HomeRaybestos MC39328 Brake Master Cylinder
Part #: MC39328

Raybestos MC39328 Brake Master Cylinder

Element3; New, N/A
89 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Element3; New, N/A
Fitment: Buick, Chevrolet, Oldsmobile, Cadillac, Pontiac, and Checker, LeSabre, Caprice, Custom Cruiser, Electra, Brougham, Safari, Fleetwood, Parisienne, Commercial Chassis, Impala, Delta 88, DeVille, 98, Estate Wagon, Marathon, Camaro, Bonneville, Catalina, Firebird, and Laurentian
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Reliable Brake Master Cylinder for Classic GM Vehicles

The Raybestos Element3; New Brake Master Cylinder MC39328 is engineered to restore precise brake hydraulics in select Buick, Cadillac, Chevrolet, Oldsmobile, and Pontiac models. Designed with durable iron construction and exact fitment specifications, this master cylinder ensures consistent braking performance for vehicles like the Chevrolet Camaro and Pontiac Firebird.

  • Constructed from robust iron material for long-lasting durability
  • Features a 1.125-inch bore size for optimal hydraulic pressure
  • Includes two mounting holes with a 0.433-inch diameter for secure installation
  • Equipped with two ports: primary port thread 1/2"-20 and secondary port thread 9/16"-18
  • Compatible with multiple GM models including Buick LeSabre, Cadillac DeVille, and Chevrolet Caprice

About the Raybestos Element3; New Product Line

The Element3; New line from Raybestos focuses on delivering reliable brake hydraulics components that meet or exceed OEM specifications. This brake master cylinder MC39328 is part of that line, offering precise engineering and material quality tailored for classic GM vehicles. The Element3; New series emphasizes durability and fitment accuracy to maintain vehicle safety and performance.

Detailed Product Description and Specifications

This brake master cylinder is crafted from iron, providing strength and resistance to wear under demanding braking conditions. The 1.125-inch bore size is designed to deliver consistent hydraulic pressure, essential for effective brake system operation. With two mounting holes sized at 0.433 inches in diameter, installation is straightforward and secure. The unit features two ports with specific thread sizes—primary port thread 1/2"-20 and secondary port thread 9/16"-18—ensuring compatibility with the brake lines of various GM models. The part number MC39328 corresponds to this exact configuration, making it a precise replacement for vehicles such as the Pontiac Bonneville and Oldsmobile Delta 88.

Common Applications and Problem Resolution

  • Restores brake hydraulic pressure in Buick, Cadillac, Chevrolet, Oldsmobile, and Pontiac vehicles
  • Addresses issues with brake pedal sponginess or sinking
  • Replaces leaking or damaged master cylinders causing brake fluid loss
  • Improves brake response and pedal feel in classic GM models
  • Solves inconsistent braking performance due to worn internal components

Installation Notes and Tips

  • Ensure compatibility with your vehicle’s make and model before installation
  • Bleed the brake system thoroughly after installation to remove air
  • Use proper tools to avoid damaging mounting holes or port threads
  • Inspect brake lines and fittings for wear or damage during replacement
  • Follow manufacturer torque specifications for mounting bolts

Quality Assurance and Warranty Information

Raybestos manufactures the MC39328 brake master cylinder to meet stringent quality standards, ensuring reliable performance and durability. The Element3; New line undergoes rigorous testing to comply with OEM requirements. Warranty coverage details should be confirmed with the distributor or retailer, as they may vary by region.

BrandRaybestos
Part NumberMC39328
PositionElement3; New, N/A
Bore Size1.125
Master Cylinder MaterialIron
Mounting Hole Diameter0.433
Mounting Hole Quantity2
Number of Ports2
Primary Port Thread A1/2"-20
Secondary Port Thread A9/16"-18

This part fits 89 vehicles. Search below:

YearMakeModelSubmodelBody Type# DoorsDrive TypeLitersCylindersFuel TypePositionNotes
1990BuickLeSabreWagon4 DoorN/AElement3; New
1990ChevroletCapriceN/AElement3; New
1990OldsmobileCustom CruiserN/AElement3; New
1989BuickLeSabreWagon4 DoorN/AElement3; New
1989CadillacBroughamN/AElement3; New
1989ChevroletCapriceN/AElement3; New
1989OldsmobileCustom CruiserN/AElement3; New
1989PontiacSafariN/AElement3; New
1988BuickLeSabreWagon4 DoorN/AElement3; New
1988CadillacBroughamN/AElement3; New
1988ChevroletCapriceN/AElement3; New
1988OldsmobileCustom CruiserN/AElement3; New
1988PontiacSafariN/AElement3; New
1987CadillacBroughamN/AElement3; New
1987ChevroletCapriceN/AElement3; New
1987OldsmobileCustom CruiserN/AElement3; New
1987PontiacSafariN/AElement3; New
1986CadillacFleetwoodBroughamRWDN/AElement3; New
1986ChevroletCapriceSedan4 DoorN/AAluminum Step Bore Cylinder With Plastic Reservoir; Element3; New
1986ChevroletCapriceCoupe2 DoorN/AAluminum Step Bore Cylinder With Plastic Reservoir; Element3; New
1986OldsmobileCustom CruiserN/AElement3; New
1986PontiacParisienneSedan4 DoorN/AElement3; New
1985BuickLeSabreGASN/AElement3; New
1985CadillacCommercial ChassisGASN/AElement3; New
1985CadillacFleetwoodRWDGASN/AElement3; New
1985ChevroletCapriceN/AAluminum Step Bore Cylinder With Plastic Reservoir; Element3; New
1985ChevroletImpalaGASN/AElement3; New
1985OldsmobileCustom CruiserGASN/APowermaster; Element3; New
1985OldsmobileDelta 88GASN/AElement3; New
1985PontiacParisienneSedan4 DoorGASN/AElement3; New
1984BuickLeSabreGASN/AElement3; New
1984CadillacCommercial ChassisGASN/AElement3; New
1984CadillacDeVille4 DoorGASN/AElement3; New
1984CadillacDeVille2 DoorGASN/AElement3; New
1984CadillacFleetwoodN/AAluminum Step Bore Cylinder With Plastic Reservoir; Element3; New
1984ChevroletCapriceN/AAluminum Step Bore Cylinder With Plastic Reservoir; Element3; New
1984ChevroletImpalaGASN/AElement3; New
1984Oldsmobile98GASN/AElement3; New
1984OldsmobileCustom CruiserGASN/AElement3; New
1984OldsmobileDelta 88GASN/AElement3; New
1984PontiacParisienneSedan4 DoorGASN/AElement3; New
1983BuickLeSabreGASN/AElement3; New
1983CadillacCommercial ChassisGASN/AElement3; New
1983CadillacDeVille4 DoorGASN/AElement3; New
1983CadillacDeVille2 DoorGASN/AElement3; New
1983CadillacFleetwoodN/AAluminum Step Bore Cylinder With Plastic Reservoir; Element3; New
1983ChevroletCapriceN/AAluminum Step Bore Cylinder With Plastic Reservoir; Element3; New
1983ChevroletImpalaGASN/AElement3; New
1983Oldsmobile98GASN/AElement3; New
1983OldsmobileCustom CruiserGASN/AElement3; New
1983OldsmobileDelta 88BaseGASN/AElement3; New
1983OldsmobileDelta 88RoyaleGASN/AElement3; New
1983OldsmobileDelta 88Royale BroughamGASN/AElement3; New
1983PontiacParisienneGASN/AElement3; New
1982BuickLeSabreGASN/AElement3; New
1982CadillacCommercial ChassisGASN/AElement3; New
1982CadillacDeVille4 DoorGASN/AElement3; New
1982CadillacDeVille2 DoorGASN/AElement3; New
1982CadillacFleetwoodN/AAluminum Step Bore Cylinder With Plastic Reservoir; Element3; New
1982ChevroletCapriceN/AAluminum Step Bore Cylinder With Plastic Reservoir; Element3; New
1982ChevroletImpalaGASN/AElement3; New
1982Oldsmobile98GASN/AElement3; New
1982OldsmobileCustom CruiserGASN/AElement3; New
1982OldsmobileDelta 88BaseGASN/AElement3; New
1982OldsmobileDelta 88RoyaleGASN/AElement3; New
1982OldsmobileDelta 88Royale BroughamGASN/AElement3; New
1981BuickLeSabreGASN/AElement3; New
1981CadillacCommercial ChassisGASN/A11in Rear Drum; Element3; New
1981CadillacCommercial ChassisGASN/Awith 12in Diameter Rear Drum; Element3; New
1981CadillacDeVille4 DoorGASN/AElement3; New
1981CadillacDeVille2 DoorGASN/AElement3; New
1981CadillacFleetwoodN/AAluminum Step Bore Cylinder With Plastic Reservoir; Element3; New
1981ChevroletCamaroN/AElement3; New
1981ChevroletCapriceN/AAluminum Step Bore Cylinder With Plastic Reservoir; Element3; New
1981ChevroletImpalaGASN/AElement3; New
1981Oldsmobile98GASN/AElement3; New
1981OldsmobileCustom CruiserGASN/AElement3; New
1981OldsmobileDelta 88BaseGASN/AElement3; New
1981OldsmobileDelta 88HolidayGASN/AElement3; New
1981OldsmobileDelta 88RoyaleGASN/AElement3; New
1981OldsmobileDelta 88Royale BroughamGASN/AElement3; New
1981PontiacBonnevilleGASN/AElement3; New
1981PontiacCatalinaGASN/AElement3; New
1981PontiacFirebird5.0LV8N/AElement3; New
1981PontiacFirebird3.8LV6N/AElement3; New
1981PontiacFirebird4.3LV8N/AElement3; New
1981PontiacFirebird4.4LV8N/AElement3; New
1981PontiacLaurentianN/Afits models equipped with Hydro-Boost; Element3; New
1981PontiacParisienneGASN/AElement3; New

* 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:

10-187010-2011104460118701201113-1870130.62006131.6200615861596180080491800805818010313180134262718705039328510246513932866-93-200783-360067873932883-36006CM1258CM1465E104460F104458F104460F104461M104458M1870M2421MC104460MC526MCA104458NM1870R104460SMC104460

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