Dorman 42106 Brake Master Cylinder Reservoir Cap Gasket

Name: Dorman 42106 Brake Master Cylinder Reservoir Cap Gasket
Brand: Dorman
SKU: BCZF-42106
Price: 25.42 USD
Availability: InStock

N/A

344 vehicles fit this part

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OE Direct Replacement — Bolt-on fit, no modifications needed

Fitment: Cadillac, Chevrolet, GMC, Dodge, Buick, Oldsmobile, and Pontiac, Escalade, C2500, K2500, Suburban 1500, Suburban 2500, Tahoe, Yukon, Yukon XL 1500, Yukon XL 2500, C1500 Suburban, C2500 Suburban, K1500 Suburban, K2500 Suburban, C1500, K1500, Ram 1500, Ram 2500, Blazer, C3500, K3500, Electra, LeSabre, Reatta, Riviera, DeVille, Eldorado, Fleetwood, Seville, 98, Delta 88, Toronado, Bonneville, Century, Skyhawk, Skylark, Somerset, Cimarron, Cavalier, Celebrity, Calais, Cutlass Ciera, Firenza, 6000, Grand Am, Sunbird, Somerset Regal, Citation II, J2000 Sunbird, Cutlass Calais, Omega, Phoenix, Citation, and J2000

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Not what you need? See all Brake Master Cylinder Reservoir Cap Gasket options

Brake Master Cylinder Reservoir Cap Gasket for OE Fit

Dorman 42106 is a brake master cylinder reservoir cap gasket made from rubber for a direct-fit replacement on specified vehicles. It is built to match the original gasket’s fit and function, helping maintain a proper seal at the master cylinder reservoir cap on applications such as Chevrolet C1500, GMC K1500, and Dodge Ram 1500.

Key Features

Rubber construction for sealing performance and durability
Matches the original gasket’s fit and function on listed applications
Supports a secure seal at the brake master cylinder reservoir cap
Designed for a direct replacement on a wide range of GM and Dodge vehicles
Part number 42106 for easy identification

Detailed Description

This Dorman brake master cylinder reservoir cap gasket is engineered as an OE-style replacement for vehicles across the 1982-2000 model years. It is used on many Chevrolet, GMC, Cadillac, Buick, Oldsmobile, Pontiac, and Dodge applications, including 1988-1998 Chevrolet C1500, 1992-1999 GMC K1500 Suburban, and 1994-1997 Dodge Ram 2500. The rubber material is selected to help maintain a dependable seal where the reservoir cap meets the master cylinder, supporting consistent brake fluid containment on the specified fitments. This part cross-references OE numbers 4746396 and 18016435 for the same application.

What This Part Helps Address

Brake fluid seepage around the master cylinder reservoir cap
Loss of sealing at the reservoir opening
Cracked, hardened, or worn original gasket material
Service issues during brake master cylinder maintenance
Fitment concerns when replacing an aged OE gasket

Installation Notes and Tips

Verify the master cylinder reservoir cap style and vehicle application before installation. Clean the sealing surfaces thoroughly so the new gasket seats evenly. For best results, inspect the cap and reservoir for wear, distortion, or contamination before reassembly. Fits 1988-1998 Chevrolet C1500, N/A; fits 1992-1999 GMC K1500 Suburban, N/A; fits 1994-1997 Dodge Ram 2500, N/A.

Quality Assurance

Dorman designs this gasket to match the original part’s fit and function on specified vehicles. The rubber construction supports reliable sealing performance for the listed applications, including Chevrolet C2500, GMC Yukon, and Cadillac Escalade fitments.

Brand	Dorman
Part Number	42106
Material	Rubber
Package Contents	1 Master Cylinder Gasket

This part fits 344 vehicles. Search below:

Year	Make	Model	Drive Type	Position	Notes
2000	Cadillac	Escalade		N/A
2000	Chevrolet	C2500		N/A
2000	Chevrolet	K2500		N/A
2000	Chevrolet	Suburban 1500		N/A
2000	Chevrolet	Suburban 2500		N/A
2000	Chevrolet	Tahoe		N/A
2000	GMC	C2500		N/A
2000	GMC	Yukon		N/A
2000	GMC	Yukon XL 1500		N/A
2000	GMC	Yukon XL 2500		N/A
1999	Cadillac	Escalade		N/A
1999	Chevrolet	C1500 Suburban		N/A
1999	Chevrolet	C2500		N/A
1999	Chevrolet	C2500 Suburban		N/A
1999	Chevrolet	K1500 Suburban		N/A
1999	Chevrolet	K2500		N/A
1999	Chevrolet	K2500 Suburban		N/A
1999	Chevrolet	Tahoe		N/A
1999	GMC	C1500 Suburban		N/A
1999	GMC	C2500		N/A
1999	GMC	C2500 Suburban		N/A
1999	GMC	K1500 Suburban		N/A
1999	GMC	K2500 Suburban		N/A
1999	GMC	Yukon		N/A
1998	Chevrolet	C1500		N/A
1998	Chevrolet	C1500 Suburban		N/A
1998	Chevrolet	C2500		N/A
1998	Chevrolet	C2500 Suburban		N/A
1998	Chevrolet	K1500		N/A
1998	Chevrolet	K1500 Suburban		N/A
1998	Chevrolet	K2500		N/A
1998	Chevrolet	K2500 Suburban		N/A
1998	Chevrolet	Tahoe		N/A
1998	GMC	C1500		N/A
1998	GMC	C1500 Suburban		N/A
1998	GMC	C2500		N/A
1998	GMC	C2500 Suburban		N/A
1998	GMC	K1500		N/A
1998	GMC	K1500 Suburban		N/A
1998	GMC	K2500		N/A
1998	GMC	K2500 Suburban		N/A
1998	GMC	Yukon		N/A
1997	Chevrolet	C1500		N/A
1997	Chevrolet	C1500 Suburban		N/A
1997	Chevrolet	C2500		N/A
1997	Chevrolet	C2500 Suburban		N/A
1997	Chevrolet	K1500		N/A
1997	Chevrolet	K1500 Suburban		N/A
1997	Chevrolet	K2500		N/A
1997	Chevrolet	K2500 Suburban		N/A
1997	Chevrolet	Tahoe		N/A
1997	Dodge	Ram 1500		N/A
1997	Dodge	Ram 2500	RWD	N/A
1997	Dodge	Ram 2500	4WD	N/A	7,500 Lb. GVW
1997	GMC	C1500		N/A
1997	GMC	C1500 Suburban		N/A
1997	GMC	C2500		N/A
1997	GMC	C2500 Suburban		N/A
1997	GMC	K1500		N/A
1997	GMC	K1500 Suburban		N/A
1997	GMC	K2500		N/A
1997	GMC	K2500 Suburban		N/A
1997	GMC	Yukon		N/A
1996	Chevrolet	C1500		N/A
1996	Chevrolet	C1500 Suburban		N/A
1996	Chevrolet	C2500		N/A
1996	Chevrolet	C2500 Suburban		N/A
1996	Chevrolet	K1500		N/A
1996	Chevrolet	K1500 Suburban		N/A
1996	Chevrolet	K2500		N/A
1996	Chevrolet	K2500 Suburban		N/A
1996	Chevrolet	Tahoe		N/A
1996	Dodge	Ram 1500		N/A
1996	Dodge	Ram 2500	RWD	N/A
1996	Dodge	Ram 2500	4WD	N/A	7,500 Lb. GVW
1996	GMC	C1500		N/A
1996	GMC	C1500 Suburban		N/A
1996	GMC	C2500		N/A
1996	GMC	C2500 Suburban		N/A
1996	GMC	K1500		N/A
1996	GMC	K1500 Suburban		N/A
1996	GMC	K2500		N/A
1996	GMC	K2500 Suburban		N/A
1996	GMC	Yukon		N/A
1995	Chevrolet	C1500		N/A
1995	Chevrolet	C1500 Suburban		N/A
1995	Chevrolet	C2500		N/A
1995	Chevrolet	C2500 Suburban		N/A
1995	Chevrolet	K1500		N/A
1995	Chevrolet	K1500 Suburban		N/A
1995	Chevrolet	K2500		N/A
1995	Chevrolet	K2500 Suburban		N/A
1995	Chevrolet	Tahoe		N/A
1995	Dodge	Ram 1500		N/A
1995	Dodge	Ram 2500	RWD	N/A
1995	Dodge	Ram 2500	4WD	N/A	7,500 Lb. GVW
1995	GMC	C1500		N/A
1995	GMC	C1500 Suburban		N/A
1995	GMC	C2500		N/A
1995	GMC	C2500 Suburban		N/A
1995	GMC	K1500		N/A
1995	GMC	K1500 Suburban		N/A
1995	GMC	K2500		N/A
1995	GMC	K2500 Suburban		N/A
1995	GMC	Yukon		N/A
1994	Chevrolet	Blazer		N/A
1994	Chevrolet	C1500		N/A
1994	Chevrolet	C1500 Suburban		N/A
1994	Chevrolet	C2500		N/A
1994	Chevrolet	C2500 Suburban		N/A
1994	Chevrolet	C3500		N/A	Rear Drum Brakes or Single Rear Wheel (SRW)
1994	Chevrolet	K1500		N/A
1994	Chevrolet	K1500 Suburban		N/A
1994	Chevrolet	K2500		N/A
1994	Chevrolet	K2500 Suburban		N/A
1994	Chevrolet	K3500		N/A	Rear Drum Brakes or Single Rear Wheel (SRW)
1994	Dodge	Ram 1500		N/A
1994	Dodge	Ram 2500	RWD	N/A
1994	Dodge	Ram 2500	4WD	N/A	7,500 Lb. GVW
1994	GMC	C1500		N/A
1994	GMC	C1500 Suburban		N/A
1994	GMC	C2500		N/A
1994	GMC	C2500 Suburban		N/A
1994	GMC	C3500		N/A	Rear Drum Brakes or Single Rear Wheel (SRW)
1994	GMC	K1500		N/A
1994	GMC	K1500 Suburban		N/A
1994	GMC	K2500		N/A
1994	GMC	K2500 Suburban		N/A
1994	GMC	K3500		N/A	Rear Drum Brakes or Single Rear Wheel (SRW)
1994	GMC	Yukon		N/A
1993	Chevrolet	Blazer		N/A
1993	Chevrolet	C1500		N/A
1993	Chevrolet	C1500 Suburban		N/A
1993	Chevrolet	C2500		N/A
1993	Chevrolet	C2500 Suburban		N/A
1993	Chevrolet	C3500		N/A	Rear Drum Brakes or Single Rear Wheel (SRW)
1993	Chevrolet	K1500		N/A
1993	Chevrolet	K1500 Suburban		N/A
1993	Chevrolet	K2500		N/A
1993	Chevrolet	K2500 Suburban		N/A
1993	Chevrolet	K3500		N/A	Rear Drum Brakes or Single Rear Wheel (SRW)
1993	GMC	C1500		N/A
1993	GMC	C1500 Suburban		N/A
1993	GMC	C2500		N/A
1993	GMC	C2500 Suburban		N/A
1993	GMC	C3500		N/A	Rear Drum Brakes or Single Rear Wheel (SRW)
1993	GMC	K1500		N/A
1993	GMC	K1500 Suburban		N/A
1993	GMC	K2500		N/A
1993	GMC	K2500 Suburban		N/A
1993	GMC	K3500		N/A	Rear Drum Brakes or Single Rear Wheel (SRW)
1993	GMC	Yukon		N/A
1992	Chevrolet	Blazer		N/A
1992	Chevrolet	C1500		N/A
1992	Chevrolet	C1500 Suburban		N/A
1992	Chevrolet	C2500		N/A
1992	Chevrolet	C2500 Suburban		N/A
1992	Chevrolet	C3500		N/A	Rear Drum Brakes or Single Rear Wheel (SRW)
1992	Chevrolet	K1500		N/A
1992	Chevrolet	K1500 Suburban		N/A
1992	Chevrolet	K2500		N/A
1992	Chevrolet	K2500 Suburban		N/A
1992	Chevrolet	K3500		N/A	Rear Drum Brakes or Single Rear Wheel (SRW)
1992	GMC	C1500		N/A
1992	GMC	C1500 Suburban		N/A
1992	GMC	C2500		N/A
1992	GMC	C2500 Suburban		N/A
1992	GMC	C3500		N/A	Rear Drum Brakes or Single Rear Wheel (SRW)
1992	GMC	K1500		N/A
1992	GMC	K1500 Suburban		N/A
1992	GMC	K2500		N/A
1992	GMC	K2500 Suburban		N/A
1992	GMC	K3500		N/A	Rear Drum Brakes or Single Rear Wheel (SRW)
1992	GMC	Yukon		N/A
1991	Chevrolet	C1500		N/A
1991	Chevrolet	C2500		N/A
1991	Chevrolet	C3500		N/A	Rear Drum Brakes
1991	Chevrolet	K1500		N/A
1991	Chevrolet	K2500		N/A
1991	Chevrolet	K3500		N/A	Rear Drum Brakes
1991	GMC	C1500		N/A
1991	GMC	C2500		N/A
1991	GMC	C3500		N/A	Rear Drum Brakes
1991	GMC	K1500		N/A
1991	GMC	K2500		N/A
1991	GMC	K3500		N/A	Rear Drum Brakes
1990	Buick	LeSabre		N/A
1990	Buick	Reatta		N/A
1990	Buick	Riviera		N/A
1990	Cadillac	DeVille		N/A
1990	Cadillac	Eldorado		N/A
1990	Cadillac	Fleetwood		N/A	wo/Anti-Lock Brake System (ABS)
1990	Cadillac	Seville		N/A
1990	Chevrolet	C1500		N/A
1990	Chevrolet	C2500		N/A
1990	Chevrolet	C3500		N/A	Rear Drum Brakes
1990	Chevrolet	K1500		N/A
1990	Chevrolet	K2500		N/A
1990	Chevrolet	K3500		N/A	Rear Drum Brakes
1990	GMC	C1500		N/A
1990	GMC	C2500		N/A
1990	GMC	C3500		N/A	Rear Drum Brakes
1990	GMC	K1500		N/A
1990	GMC	K2500		N/A
1990	GMC	K3500		N/A	Rear Drum Brakes
1990	Oldsmobile	98		N/A
1990	Oldsmobile	Delta 88		N/A
1990	Oldsmobile	Toronado		N/A
1990	Pontiac	Bonneville		N/A
1989	Buick	LeSabre		N/A
1989	Buick	Reatta		N/A
1989	Buick	Riviera		N/A
1989	Cadillac	DeVille		N/A
1989	Cadillac	Eldorado		N/A
1989	Cadillac	Fleetwood		N/A
1989	Cadillac	Seville		N/A
1989	Chevrolet	C1500		N/A
1989	Chevrolet	C2500		N/A
1989	Chevrolet	C3500		N/A	Rear Drum Brakes
1989	Chevrolet	K1500		N/A
1989	Chevrolet	K2500		N/A
1989	Chevrolet	K3500		N/A	Rear Drum Brakes
1989	GMC	C1500		N/A
1989	GMC	C2500		N/A
1989	GMC	C3500		N/A	Rear Drum Brakes
1989	GMC	K1500		N/A
1989	GMC	K2500		N/A
1989	GMC	K3500		N/A	Rear Drum Brakes
1989	Oldsmobile	98		N/A
1989	Oldsmobile	Delta 88		N/A
1989	Oldsmobile	Toronado		N/A
1989	Pontiac	Bonneville		N/A
1988	Buick	LeSabre		N/A
1988	Buick	Reatta		N/A
1988	Buick	Riviera		N/A
1988	Cadillac	DeVille		N/A
1988	Cadillac	Eldorado		N/A
1988	Cadillac	Fleetwood		N/A
1988	Cadillac	Seville		N/A
1988	Chevrolet	C1500		N/A
1988	Chevrolet	C2500		N/A
1988	Chevrolet	C3500		N/A	Rear Drum Brakes
1988	Chevrolet	K1500		N/A
1988	Chevrolet	K2500		N/A
1988	Chevrolet	K3500		N/A	Rear Drum Brakes
1988	GMC	C1500		N/A
1988	GMC	C2500		N/A
1988	GMC	C3500		N/A	Rear Drum Brakes
1988	GMC	K1500		N/A
1988	GMC	K2500		N/A
1988	GMC	K3500		N/A	Rear Drum Brakes
1988	Oldsmobile	98		N/A
1988	Oldsmobile	Delta 88		N/A
1988	Oldsmobile	Toronado		N/A
1988	Pontiac	Bonneville		N/A
1987	Buick	LeSabre		N/A
1987	Buick	Riviera		N/A
1987	Cadillac	DeVille		N/A
1987	Cadillac	Eldorado		N/A
1987	Cadillac	Fleetwood		N/A
1987	Cadillac	Seville		N/A
1987	Oldsmobile	98		N/A
1987	Oldsmobile	Delta 88		N/A
1987	Oldsmobile	Toronado		N/A
1987	Pontiac	Bonneville		N/A
1986	Buick	Century		N/A
1986	Buick	LeSabre		N/A
1986	Buick	Riviera		N/A
1986	Buick	Skyhawk		N/A
1986	Buick	Skylark		N/A
1986	Cadillac	Cimarron		N/A
1986	Cadillac	DeVille		N/A
1986	Cadillac	Eldorado		N/A
1986	Cadillac	Fleetwood	FWD	N/A
1986	Cadillac	Seville		N/A
1986	Chevrolet	Cavalier		N/A
1986	Chevrolet	Celebrity		N/A
1986	Oldsmobile	98		N/A
1986	Oldsmobile	Calais		N/A
1986	Oldsmobile	Cutlass Ciera		N/A
1986	Oldsmobile	Delta 88		N/A
1986	Oldsmobile	Firenza		N/A
1986	Oldsmobile	Toronado		N/A
1986	Pontiac	6000		N/A
1986	Pontiac	Grand Am		N/A
1986	Pontiac	Sunbird		N/A
1985	Buick	Century		N/A
1985	Buick	Skyhawk		N/A
1985	Buick	Skylark		N/A
1985	Cadillac	Cimarron		N/A
1985	Cadillac	DeVille		N/A
1985	Cadillac	Fleetwood	FWD	N/A
1985	Chevrolet	Cavalier		N/A
1985	Chevrolet	Celebrity		N/A
1985	Chevrolet	Citation II		N/A
1985	Oldsmobile	98		N/A
1985	Oldsmobile	Calais		N/A
1985	Oldsmobile	Cutlass Ciera		N/A
1985	Oldsmobile	Firenza		N/A
1985	Pontiac	6000		N/A
1985	Pontiac	Grand Am		N/A
1985	Pontiac	J2000 Sunbird		N/A
1984	Buick	Century		N/A
1984	Buick	Skyhawk		N/A
1984	Buick	Skylark		N/A
1984	Cadillac	Cimarron		N/A
1984	Chevrolet	Cavalier		N/A
1984	Chevrolet	Celebrity		N/A
1984	Chevrolet	Citation II		N/A
1984	Oldsmobile	Cutlass Calais		N/A
1984	Oldsmobile	Cutlass Ciera		N/A
1984	Oldsmobile	Firenza		N/A
1984	Oldsmobile	Omega		N/A
1984	Pontiac	6000		N/A
1984	Pontiac	J2000 Sunbird		N/A
1984	Pontiac	Phoenix		N/A
1983	Buick	Century		N/A
1983	Buick	Skyhawk		N/A
1983	Buick	Skylark		N/A
1983	Cadillac	Cimarron		N/A
1983	Chevrolet	Cavalier		N/A
1983	Chevrolet	Celebrity		N/A
1983	Chevrolet	Citation		N/A
1983	Oldsmobile	Cutlass Calais		N/A
1983	Oldsmobile	Cutlass Ciera		N/A
1983	Oldsmobile	Firenza		N/A
1983	Oldsmobile	Omega		N/A
1983	Pontiac	6000		N/A
1983	Pontiac	J2000		N/A
1983	Pontiac	Phoenix		N/A
1982	Buick	Century		N/A
1982	Buick	Skyhawk		N/A
1982	Buick	Skylark		N/A
1982	Cadillac	Cimarron		N/A
1982	Chevrolet	Cavalier		N/A
1982	Chevrolet	Celebrity		N/A
1982	Chevrolet	Citation		N/A
1982	Oldsmobile	Cutlass Calais		N/A
1982	Oldsmobile	Cutlass Ciera		N/A
1982	Oldsmobile	Firenza		N/A
1982	Oldsmobile	Omega		N/A
1982	Pontiac	6000		N/A
1982	Pontiac	J2000		N/A
1982	Pontiac	Phoenix		N/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:

180164354746396

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