MPA Electrical 3631S Starter Motor
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MPA Electrical
 Remanufactured

MPA Electrical 3631S Starter Motor

Brand MPA Electrical 3631S
Design Direct Drive
Manufacturer Delco
Rotation Clockwise
Teeth 9
Volts 12 Volts
kW Rating 1.5 kW
Product line Remanufactured
Fits Oldsmobile, Cadillac, Buick, Checker, Chevrolet, GMC, Pontiac, and Jeep · 125 vehicles

Direct-drive design. Delivers dependable cranking with fewer moving parts.

1.5 kW output. Provides strong starting power for consistent engine turnover.

Remanufactured starter. A rebuilt electrical replacement from MPA Electrical.

Cross-references Anchor 3549, Anchor 3567 and Anchor 3570 for the same application. See all 48.

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Free returns within 60 days if it doesn't fit when fitment is verified.
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Remanufactured 12V Starter for GM Applications

MPA Electrical 3631S is a remanufactured starter built for 12-volt systems with a direct drive design, 1.5 kW rating, clockwise rotation, and a 9-tooth drive. It is a Delco-style starter application for a wide range of classic Cadillac, Buick, Chevrolet, Pontiac, and Jeep vehicles.

Use this starter when you need a remanufactured replacement for GM and Jeep applications such as Chevrolet Camaro, Caprice, El Camino, Impala, Malibu, Monte Carlo, and Corvette, along with Cadillac DeVille and Fleetwood models. Part number 3631S is also a fitment match for several older full-size and performance platforms.

Key Features

  • Remanufactured starter for electrical, charging, and starting systems
  • Direct drive design for Delco-style applications
  • 1.5 kW output with 12-volt operation
  • Clockwise rotation
  • 9-tooth drive gear
  • Fits a broad range of classic GM and Jeep vehicles

Fitment Details

  • Fits 1985-1987 Oldsmobile Cutlass, N/A
  • Fits 1973-1983 Cadillac Commercial Chassis, N/A
  • Fits 1970-1981 Buick LeSabre, N/A
  • Fits 1965-1981 Cadillac DeVille, N/A
  • Fits 1965-1981 Cadillac Fleetwood, N/A
  • Fits 1981 Chevrolet Camaro, N/A
  • Fits 1981 Chevrolet Caprice, N/A
  • Fits 1981 Chevrolet El Camino, N/A
  • Fits 1981 Chevrolet Impala, N/A
  • Fits 1981 Chevrolet Malibu, N/A
  • Fits 1981 Chevrolet Monte Carlo, N/A
  • Fits 1981 Pontiac LeMans, N/A
  • Fits 1978-1980 Pontiac Bonneville, N/A
  • Fits 1978-1980 Pontiac Catalina, N/A
  • Fits 1980 Pontiac Laurentian, N/A
  • Fits 1980 Pontiac Parisienne, N/A
  • Fits 1979 Chevrolet Monza, N/A
  • Fits 1967-1976 Buick Riviera, N/A
  • Fits 1973-1974 Buick Century, N/A
  • Fits 1973-1974 Buick Regal, N/A
  • Fits 1970-1971 Buick Skylark, N/A
  • Fits 1965-1968 Buick Skylark, N/A
  • Fits 1970-1971 Jeep Wagoneer, N/A
  • Fits 1965-1968 Jeep Wagoneer, N/A
  • Fits 1969 Chevrolet Bel Air, N/A
  • Fits 1966-1969 Chevrolet Corvette, N/A
  • Fits 1962-1969 Chevrolet Corvette, N/A
  • Fits 1969 Chevrolet Nova, N/A
  • Fits 1965-1966 Cadillac Eldorado, N/A

What This Starter Helps Address

  • Slow or no-crank starting conditions
  • Starter failure from worn internal components
  • Intermittent engagement on Delco-style starter systems
  • Starting issues on classic Chevrolet Corvette and Camaro applications
  • Replacement needs for Cadillac DeVille, Fleetwood, and Buick Riviera platforms

Installation Notes

Confirm the vehicle uses a 12-volt, clockwise-rotation, direct drive starter with a 9-tooth drive before installation. Verify mounting style and electrical connections against the original unit, especially on older Chevrolet Corvette, Cadillac, and Buick applications where configurations can vary by year and drivetrain.

This part cross-references Anchor 3549 and 3567 for the same application. Part number 3631S should be matched to the original starter by fitment, rotation, tooth count, and electrical specification.

Quality Assurance

MPA Electrical remanufactures this starter for replacement use in Delco-style starting systems. The remanufactured construction supports consistent fitment across the listed Cadillac, Buick, Chevrolet, Pontiac, and Jeep applications.

This part fits 125 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelTransmissionLitersCylindersFuel TypePositionNotes
1987OldsmobileCutlass—5.0LV8—N/ARemanufactured
1986OldsmobileCutlass—5.0LV8—N/ARemanufactured
1985OldsmobileCutlass—5.0LV8—N/ARemanufactured
1983CadillacCommercial Chassis—6.0LV8—N/ARemanufactured
1982CadillacCommercial Chassis—6.0LV8—N/ARemanufactured
1981BuickLeSabre—4.1LV6—N/ARemanufactured
1981CadillacCommercial Chassis—6.0LV8—N/ARemanufactured
1981CadillacDeVille—6.0LV8—N/ARemanufactured
1981CadillacDeVille—4.1LV6—N/ARemanufactured
1981CadillacFleetwood—6.0LV8—N/ARemanufactured
1981CadillacFleetwood—4.1LV6—N/ARemanufactured
1981ChevroletCamaro—3.8LV6—N/ARemanufactured
1981ChevroletCaprice—3.8LV6—N/ARemanufactured
1981ChevroletEl Camino—3.8LV6—N/ARemanufactured
1981ChevroletImpala—3.8LV6—N/ARemanufactured
1981ChevroletMalibu—3.8LV6—N/ARemanufactured
1981ChevroletMonte Carlo—3.8LV6—N/ARemanufactured
1981PontiacLeMans—3.8LV6—N/ARemanufactured
1980BuickLeSabre—5.7LV8GASN/ARemanufactured
1980BuickLeSabre—4.1LV6—N/ARemanufactured
1980CadillacCommercial Chassis—6.0LV8—N/ARemanufactured
1980CadillacDeVille—6.0LV8—N/ARemanufactured
1980CadillacDeVille—4.1LV6—N/ARemanufactured
1980CadillacFleetwood—6.0LV8—N/ARemanufactured
1980CadillacFleetwood—4.1LV6—N/ARemanufactured
1980PontiacBonneville—5.7LV8—N/ARemanufactured
1980PontiacCatalina—5.7LV8—N/ARemanufactured
1980PontiacLaurentian—5.7LV8GASN/ARemanufactured
1980PontiacParisienne—5.7LV8GASN/ARemanufactured
1979BuickLeSabre—5.7LV8—N/ARemanufactured
1979CadillacCommercial Chassis—7.0LV8—N/ARemanufactured
1979CadillacDeVille—7.0LV8—N/ARemanufactured
1979CadillacFleetwood—7.0LV8—N/ARemanufactured
1979ChevroletMonzaAutomatic5.0LV8—N/ARemanufactured
1979PontiacBonneville—5.7LV8—N/ARemanufactured
1979PontiacCatalina—5.7LV8—N/ARemanufactured
1978BuickLeSabre—5.7LV8—N/ARemanufactured
1978CadillacCommercial Chassis—7.0LV8—N/ARemanufactured
1978CadillacDeVille—7.0LV8—N/ARemanufactured
1978CadillacFleetwood—7.0LV8—N/ARemanufactured
1978PontiacBonneville—5.7LV8—N/ARemanufactured
1978PontiacCatalina—5.7LV8—N/ARemanufactured
1977BuickLeSabre—5.7LV8—N/ARemanufactured
1977CadillacCommercial Chassis—7.0LV8—N/ARemanufactured
1977CadillacDeVille—7.0LV8—N/ARemanufactured
1977CadillacFleetwood—7.0LV8—N/ARemanufactured
1976BuickLeSabre—7.5LV8—N/ARemanufactured
1976BuickRiviera—7.5LV8—N/ARemanufactured
1976CadillacCommercial Chassis—8.2LV8—N/ARemanufactured
1976CadillacDeVille—8.2LV8—N/ARemanufactured
1976CadillacFleetwood—8.2LV8—N/ARemanufactured
1975BuickLeSabre—7.5LV8—N/ARemanufactured
1975BuickRiviera—7.5LV8—N/ARemanufactured
1975CadillacCommercial Chassis—8.2LV8—N/ARemanufactured
1975CadillacDeVille—8.2LV8—N/ARemanufactured
1975CadillacFleetwood—8.2LV8—N/ARemanufactured
1974BuickCentury—7.5LV8—N/ARemanufactured
1974BuickLeSabre—7.5LV8—N/ARemanufactured
1974BuickRegal—7.5LV8—N/ARemanufactured
1974BuickRiviera—7.5LV8—N/ARemanufactured
1974CadillacCommercial Chassis—7.7LV8—N/ARemanufactured
1974CadillacDeVille—7.7LV8—N/ARemanufactured
1974CadillacFleetwood—7.7LV8—N/ARemanufactured
1973BuickCentury—7.5LV8—N/ARemanufactured
1973BuickLeSabre—7.5LV8—N/ARemanufactured
1973BuickRegal—7.5LV8—N/ARemanufactured
1973BuickRiviera—7.5LV8—N/ARemanufactured
1973CadillacCommercial Chassis—7.7LV8—N/ARemanufactured
1973CadillacDeVille—7.7LV8—N/ARemanufactured
1973CadillacFleetwood—7.7LV8—N/ARemanufactured
1972BuickLeSabre—7.5LV8—N/ARemanufactured
1972BuickRiviera—7.5LV8—N/ARemanufactured
1972CadillacDeVille—7.7LV8—N/ARemanufactured
1972CadillacFleetwood—7.7LV8—N/ARemanufactured
1971BuickLeSabre—7.5LV8—N/ARemanufactured
1971BuickRiviera—7.5LV8—N/ARemanufactured
1971BuickSkylark—7.5LV8—N/ARemanufactured
1971CadillacDeVille—7.7LV8—N/ARemanufactured
1971CadillacFleetwood—7.7LV8—N/ARemanufactured
1971JeepWagoneer—5.7LV8—N/ARemanufactured
1970BuickLeSabre—7.5LV8—N/ARemanufactured
1970BuickRiviera—7.5LV8—N/ARemanufactured
1970BuickSkylark—7.5LV8—N/ARemanufactured
1970CadillacDeVille—7.7LV8—N/ARemanufactured
1970CadillacFleetwood—7.7LV8—N/ARemanufactured
1970JeepWagoneer—5.7LV8—N/ARemanufactured
1969BuickRiviera—7.0LV8—N/ARemanufactured
1969CadillacDeVille—7.7LV8—N/ARemanufactured
1969CadillacFleetwood—7.7LV8—N/ARemanufactured
1969ChevroletBel Air—5.7LV8—N/AOptional, w/ Hydramatic trans.; Remanufactured
1969ChevroletCorvette—7.0LV8—N/AStandard, w/ 2 bolt Starter; Remanufactured
1969ChevroletCorvetteManual5.7LV8—N/ARemanufactured
1969ChevroletNova—5.7LV8—N/ARemanufactured
1968BuickRiviera—7.0LV8—N/ARemanufactured
1968BuickSkylark—6.6LV8—N/ARemanufactured
1968CadillacDeVille—7.7LV8—N/ARemanufactured
1968CadillacFleetwood—7.7LV8—N/ARemanufactured
1968ChevroletCorvette—7.0LV8—N/AStandard, w/ 2 bolt Starter; Remanufactured
1968ChevroletCorvetteManual5.3LV8—N/ARemanufactured
1968ChevroletCorvetteManual5.4LV8—N/ARemanufactured
1968JeepWagoneer—5.3LV8—N/ARemanufactured
1967BuickRiviera—7.0LV8—N/ARemanufactured
1967BuickSkylark—6.6LV8—N/ARemanufactured
1967CadillacDeVille—7.0LV8—N/ARemanufactured
1967CadillacFleetwood—7.0LV8—N/ARemanufactured
1967ChevroletCorvette—7.0LV8—N/AStandard, w/ 2 bolt Starter; Remanufactured
1967ChevroletCorvetteManual5.3LV8—N/ARemanufactured
1967JeepWagoneer—5.3LV8—N/ARemanufactured
1966BuickSkylark—6.6LV8—N/ARemanufactured
1966CadillacDeVille—7.0LV8—N/ARemanufactured
1966CadillacEldorado—7.0LV8—N/ARemanufactured
1966CadillacFleetwood—7.0LV8—N/ARemanufactured
1966ChevroletCorvette—7.0LV8—N/AStandard, w/ 2 bolt Starter; Remanufactured
1966ChevroletCorvetteManual5.3LV8—N/ARemanufactured
1966JeepWagoneer—5.3LV8—N/ARemanufactured
1965BuickSkylark—6.6LV8—N/ARemanufactured
1965CadillacDeVille—7.0LV8—N/ARemanufactured
1965CadillacEldorado—7.0LV8—N/ARemanufactured
1965CadillacFleetwood—7.0LV8—N/ARemanufactured
1965ChevroletCorvette—6.5LV8—N/ARemanufactured
1965ChevroletCorvetteManual5.3LV8—N/ARemanufactured
1965JeepWagoneer—5.3LV8—N/ARemanufactured
1964ChevroletCorvetteManual5.3LV8—N/ARemanufactured
1963ChevroletCorvetteAutomatic5.3LV8—N/ARemanufactured
1962ChevroletCorvetteAutomatic5.3LV8—N/ARemanufactured
Directly replaces or cross-references 48 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Anchor — 3549Anchor — 3567Anchor — 3570Anchor — 3631110734011073521107367110738511083201108326110832711083311108351110835411083711108381110839211084201108433110849011084971108499110850411085071108521110874311087601108763110876811087891108791110902411090381109041110906211090631109492189414019886021988711199822719983211998435199845210496870123042031913615688863068