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MPA Electrical 3631SN Starter Motor

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

Direct-drive design. Delivers dependable starter engagement with fewer moving parts.

1.5 kW output. Provides strong cranking power for reliable starts.

Delco manufacturer. Built to match trusted starter engineering.

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

$123.21Free shipping

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Starter for Classic GM Applications

MPA Electrical 3631SN is a 12-volt direct drive starter built for Delco-style applications that need a 1.5 kW unit with clockwise rotation and a 9-tooth drive. It is a practical replacement choice for a wide range of classic Buick, Cadillac, Chevrolet, Jeep, Oldsmobile, and Pontiac vehicles.

Use MPA Electrical 3631SN when you need a starter for vehicles such as the 1962-1969 Chevrolet Corvette, 1965-1981 Cadillac DeVille, or 1970-1981 Buick LeSabre. This part number is also referenced as 3631SN for ordering and catalog matching.

Key Features

Direct drive starter design for Delco applications
1.5 kW rating for 12-volt starting systems
Clockwise rotation
9-tooth drive configuration
Fits a broad range of classic GM and Jeep applications
MPA Electrical part number 3631SN

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; Optional, w/ Hydramatic trans.
Fits 1966-1969 Chevrolet Corvette, N/A; Standard, w/ 2 bolt Starter
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 weak cranking on 12-volt starting systems
No-start conditions caused by a worn starter motor
Intermittent starter engagement on Delco-style applications
Replacement needs for classic Chevrolet Corvette and Cadillac starter setups
Starting system service on Buick, Pontiac, Oldsmobile, and Jeep vehicles

Installation Notes and Tips

Confirm the vehicle’s original starter configuration before ordering, including rotation, tooth count, voltage, and mounting style. This starter is listed for N/A positions in the catalog fitment data, so match the application by year, make, model, and any notes shown for the vehicle.

For best results, compare the existing unit to MPA Electrical 3631SN and verify Delco-style fitment on the vehicle, especially on 1962-1969 Chevrolet Corvette, 1965-1981 Cadillac DeVille, and 1970-1981 Buick LeSabre applications.

Quality Assurance

MPA Electrical supplies this starter as a new replacement part for listed applications. Cross-reference coverage includes Anchor 3549 and 3567 for the same application.

This part fits 125 vehicles

Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

Year	Make	Model	Transmission	Liters	Cylinders	Fuel Type	Position	Notes
1987	Oldsmobile	Cutlass	—	5.0L	V8	—	N/A	New
1986	Oldsmobile	Cutlass	—	5.0L	V8	—	N/A	New
1985	Oldsmobile	Cutlass	—	5.0L	V8	—	N/A	New
1983	Cadillac	Commercial Chassis	—	6.0L	V8	—	N/A	New
1982	Cadillac	Commercial Chassis	—	6.0L	V8	—	N/A	New
1981	Buick	LeSabre	—	4.1L	V6	—	N/A	New
1981	Cadillac	Commercial Chassis	—	6.0L	V8	—	N/A	New
1981	Cadillac	DeVille	—	6.0L	V8	—	N/A	New
1981	Cadillac	DeVille	—	4.1L	V6	—	N/A	New
1981	Cadillac	Fleetwood	—	6.0L	V8	—	N/A	New
1981	Cadillac	Fleetwood	—	4.1L	V6	—	N/A	New
1981	Chevrolet	Camaro	—	3.8L	V6	—	N/A	New
1981	Chevrolet	Caprice	—	3.8L	V6	—	N/A	New
1981	Chevrolet	El Camino	—	3.8L	V6	—	N/A	New
1981	Chevrolet	Impala	—	3.8L	V6	—	N/A	New
1981	Chevrolet	Malibu	—	3.8L	V6	—	N/A	New
1981	Chevrolet	Monte Carlo	—	3.8L	V6	—	N/A	New
1981	Pontiac	LeMans	—	3.8L	V6	—	N/A	New
1980	Buick	LeSabre	—	5.7L	V8	GAS	N/A	New
1980	Buick	LeSabre	—	4.1L	V6	—	N/A	New
1980	Cadillac	Commercial Chassis	—	6.0L	V8	—	N/A	New
1980	Cadillac	DeVille	—	6.0L	V8	—	N/A	New
1980	Cadillac	DeVille	—	4.1L	V6	—	N/A	New
1980	Cadillac	Fleetwood	—	6.0L	V8	—	N/A	New
1980	Cadillac	Fleetwood	—	4.1L	V6	—	N/A	New
1980	Pontiac	Bonneville	—	5.7L	V8	—	N/A	New
1980	Pontiac	Catalina	—	5.7L	V8	—	N/A	New
1980	Pontiac	Laurentian	—	5.7L	V8	GAS	N/A	New
1980	Pontiac	Parisienne	—	5.7L	V8	GAS	N/A	New
1979	Buick	LeSabre	—	5.7L	V8	—	N/A	New
1979	Cadillac	Commercial Chassis	—	7.0L	V8	—	N/A	New
1979	Cadillac	DeVille	—	7.0L	V8	—	N/A	New
1979	Cadillac	Fleetwood	—	7.0L	V8	—	N/A	New
1979	Chevrolet	Monza	Automatic	5.0L	V8	—	N/A	New
1979	Pontiac	Bonneville	—	5.7L	V8	—	N/A	New
1979	Pontiac	Catalina	—	5.7L	V8	—	N/A	New
1978	Buick	LeSabre	—	5.7L	V8	—	N/A	New
1978	Cadillac	Commercial Chassis	—	7.0L	V8	—	N/A	New
1978	Cadillac	DeVille	—	7.0L	V8	—	N/A	New
1978	Cadillac	Fleetwood	—	7.0L	V8	—	N/A	New
1978	Pontiac	Bonneville	—	5.7L	V8	—	N/A	New
1978	Pontiac	Catalina	—	5.7L	V8	—	N/A	New
1977	Buick	LeSabre	—	5.7L	V8	—	N/A	New
1977	Cadillac	Commercial Chassis	—	7.0L	V8	—	N/A	New
1977	Cadillac	DeVille	—	7.0L	V8	—	N/A	New
1977	Cadillac	Fleetwood	—	7.0L	V8	—	N/A	New
1976	Buick	LeSabre	—	7.5L	V8	—	N/A	New
1976	Buick	Riviera	—	7.5L	V8	—	N/A	New
1976	Cadillac	Commercial Chassis	—	8.2L	V8	—	N/A	New
1976	Cadillac	DeVille	—	8.2L	V8	—	N/A	New
1976	Cadillac	Fleetwood	—	8.2L	V8	—	N/A	New
1975	Buick	LeSabre	—	7.5L	V8	—	N/A	New
1975	Buick	Riviera	—	7.5L	V8	—	N/A	New
1975	Cadillac	Commercial Chassis	—	8.2L	V8	—	N/A	New
1975	Cadillac	DeVille	—	8.2L	V8	—	N/A	New
1975	Cadillac	Fleetwood	—	8.2L	V8	—	N/A	New
1974	Buick	Century	—	7.5L	V8	—	N/A	New
1974	Buick	LeSabre	—	7.5L	V8	—	N/A	New
1974	Buick	Regal	—	7.5L	V8	—	N/A	New
1974	Buick	Riviera	—	7.5L	V8	—	N/A	New
1974	Cadillac	Commercial Chassis	—	7.7L	V8	—	N/A	New
1974	Cadillac	DeVille	—	7.7L	V8	—	N/A	New
1974	Cadillac	Fleetwood	—	7.7L	V8	—	N/A	New
1973	Buick	Century	—	7.5L	V8	—	N/A	New
1973	Buick	LeSabre	—	7.5L	V8	—	N/A	New
1973	Buick	Regal	—	7.5L	V8	—	N/A	New
1973	Buick	Riviera	—	7.5L	V8	—	N/A	New
1973	Cadillac	Commercial Chassis	—	7.7L	V8	—	N/A	New
1973	Cadillac	DeVille	—	7.7L	V8	—	N/A	New
1973	Cadillac	Fleetwood	—	7.7L	V8	—	N/A	New
1972	Buick	LeSabre	—	7.5L	V8	—	N/A	New
1972	Buick	Riviera	—	7.5L	V8	—	N/A	New
1972	Cadillac	DeVille	—	7.7L	V8	—	N/A	New
1972	Cadillac	Fleetwood	—	7.7L	V8	—	N/A	New
1971	Buick	LeSabre	—	7.5L	V8	—	N/A	New
1971	Buick	Riviera	—	7.5L	V8	—	N/A	New
1971	Buick	Skylark	—	7.5L	V8	—	N/A	New
1971	Cadillac	DeVille	—	7.7L	V8	—	N/A	New
1971	Cadillac	Fleetwood	—	7.7L	V8	—	N/A	New
1971	Jeep	Wagoneer	—	5.7L	V8	—	N/A	New
1970	Buick	LeSabre	—	7.5L	V8	—	N/A	New
1970	Buick	Riviera	—	7.5L	V8	—	N/A	New
1970	Buick	Skylark	—	7.5L	V8	—	N/A	New
1970	Cadillac	DeVille	—	7.7L	V8	—	N/A	New
1970	Cadillac	Fleetwood	—	7.7L	V8	—	N/A	New
1970	Jeep	Wagoneer	—	5.7L	V8	—	N/A	New
1969	Buick	Riviera	—	7.0L	V8	—	N/A	New
1969	Cadillac	DeVille	—	7.7L	V8	—	N/A	New
1969	Cadillac	Fleetwood	—	7.7L	V8	—	N/A	New
1969	Chevrolet	Bel Air	—	5.7L	V8	—	N/A	Optional, w/ Hydramatic trans.; New
1969	Chevrolet	Corvette	—	7.0L	V8	—	N/A	Standard, w/ 2 bolt Starter; New
1969	Chevrolet	Corvette	Manual	5.7L	V8	—	N/A	New
1969	Chevrolet	Nova	—	5.7L	V8	—	N/A	New
1968	Buick	Riviera	—	7.0L	V8	—	N/A	New
1968	Buick	Skylark	—	6.6L	V8	—	N/A	New
1968	Cadillac	DeVille	—	7.7L	V8	—	N/A	New
1968	Cadillac	Fleetwood	—	7.7L	V8	—	N/A	New
1968	Chevrolet	Corvette	—	7.0L	V8	—	N/A	Standard, w/ 2 bolt Starter; New
1968	Chevrolet	Corvette	Manual	5.3L	V8	—	N/A	New
1968	Chevrolet	Corvette	Manual	5.4L	V8	—	N/A	New
1968	Jeep	Wagoneer	—	5.3L	V8	—	N/A	New
1967	Buick	Riviera	—	7.0L	V8	—	N/A	New
1967	Buick	Skylark	—	6.6L	V8	—	N/A	New
1967	Cadillac	DeVille	—	7.0L	V8	—	N/A	New
1967	Cadillac	Fleetwood	—	7.0L	V8	—	N/A	New
1967	Chevrolet	Corvette	—	7.0L	V8	—	N/A	Standard, w/ 2 bolt Starter; New
1967	Chevrolet	Corvette	Manual	5.3L	V8	—	N/A	New
1967	Jeep	Wagoneer	—	5.3L	V8	—	N/A	New
1966	Buick	Skylark	—	6.6L	V8	—	N/A	New
1966	Cadillac	DeVille	—	7.0L	V8	—	N/A	New
1966	Cadillac	Eldorado	—	7.0L	V8	—	N/A	New
1966	Cadillac	Fleetwood	—	7.0L	V8	—	N/A	New
1966	Chevrolet	Corvette	—	7.0L	V8	—	N/A	Standard, w/ 2 bolt Starter; New
1966	Chevrolet	Corvette	Manual	5.3L	V8	—	N/A	New
1966	Jeep	Wagoneer	—	5.3L	V8	—	N/A	New
1965	Buick	Skylark	—	6.6L	V8	—	N/A	New
1965	Cadillac	DeVille	—	7.0L	V8	—	N/A	New
1965	Cadillac	Eldorado	—	7.0L	V8	—	N/A	New
1965	Cadillac	Fleetwood	—	7.0L	V8	—	N/A	New
1965	Chevrolet	Corvette	—	6.5L	V8	—	N/A	New
1965	Chevrolet	Corvette	Manual	5.3L	V8	—	N/A	New
1965	Jeep	Wagoneer	—	5.3L	V8	—	N/A	New
1964	Chevrolet	Corvette	Manual	5.3L	V8	—	N/A	New
1963	Chevrolet	Corvette	Automatic	5.3L	V8	—	N/A	New
1962	Chevrolet	Corvette	Automatic	5.3L	V8	—	N/A	New
No rows match your filter.

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