyagerN/A
1990ChryslerLeBaronN/A
1990ChryslerNew YorkerN/A
1990ChryslerTown & CountryN/A
1990DodgeB150N/A
1990DodgeB250N/A
1990DodgeB350N/A
1990DodgeCaravanN/A
1990DodgeD150N/A
1990DodgeDakotaN/A
1990DodgeDaytonaN/A
1990DodgeGrand CaravanN/A
1990DodgeRamchargerN/A
1990DodgeShadowN/A
1990DodgeSpiritN/A
1990DodgeW150N/A
1990PlymouthAcclaimN/A
1990PlymouthGrand VoyagerN/A
1990PlymouthSundanceN/A
1990PlymouthVoyagerN/A
1989ChryslerFifth AvenueN/A
1989ChryslerLeBaronN/A
1989ChryslerNew YorkerN/A
1989DodgeAriesN/A
1989DodgeB150N/A
1989DodgeB250N/A
1989DodgeB350N/A
1989DodgeCaravanN/A
1989DodgeD100N/A
1989DodgeD150N/A
1989DodgeDakotaN/A
1989DodgeDaytonaN/A
1989DodgeGrand CaravanN/A
1989DodgeLancerN/A
1989DodgeRamchargerN/A
1989DodgeShadowN/A
1989DodgeSpiritN/A
1989DodgeW100N/A
1989DodgeW150N/A
1989PlymouthAcclaimN/A
1989PlymouthGrand VoyagerN/A
1989PlymouthReliantN/A
1989PlymouthSundanceN/A
1989PlymouthVoyagerN/A
1988ChryslerFifth AvenueN/A
1988ChryslerLeBaronN/A
1988ChryslerNew YorkerN/A
1988ChryslerTown & CountryN/A
1988Dodge600N/A
1988DodgeAriesN/A
1988DodgeB150N/A
1988DodgeB250N/A
1988DodgeB350N/A
1988DodgeCaravanN/A
1988DodgeD100N/A
1988DodgeD150N/A
1988DodgeDakotaN/A
1988DodgeDaytonaN/A
1988DodgeGrand CaravanN/A
1988DodgeLancerN/A
1988DodgeRamchargerN/A
1988DodgeShadowN/A
1988DodgeW100N/A
1988DodgeW150N/A
1988PlymouthGrand VoyagerN/A
1988PlymouthReliantN/A
1988PlymouthSundanceN/A
1988PlymouthVoyagerN/A
1987ChryslerFifth AvenueN/A
1987ChryslerLeBaronN/A
1987ChryslerNew YorkerN/A
1987ChryslerTown & CountryN/A
1987Dodge600N/A
1987DodgeAriesN/A
1987DodgeB150N/A
1987DodgeB250N/A
1987DodgeB350N/A
1987DodgeCaravanN/A
1987DodgeChargerN/A
1987DodgeD100N/A
1987DodgeD150N/A
1987DodgeDakotaN/A
1987DodgeDaytonaN/A
1987DodgeLancerN/A
1987DodgeRamchargerN/A
1987DodgeShadowN/A
1987DodgeW100N/A
1987DodgeW150N/A
1987PlymouthReliantN/A
1987PlymouthSundanceN/A
1987PlymouthVoyagerN/A
1986ChryslerFifth AvenueN/A
1986ChryslerLaserN/A
1986ChryslerLeBaronN/A
1986ChryslerNew YorkerN/A
1986ChryslerTown & CountryN/A
1986Dodge600N/A
1986DodgeAriesN/A
1986DodgeB150N/A
1986DodgeB250N/A
1986DodgeB350N/A
1986DodgeCaravanN/A
1986DodgeChargerN/A
1986DodgeD100N/A
1986DodgeD150N/A
1986DodgeDaytonaN/A
1986DodgeLancerN/A
1986DodgeRamchargerN/A
1986DodgeW100N/A
1986DodgeW150N/A
1986PlymouthReliantN/A
1986PlymouthVoyagerN/A
1985ChryslerFifth AvenueN/A
1985ChryslerLaserN/A
1985ChryslerLeBaronN/A
1985ChryslerNew YorkerN/A
1985ChryslerTown & CountryN/A
1985Dodge600N/A
1985DodgeAriesN/A
1985DodgeB150N/A
1985DodgeB250N/A
1985DodgeB350N/A
1985DodgeCaravanN/A
1985DodgeChargerN/A
1985DodgeD150N/AScrew On Type Cap
1985DodgeD250N/AScrew On Type Cap
1985DodgeD350N/AScrew On Type Cap
1985DodgeDaytonaN/A
1985DodgeLancerN/A
1985DodgeRamchargerN/A
1985DodgeW150N/AScrew On Type Cap
1985DodgeW250N/AScrew On Type Cap
1985DodgeW350N/AScrew On Type Cap
1985PlymouthReliantN/A
1985PlymouthVoyagerN/A
1984ChryslerFifth AvenueN/A
1984ChryslerLaserN/A
1984ChryslerLeBaronN/A
1984ChryslerNew YorkerN/A
1984ChryslerTown & CountryN/A
1984Dodge600N/A
1984DodgeAriesN/A
1984DodgeB150N/A
1984DodgeB250N/A
1984DodgeB350N/A
1984DodgeCaravanN/A
1984DodgeChargerN/A
1984DodgeD150N/AScrew On Type Cap
1984DodgeD250N/AScrew On Type Cap
1984DodgeD350N/AScrew On Type Cap
1984DodgeDaytonaN/A
1984DodgeRamchargerN/A
1984DodgeRampageN/A
1984DodgeW150N/AScrew On Type Cap
1984DodgeW250N/AScrew On Type Cap
1984DodgeW350N/AScrew On Type Cap
1984PlymouthReliantN/A
1984PlymouthVoyagerN/A
1983ChryslerFifth AvenueN/A
1983ChryslerImperialN/A
1983ChryslerLeBaronN/A
1983ChryslerNew YorkerN/A
1983ChryslerTown & CountryN/A
1983Dodge600N/A
1983DodgeAriesN/A
1983DodgeB150N/A
1983DodgeB250N/A
1983DodgeB350N/A
1983DodgeChargerN/A
1983DodgeD150N/AScrew On Type Cap
1983DodgeD250N/AScrew On Type Cap
1983DodgeD350N/AScrew On Type Cap
1983DodgeRamchargerN/A
1983DodgeRampageN/A
1983DodgeW150N/AScrew On Type Cap
1983DodgeW250N/AScrew On Type Cap
1983DodgeW350N/AScrew On Type Cap
1983PlymouthPB150N/A
1983PlymouthPB250N/A
1983PlymouthPB350N/A
1983PlymouthReliantN/A
1982ChryslerImperialN/A
1982ChryslerLeBaronN/A
1982ChryslerNew YorkerN/A
1982ChryslerTown & CountryN/A
1982DodgeAriesN/A
1982DodgeB150N/A
1982DodgeB250N/A
1982DodgeB350N/A
1982DodgeD150N/AScrew On Type Cap
1982DodgeD250N/AScrew On Type Cap
1982DodgeD350N/AScrew On Type Cap
1982DodgeD50RWDN/AScrew On Type Cap
1982DodgeRamchargerN/A
1982DodgeRampageN/A
1982DodgeW150N/AScrew On Type Cap
1982DodgeW250N/AScrew On Type Cap
1982DodgeW350N/AScrew On Type Cap
1982PlymouthPB150N/A
1982PlymouthPB250N/A
1982PlymouthPB350N/A
1982PlymouthReliantN/A
1981ChryslerImperialN/A
1981ChryslerLeBaronN/A
1981ChryslerNew YorkerN/A
1981ChryslerNewportN/A
1981ChryslerTown & CountryN/A
1981DodgeAriesN/A
1981DodgeB150N/AAluminum Cylinder; Plastic Reservoir
1981DodgeB250N/AAluminum Cylinder; Plastic Reservoir
1981DodgeB350N/AAluminum Cylinder; Plastic Reservoir
1981DodgeD150N/AAluminum Cylinder; Plastic Reservoir
1981DodgeD250N/AAluminum Cylinder; Plastic Reservoir
1981DodgeD350N/AAluminum Cylinder; Plastic Reservoir
1981DodgeD50N/AAluminum Cylinder; Plastic Reservoir
1981DodgeRamchargerN/A
1981DodgeW150N/AAluminum Cylinder; Plastic Reservoir
1981DodgeW250N/AAluminum Cylinder; Plastic Reservoir
1981DodgeW350N/AAluminum Cylinder; Plastic Reservoir
1981PlymouthPB150N/AAluminum Cylinder; Plastic Reservoir
1981PlymouthPB250N/AAluminum Cylinder; Plastic Reservoir
1981PlymouthPB350N/AAluminum Cylinder; Plastic Reservoir
1981PlymouthReliantN/A
1980ChryslerLeBaronN/A
1980ChryslerNew YorkerN/A
1980ChryslerNewportN/A
1980ChryslerTown & CountryN/A
1980DodgeAspenN/A
1980DodgeB100N/AAluminum Cylinder; Plastic Reservoir
1980DodgeB200N/AAluminum Cylinder; Plastic Reservoir
1980DodgeB300N/AAluminum Cylinder; Plastic Reservoir
1980DodgeD150N/AAluminum Cylinder; Plastic Reservoir
1980DodgeD200N/AAluminum Cylinder; Plastic Reservoir
1980DodgeD300N/AAluminum Cylinder; Plastic Reservoir
1980DodgeD50N/AAluminum Cylinder; Plastic Reservoir
1980DodgeRamchargerN/A
1980DodgeW150N/AAluminum Cylinder; Plastic Reservoir
1980DodgeW200N/AAluminum Cylinder; Plastic Reservoir
1980DodgeW300N/AAluminum Cylinder; Plastic Reservoir
1979ChryslerLeBaronN/A
1979ChryslerNew YorkerN/A
1979ChryslerNewportN/A
1979ChryslerTown & CountryN/A
1979DodgeAspenN/A
1979DodgeB100N/AAluminum Cylinder; Plastic Reservoir
1979DodgeB200N/AAluminum Cylinder; Plastic Reservoir
1979DodgeB300N/AAluminum Cylinder; Plastic Reservoir
1979DodgeD100N/AAluminum Cylinder; Plastic Reservoir
1979DodgeD150N/AAluminum Cylinder; Plastic Reservoir
1979DodgeD200N/AAluminum Cylinder; Plastic Reservoir
1979DodgeD300N/AAluminum Cylinder; Plastic Reservoir
1979DodgeD50N/AAluminum Cylinder; Plastic Reservoir
1979DodgeMagnumN/A
1979DodgeRamchargerN/A
1979DodgeW150N/AAluminum Cylinder; Plastic Reservoir
1979DodgeW200N/AAluminum Cylinder; Plastic Reservoir
1979DodgeW300N/AAluminum Cylinder; Plastic Reservoir
1978ChryslerLeBaronN/AAluminum Cylinder; Plastic Reservoir
1978ChryslerTown & CountryN/AAluminum Cylinder; Plastic Reservoir
1978DodgeAspenN/AAluminum Cylinder; Plastic Reservoir
1978DodgeB100N/AAluminum Cylinder; Plastic Reservoir
1978DodgeB200N/AAluminum Cylinder; Plastic Reservoir
1978DodgeB300N/AAluminum Cylinder; Plastic Reservoir
1978DodgeD100N/AAluminum Cylinder; Plastic Reservoir
1978DodgeD150N/AAluminum Cylinder; Plastic Reservoir
1978DodgeD200N/AAluminum Cylinder; Plastic Reservoir
1978DodgeD300N/AAluminum Cylinder; Plastic Reservoir
1978DodgeRamchargerN/A
1978DodgeW150N/AAluminum Cylinder; Plastic Reservoir
1978DodgeW200N/AAluminum Cylinder; Plastic Reservoir
1978DodgeW300N/AAluminum Cylinder; Plastic Reservoir

* 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:

04683656AB4208145204056

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