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1991 GMC C3500HD
1
0
Price Match Guarantee
60-Day Returns
Lifetime Replacement
Price Match Guarantee
60-Day Returns
Lifetime Replacement
Guaranteed to Fit1991 GMC C3500HD Change Vehicle

Dorman®
1991 GMC C3500HD - Brake Master Cylinder, with Reservoir, Power Brake System, with Rear Disc Brake, Bore: 34 Mm

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$82.49
$182.75Save: $100.26(55%)
Manufacturer #M39309
Guaranteed to Fit1991 GMC C3500HD Change Vehicle
Qty:
1

Your Vehicle Fit Details

Vehicle Name
Submodel
Engine
Fitment Information
1991 GMC C3500HD
Base
All Engines
Power Brake System, With Rear Disc Brake, Bore: 34 mm

Highlights

Part:
Brake Master Cylinder
Brand:
Dorman
Notes:
1.34 in. bore diameter; 1/2-20 Forward Outlet Size Forward Outlet Size; 9/16-18 Rearward Outlet Size
Series:
First Stop Series
Condition:
New
Reservoir Included:
With Reservoir
Replaces OE Number:
M900359, MC103239, M1641, M1668, NM1641, NM1668, F103238, F103239, MC103238, 174-833, 174-834, 18M161, 11641, 11668, 2539309, MC39309, MC39622, M-86006, 130.66006, 131.66006, 14009145, 14009146, 13-1668, 10-1641, 10-1668, 103238, 783-44006, 83-44006
Includes:
With Cap
Quantity Sold:
Sold individually
Warranty:
Lifetime Dorman limited warranty
Prop 65 Warning:

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Interchange Part Number:
RC27090015, M900359, MC103239, M1641, M1668, NM1641, NM1668, F103238, F103239, MC103238, 174-833, 174-834, 18M161, 11641, 11668, 2539309, MC39309, MC39622, M-86006, 130.66006, 131.66006, 14009145, 14009146, 13-1668, 10-1641, 10-1668, 103238, 783-44006, 83-44006
Material:
Cast Iron
Outlet Quantity:
2 Outlets
Recommended Use:
OE Replacement
Fitnotes:
Power Brake System, With Rear Disc Brake, Bore: 34 mm

Vehicle Fitment Information

Vehicle Name
Submodel
Engine
Fitment Information
1976-1978 GMC G35
All Submodels
All Engines
Bore: 34 mm; 8,100 To 10,000 Lb. Gvw
1976-1984 Chevrolet G30
Beauville
All Engines
Power Brake System, Bore: 34 mm; 8,100 To 10,000 Lb. Gvw
1976-1984 Chevrolet G30
Chevy Van
All Engines
Power Brake System, Bore: 34 mm; 8,100 To 10,000 Lb. Gvw
1976-1984 Chevrolet G30
Hi-Cube
All Engines
Power Brake System, Bore: 34 mm; 8,100 To 10,000 Lb. Gvw
1976-1984 Chevrolet G30
Sportvan
All Engines
Power Brake System, Bore: 34 mm; 8,100 To 10,000 Lb. Gvw
Page 1 of 14 | Showing 1 - 5 of 70 results

Product Information

DORMAN FIRST STOP OE REPLACEMENT BRAKE MASTER CYLINDERS

Replace your leaking master cylinder with Dorman’s First Stop OE replacement brake master cylinders and stomp on the brakes with renewed confidence. Since 1918, Dorman Products has supplied the automotive aftermarket with high-quality replacement parts, hardware and fasteners.

  • Housing manufactured with premium cast iron or aluminum
  • Rigorously engineered to meet SAE standards
  • EPDM-based rubber components holds up against glycol-based brake fluid
  • 100% new
Need help?Call our product expert1-866-529-0412
Chat with us
Mondays - Sundays7am - 11pm ET | 4am - 8pm PT
Warranty Policy
Right parts, guaranteed. If you find any defects, let us know within 60 days and we’ll take care of it. Check out our Warranty Policy for more details.
Shipping Policy
We ship fast so you can get on the road that much faster. Check out our Shipping Policy for more details.
Easy Return Policy
We’re only happy if you’re happy. If you’re not entirely satisfied with your order, you may be entitled to a refund. Check out our Return Policy for more details.

Product Q&A

3
Gasket?Margaret P.Oct 11, 2022
Best Answer:Hi Margaret, thank you for reaching out. I don't understand your question. Kindly call our parts team at 1-866-529-0412 and provide the complete vehicle information. We'll be more than glad to help you answer your question. Have a nice day.
Aldrin P.STAFFOct 11, 2022
0
1979 chevy van master cylinder (Dorman M39309) I need the gasket between the cylinder and the reservoir. Do you have this item?Tom P.Mar 08, 2021
Best Answer:Hi, You missed mentioning what type of Chevy van the vehicle is for me to check for the availability of the gasket. You can do a manual check for the availability and fitment - On the Homepage, please enter (complete) your vehicle’s year, make, model, sub-model, and engine size. Type the part's name in the search box. Once your application is selected, you’ll see a “Guaranteed to Fit” badge if the part will fit, and we recommend that you also double-check Your Vehicle Fit Details as well as the Vehicle Fitment Information table on the product page.
Grace G.STAFFMar 08, 2021

Customer Reviews

First Stop Series Brake Master Cylinder With Reservoir
It arrived on time , its good quality and I am happy with it.
I like my purchase and the procuct is good quality
Jeffrey W.
VERIFIED PURCHASER
Purchased on Apr 10, 2024