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  • Cars
  • Air & Fuel Delivery
      • Air Cleaners, Flame Arrestors & Scoops
        • Air Cleaner Bottoms
        • Air Cleaner Studs
        • Air Cleaner Tops
        • Air Cleaners
        • Air Filter Assembly Adapters
        • Air Filter Assembly Vents
        • Air Filter Assembly Wingnuts & Fasteners
        • Air Flow Enhancers
        • Carburetor Scoops
      • Air Filter Elements & Accessories
        • Air Filter Elements
      • Air Intakes & Boxes
        • Idle Air Controls
      • Carburetors & Accessories
        • Carburetor Accelerator Pump Covers
        • Carburetor Adapters
        • Carburetor Base Plates
        • Carburetor Dust Covers
        • Carburetor Fasteners
        • Carburetor Floats
        • Carburetor Fuel Bowls
        • Carburetor Linkage Kits
        • Carburetor Main Bodies
        • Carburetor Metering Block Gaskets
        • Carburetor Metering Blocks, Replacement
        • Carburetor Needle and Seats
        • Carburetor Spacer Burst Panels
        • Carburetor Spacers
        • Carburetors
        • Choke Cables
        • Choke Kits
        • Throttle Cable Brackets
        • Throttle Cables
        • Throttle Return Spring and Bracket Kits
        • Throttle Return Spring Brackets
      • Fuel Cells & Tanks
        • Fuel Cell Caps
        • Fuel Cell Filler Valves
        • Fuel Cell Tip Over Valves
        • Fuel Cells
        • Fuel Tanks
      • Fuel Filters
        • Fuel Filter Elements, Replacement
        • Fuel Filter Replacement Parts
        • Fuel Filters
      • Fuel Injection
        • Fuel Injection Sensor Kits
        • Fuel Injection Systems
        • Fuel Injector Spacers
        • Fuel Injectors
        • Fuel Rail Components
        • Fuel Rails
        • Throttle Bodies
        • Throttle Body Adapters, EFI Manifold
      • Fuel Pumps & Regulators
        • Fuel Pressure Regulators
        • Fuel Pump Block-Off Plates
        • Fuel Pump Mounting Plates
        • Fuel Pump Mounts
        • Fuel Pump Pushrods
        • Fuel Pumps, Electric External
        • Fuel Pumps, Electric In-Tank
        • Fuel Pumps, Mechanical
        • Fuel System Pump Kits
      • Intake Manifolds
        • EGR Adapters
        • Intake Manifold Adapters
        • Intake Manifold Spacers
        • Intake Manifolds, Carbureted
        • Intake Manifolds, Fuel Injected
        • Intake Manifolds, Fuel Injected Components
        • Intake Manifolds, Supercharger
        • Throttle Body Intake Elbows
      • Nitrous Oxide
        • Nitrous Oxide Bottle Brackets
        • Nitrous Oxide Plates
        • Nitrous Oxide Safety Blow-Off Discs
      • Superchargers & Turbochargers
        • Pressure Relief Valves
        • Supercharger Drive Belts
        • Supercharger Fasteners
        • Supercharger Idler Brackets
        • Supercharger Mounting Brackets
        • Supercharger Nose Drive Assemblies
        • Supercharger Pulley Spacers
        • Supercharger Pulleys
        • Supercharger Top Plates
        • Superchargers, Centrifugal Style Head Units
        • Superchargers, Roots Style Components
        • Superchargers, Roots Style Kits
        • Supercharger Restraints

      Air & Fuel Delivery

      Air & Fuel Delivery

  • Engines & Components
      • Accessory Brackets & Eliminators
        • Air Conditioner Brackets
        • Alternator Bracket Components
        • Alternator Brackets
        • Power Steering Brackets
      • Bearings & Bearing Spacers
        • Cam Bearings
        • Main Bearings
        • Rod Bearings
      • Belts & Pulleys
        • Accessory Belts
        • Accessory Drive Systems
        • Alternator Pulleys
        • Crankshaft Pulleys
        • Idler Pulleys
        • Power Steering Pulleys
        • Pulley Adapters
        • Pulley Fasteners
        • Pulley Kits
        • Pulley Nose Cones
        • Pulley Spacers
        • Water Pump Pulleys
      • Camshafts & Valvetrain
        • Camshaft and Lifter Kits
        • Camshaft Bolts
        • Camshaft Locking Plates
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        • Camshaft Thrust Plates
        • Camshafts
        • Cylinder Head Valvetrain Kits
        • Guideplates
        • Lash Caps
        • Lifters
        • Pushrods, Assembled
        • Rocker Arm Nuts
        • Rocker Arm Screws
        • Rocker Arm Shaft Shim Kits
        • Rocker Arm Stud Girdles
        • Rocker Arm Studs
        • Rocker Arms
        • Timing Belt Drive Replacement Parts
        • Timing Belt Drive Systems
        • Timing Chain and Gear Replacement Parts
        • Timing Chain and Gear Sets
        • Timing Cover Fasteners
        • Timing Covers
        • Timing Gear Drive Replacement Parts
        • Timing Gear Drive Sets
        • Timing Gears
        • Timing Pointers
        • Valve Locks
        • Valve Spring and Retainer Kits
        • Valve Spring Locators
        • Valve Spring Retainers
        • Valve Spring Shims
        • Valve Springs
        • Valves
      • Connecting Rods
        • Connecting Rod Bolts
        • Connecting Rods
      • Crankshafts
        • Crankshafts
      • Cylinder Heads
        • Cylinder Head Bushing Kits
        • Top End Kits
        • Cylinder Head Dowel Pins
        • Cylinder Head Fasteners
        • Cylinder Heads
        • Valve Guides
        • Valve Seats
      • Engine Assemblies
        • Crate Engines
      • Engine Blocks & Accessories
        • Engine Block Expansion Plugs
        • Engines, Bare Blocks
        • Main Cap Fasteners
        • Main Cap Girdles
        • Main Caps
        • Rear Main Seal Adapters
      • Engine Kits & Rotating Assemblies
        • Engine Rotating Kits
        • Short Block Engines
      • Harmonic Balancers
        • Harmonic Balancer Bolts
        • Harmonic Balancers
        • Timing Tape
      • Oiling Systems
        • Crankcase Evacuation Systems
        • Dipstick Handles
        • Engine Oil Dipsticks
        • Oil Filter Adapters
        • Oil Filter Covers
        • Oil Filter Mounts
        • Oil Filters
        • Oil Pan Fasteners
        • Oil Pans, Individual
        • Oil Pump Driveshafts
        • Oil Pump Pickups
        • Oil Pumps
        • Oil Restrictors
      • Pistons & Piston Rings
        • Piston and Ring Kits
        • Piston Oil Ring Spacers
        • Piston Rings
        • Pistons
      • Valve Covers & Dress-Up Kits
        • Engine Dress-Up Kit Combos
        • Valve Cover Baffles
        • Valve Cover Breathers
        • Valve Cover Fasteners
        • Valve Cover Grommets
        • Valve Cover Hold-Down Tabs
        • Valve Cover Oil Fill Caps
        • Valve Covers

      Engines & Components

      Engines & Components

  • Driveline and Systems
      • Differential & Rear-End Components
        • Axle Assemblies
        • Axle Drive Flanges
        • Axle Housing End Fasteners
        • Axle Housing Ends
        • Axle Housing Tubes
        • Axle Retainer Plates
        • Axle Shafts, Custom Built
        • Axle Shafts, Direct Fit
        • Axle Upgrade Combos
        • Differential Carrier Bearing Adjusting Nuts
        • Differential Carrier Bearings
        • Differential Carriers
        • Differential Covers
        • Differential Main Cap Fasteners
        • Differential Pinion Bearing Spacers and Sleeves
        • Differential Pinion Nuts
        • Differential Shims
        • Differential Spanners and Side Adjuster Tools
        • Differential Third Member Fasteners
        • Floating Axle Kits
        • Pinion Bearings and Races
        • Pinion Support Fasteners
        • Pinion Supports
        • Rear Axle Housings
        • Ring and Pinion Gears
        • Spools and Mini Spools
        • Third Member Case Only
        • Third Member Complete Assembly
      • Driveshafts, Drive Chains, Couplers & Yokes
        • U-Joint Fasteners
        • U-Joints
        • Yoke Adapters
        • Yokes
      • Shifters
        • Automatic Transmission Brackets and Levers
        • Automatic Transmission Gate Plates
        • Shifter Cables, Automatic Transmission
        • Shifter Solenoids, Air
        • Shifter Sticks, Manual Transmission
        • Shifters, Automatic Transmission
        • Shifters, Manual Transmission
      • Transmission Components
        • Automatic Transmission Bands
        • Automatic Transmission Cases
        • Automatic Transmission Center Supports
        • Automatic Transmission Clutch Hubs
        • Automatic Transmission Clutch Steels
        • Automatic Transmission Drums
        • Automatic Transmission Filter Extensions
        • Automatic Transmission Filters, Direct Fit
        • Automatic Transmission Front Pump Drives
        • Automatic Transmission Gears
        • Automatic Transmission Input Shafts
        • Automatic Transmission Kickdown Cables
        • Automatic Transmission Output Shafts
        • Automatic Transmission Packages
        • Automatic Transmission Pans
        • Automatic Transmission Gaskets
        • Automatic Transmission Rebuild Components
        • Automatic Transmission Servo Kits
        • Automatic Transmission Shift Kits
        • Automatic Transmission Sprags
        • Automatic Transmission Tailhousings
        • Automatic Transmission Trans-Brake Solenoids
        • Automatic Transmission Valve Bodies
        • Automatic Transmissions
        • Bellhousing Adapters
        • Bellhousings
        • Clutch Fork Pivot Balls
        • Clutch Forks
        • Counter Balance Plates
        • Engine To Bellhousing Separator Plates
        • Flexplate Fasteners
        • Flexplates
        • Flywheel And Flexplate Dust Covers
        • Flywheel and Flexplate Shims and Spacers
        • Flywheel Counterweights
        • Flywheel Fasteners
        • Flywheel Locating Dowels
        • Flywheels
        • Manual Transmission Bearings
        • Manual Transmission Replacement Components
        • Manual Transmission Synchros
        • Manual Transmission Throwout Bearing Retainers
        • Manual Transmissions
        • Oil Pan Drain Plugs
        • Others
        • Pilot Bearings and Bushings
        • Throwout Bearings
        • Torque Converter Shims
        • Torque Converters
        • Transmission Fluid Dipsticks
        • Valve Body Replacement Components
        • Manual Transmission Shifter Forks
      • Wheel, Axle Bearings and Seals
        • Axle Bearings
        • Axle Seals
        • Ring and Pinion Gear Installation Kits

      Driveline and Systems

      Driveline and Systems

  • Ignition & Electrical
      • Charging Systems
        • Alternator Fans
        • Alternator One Wire Conversion Kits
        • Alternators and Generators
        • Battery Boxes
        • Battery Trays
        • Voltage Regulator and Rectifiers
      • Computers, Sensors & Programmers
        • Coolant Temperature Sensors
        • MAP Sensors
        • Oxygen Sensor Mounting Clamps
        • Oxygen Sensors
        • Throttle Position Sensors
      • Electrical Wiring
        • Distributor Wiring Harnesses
        • Wiring Connectors and Pigtails
        • Wiring Harnesses
      • Ignition Components
        • Crank Trigger Replacement Pickups
        • Distributor Advance Kits
        • Distributor Cap and Rotor Kits
        • Distributor Caps
        • Distributor Gears
        • Distributor Hold-Down Clamps
        • Distributor Replacement Parts
        • Distributor Rotors
        • Distributors
        • Electronic Distributor Conversion Kits
        • HEI Distributor Upgrade Kits
        • Ignition Box Mounts
        • Ignition Boxes
        • Ignition Coil Brackets
        • Ignition Coil Covers
        • Ignition Coils
        • Ignition Modules
        • Ignition RPM Module Kits
        • Ignition System Combo Kits
        • Multi Step Module Selectors
        • Rev Limiters
        • Tachometer Adapters
        • Timing Controllers, Electronic
        • Voltage Boosters
      • Spark Plug Wires and Accessories
        • Ignition Wire Looms and Separators
        • Spark Plug Wire Sets
      • Spark Plugs & Glow Plugs
        • Spark Plugs
      • Starters
        • Starter Bolts
        • Starter Drive End Blocks
        • Starters

      Ignition & Electrical

      Ignition & Electrical

  • Tools & Accessories
      • Apparel & Promotional
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        • Beverages & Extras
        • Keys & Keychains
        • Stickers
        • eGift Cards
        • Backpacks & Bags
        • Swag Packs
      • Brake Systems
        • Disc Brakes
        • Drum Brakes
        • Master Cylinders & Boosters
      • Chassis, Steering & Suspension
        • Bushings & Mounts
        • Chassis Components
        • Steering Components
        • Suspension Components
      • Cooling & Heating
        • Air Conditioning
        • Fans
        • Oil and Fluid Coolers
        • Overflow Tanks & Catch Cans
        • Radiators and Accessories
        • Thermostats, Housings & Fillers
        • Water Pumps
      • Exterior & Accessories
        • Grilles & Grille Shells
        • Hoods, Tops, Body Panels, Parts & Sections
        • License Plates
        • Lights & Lenses
        • Mirrors, Side View & Towing
        • Roof Racks, Carriers, & Storage Racks
        • Scoops & Louvers
        • Truck Bed & Truck Accessories
      • Gaskets & Seals
        • Differential Gaskets & Seals
        • Engine Gaskets & Seals
        • Exhaust Gaskets & Seals
        • Transmission Gaskets & Seals
      • Gauges & Accessories
        • Gauges, Individual
        • Sending Units
      • Tools & Shop Equipment
        • Electrical & Electrical Testing Tools
        • Emergency Roadside
        • Emergency Roadside Repair Tools
        • Engine-Related
        • Hand & Other Tools
        • Shop Equipment
        • Storage, Organizers
        • Tire Pressure
      • Trailer, Towing & Winches
        • Tie-Down Straps & Tow Straps, Ropes
        • Trailer Accessories
        • Winches
        • Wiring & Lights
      • Wheels & Tires
        • Lug Nuts, Studs & Washers
        • Tire & Wheel Accessories
      • Miscellaneous Parts & Accessories
        • Miscellaneous Kits
        • Other Parts
      • Fittings & Hoses
        • Fittings & Plugs
        • Hose & Line & Tubing
        • Valves, Check & Shutoff
      • Fasteners & Hardware
        • Bolts
        • Nuts
        • Washers
      • Exhaust
        • Exhaust Flame Thrower Kits
        • Headers
      • Safety Equipment
        • Driveshaft Loops
      • Interior & Accessories
        • Door Accessories
        • Pedals & Pedal Pads
        • Steering Columns and Components
        • Steering Wheels

      Tools & Accessories

      Tools & Accessories

  • Assembly
      • Ignition System Combo Kits
        • Speedmaster El Rayo ignition system are designed for the enthusiast that is serious about performance but needs the small cap size due to space considerations when installed.
      • Engine Rotating Kits
        • Churn out all the asphalt-chewing, road-grating horsepower you want with our massive selection of rotating assemblies! SpeedmasterTM kits bring together everything you need.
      • Top End Kits
        • Speedmaster has taken the guesswork out of top-end component selection by actually placing the top end components together in complete kits. They include almost everything you need to make serious horsepower.
      • Cylinder Heads
        • Performance cylinder heads enhance the airflow into your engine, giving you improved power and torque. Bolt on a set of Speedmaster's fully assembled cylinder heads for instant power gains.
      • Fuel Injection Systems
        • Speedmaster™ line of EFI systems is all you need when deciding to upgrade your engine to modern electronic fuel injection. Our EFI systems provide excellent throttle response throughout the RPM range along with smooth engine operation.
      • Superchargers, Roots Style Kits
        • Speedmaster’s 6-71 Street Supercharger kits can give you 45-55 percent more streetable power. They feature double-pinned rotors (timed and clearanced after assembly), heavy duty front and rear bearing plates, and an intake manifold.
      • Crate Engines
        • Speedmaster crate engines have become a huge success all over the world. We deliver reliable horsepower, torque and drivability. We use only quality name brand parts that we trust giving our customers a superior product for their money.
      • Third Member Complete Assembly
        • Assembly has been carried out at the Speedmaster’s TDS Department by the Head differential technician. Quality is assured with 40 years experience in the Differential Industry and full involvement in all forms of motorsport from V8 SUPERCAR To Group 1 Drag Racing.

      Assembly

      Assembly

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  • Rear Main Seal Adapters

Rear Main Seal Adapters

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4 Products

Condition

  • Brand New

Brand

  • Speedmaster
  • 2
  • 6

Application

  • Chevrolet
  • Chrysler

Application Family

  • Chevy Big Block
  • Chevy Small Block
  • Mopar Big Block

Price

$106.40$59.60

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Speedmaster
Chrysler 383 440 Billet Aluminum Rear Main Seal Retainer w/ Hardware
US $65.70
No Reviews yet

Out of Stock

Speedmaster
Chevy SBC 350 Rear Main Seal Adapter Late 1pc to 2pc Aluminum
US $69.40
8 Reviews
Speedmaster
Chevy SBC 350 Rear Main Seal Replacement Late 1pc. Aluminum
US $59.60
1 Review
Speedmaster
Chevy BBC 454 Rear Seal Adpater Gen V &VI Block 1PC to 2PC Rear Main Seal
US $106.40
1 Review
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1101 W. Rialto Ave. Rialto, CA 92376, USA
+1 (310) 361-0020

23 Mount Erin Rd, Blair Athol NSW 2560, Australia
+61 2 9607 2299

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