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Mevotech SMS611V Coil Spring Set - Rear

Brand	Mevotech 3764
Center Electrode Core Material	Copper
Center Electrode Tip Material	Iridium
Electrical Terminal Type	Non-Removable Nut
Ground Configuration	Standard
Ground Electrode Core Material	Nickel
Ground Electrode Quantity	1
Ground Electrode Tip Design	Taper Cut
Hex Size	5/8
Insulator Height	50.50
Manufacturer Heat Range	6
Part Number	BKR6EIX-11
Pre-Gap Size	.044
Reach	.75
Resistance	5000
Seat Type	Flat
Stock Number	3764
Thread Diameter	14.00
Fits	—142 vehicles

Coil spring set. Restores suspension support with a direct replacement design.

For suspension spring applications.

Cross-references 566-177, CC611 and JCS1661T for the same application. See all 3.

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Mevotech SMS611V Rear Coil Spring Set

Mevotech SMS611V is a rear coil spring set with variable rate construction for select full-size Cadillac, Oldsmobile, Pontiac, Buick, and Chevrolet applications. It is built for vehicles that need rear suspension support with application-specific fitment, including Cadillac DeVille, Fleetwood, and Brougham models.

Key Features

Rear coil spring set with variable rate design
Fits select 1971-1992 rear suspension applications
Application coverage for Cadillac, Oldsmobile, Pontiac, Buick, and Chevrolet
Direct fit for rear suspension service on listed vehicles
Cross-references Monroe Shocks & Struts 566-177 and CC611 for the same application

Detailed Description

Mevotech SMS611V is a rear coil spring set for vehicles listed in the fitment data, including 1977-1984 Cadillac Fleetwood, 1979 and 1984 Cadillac DeVille, 1990-1992 Cadillac Brougham, and 1977-1983 Oldsmobile 98. It also fits rear applications on 1971-1972 Chevrolet Caprice, Impala, and Bel Air, plus 1971-1973 Pontiac Bonneville and Catalina. The variable rate spring design supports rear suspension service where the original spring specification calls for this configuration. Part number SMS611V is also referenced by JCS1661T.

What It Is Used For

Replacing worn rear coil springs on listed Cadillac, Oldsmobile, Pontiac, Buick, and Chevrolet models
Restoring rear ride height on vehicles with sagging suspension
Addressing rear-end bottoming caused by fatigued springs
Correcting uneven rear stance on supported applications
Servicing rear suspension noise or handling changes related to spring wear

Installation Notes and Tips

Install SMS611V only on the rear position shown in the fitment data. Verify the exact year, make, model, and notes before ordering, especially for Cadillac DeVille and Fleetwood applications with auto level control or partition-related notes. Rear spring replacement should be performed with proper suspension tools and a full inspection of related components.

Quality Assurance

Mevotech supplies suspension components for service applications that require vehicle-specific fitment and consistent dimensional accuracy. SMS611V is cataloged for direct replacement use on the listed rear applications.

This part fits 142 vehicles

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

Year	Make	Model	Submodel	Body Type	# Doors	Liters	Cylinders	Fuel Type	Position	Notes
1992	Cadillac	Brougham	—	—	—	5.7L	V8	—	Rear	Coil Spring Set with Variable Rate.
1992	Cadillac	Brougham	—	—	—	5.0L	V8	—	Rear	Coil Spring Set with Variable Rate.
1991	Cadillac	Brougham	—	—	—	5.7L	V8	—	Rear	Coil Spring Set with Variable Rate.
1991	Cadillac	Brougham	—	—	—	5.0L	V8	—	Rear	Coil Spring Set with Variable Rate.
1990	Cadillac	Brougham	—	—	—	5.7L	V8	—	Rear	Coil Spring Set with Variable Rate.
1990	Cadillac	Brougham	—	—	—	5.0L	V8	—	Rear	Coil Spring Set with Variable Rate.
1986	Cadillac	Fleetwood	Brougham	—	—	—	—	—	Rear	Coil Spring Set with Variable Rate.
1985	Cadillac	Fleetwood	Brougham	—	4 Door	5.7L	V8	DIESEL	Rear	Coil Spring Set with Variable Rate.
1985	Cadillac	Fleetwood	Brougham	—	2 Door	5.7L	V8	DIESEL	Rear	Coil Spring Set with Variable Rate.
1985	Cadillac	Fleetwood	Brougham	—	4 Door	4.1L	V8	—	Rear	Coil Spring Set with Variable Rate.
1985	Cadillac	Fleetwood	—	—	2 Door	4.1L	V8	—	Rear	Coil Spring Set with Variable Rate.
1985	Cadillac	Fleetwood	Brougham	—	2 Door	4.1L	V8	—	Rear	Coil Spring Set with Variable Rate.
1985	Cadillac	Fleetwood	Brougham d'Elegance	—	2 Door	4.1L	V8	—	Rear	Coil Spring Set with Variable Rate.
1984	Cadillac	DeVille	—	—	—	5.7L	V8	DIESEL	Rear	Coil Spring Set with Variable Rate.
1984	Cadillac	DeVille	—	—	—	4.1L	V8	—	Rear	Coil Spring Set with Variable Rate.
1984	Cadillac	DeVille	—	—	—	—	—	GAS	Rear	Coil Spring Set with Variable Rate.
1984	Cadillac	Fleetwood	—	Limousine	4 Door	6.0L	V8	—	Rear	Variable rate spring; without Partition
1983	Cadillac	Fleetwood	—	Limousine	4 Door	—	—	GAS	Rear	Variable rate spring; without Partition
1983	Oldsmobile	98	—	Sedan	4 Door	5.7L	V8	DIESEL	Rear	Coil Spring Set with Variable Rate.
1983	Oldsmobile	98	—	Coupe	2 Door	5.7L	V8	DIESEL	Rear	Coil Spring Set with Variable Rate.
1983	Oldsmobile	98	Regency	Sedan	—	5.0L	V8	—	Rear	Coil Spring Set with Variable Rate.
1983	Oldsmobile	98	Regency Brougham	Sedan	—	5.0L	V8	—	Rear	Coil Spring Set with Variable Rate.
1983	Oldsmobile	98	Regency Brougham	Sedan	—	5.0L	V8	—	Rear	Heavy Duty Variable Rate Coil Spring Set
1983	Oldsmobile	98	Regency	Coupe	2 Door	5.0L	V8	—	Rear	Coil Spring Set with Variable Rate.
1983	Oldsmobile	98	Regency	Sedan	—	4.1L	V6	—	Rear	Coil Spring Set with Variable Rate.
1983	Oldsmobile	98	Regency Brougham	Sedan	—	4.1L	V6	—	Rear	Coil Spring Set with Variable Rate.
1983	Oldsmobile	98	Regency	Coupe	2 Door	4.1L	V6	—	Rear	Coil Spring Set with Variable Rate.
1982	Cadillac	Fleetwood	—	Limousine	4 Door	—	—	GAS	Rear	Variable rate spring; without Partition
1982	Oldsmobile	98	—	Sedan	4 Door	5.7L	V8	DIESEL	Rear	Coil Spring Set with Variable Rate.
1982	Oldsmobile	98	—	Coupe	2 Door	5.7L	V8	DIESEL	Rear	Coil Spring Set with Variable Rate.
1982	Oldsmobile	98	Regency	Sedan	—	5.0L	V8	—	Rear	Coil Spring Set with Variable Rate.
1982	Oldsmobile	98	Regency Brougham	Sedan	—	5.0L	V8	—	Rear	Coil Spring Set with Variable Rate.
1982	Oldsmobile	98	Regency	Coupe	2 Door	5.0L	V8	—	Rear	Coil Spring Set with Variable Rate.
1982	Oldsmobile	98	Regency	Sedan	—	4.1L	V6	—	Rear	Coil Spring Set with Variable Rate.
1982	Oldsmobile	98	Regency Brougham	Sedan	—	4.1L	V6	—	Rear	Coil Spring Set with Variable Rate.
1982	Oldsmobile	98	Regency	Coupe	2 Door	4.1L	V6	—	Rear	Coil Spring Set with Variable Rate.
1981	Cadillac	Fleetwood	—	Limousine	4 Door	—	—	GAS	Rear	Variable rate spring; without Partition
1981	Oldsmobile	98	—	—	—	5.7L	V8	DIESEL	Rear	Coil Spring Set with Variable Rate.
1981	Oldsmobile	98	—	—	—	5.0L	V8	—	Rear	Coil Spring Set with Variable Rate.
1981	Oldsmobile	98	Regency	Sedan	—	4.1L	V6	—	Rear	Coil Spring Set with Variable Rate.
1981	Oldsmobile	98	Luxury	Sedan	—	4.1L	V6	—	Rear	Coil Spring Set with Variable Rate.
1980	Cadillac	Fleetwood	—	Limousine	4 Door	—	—	GAS	Rear	Variable rate spring; without Partition
1980	Oldsmobile	98	—	—	—	5.7L	V8	DIESEL	Rear	Coil Spring Set with Variable Rate.
1980	Oldsmobile	98	—	Sedan	4 Door	5.7L	V8	—	Rear	Coil Spring Set with Variable Rate.
1980	Oldsmobile	98	—	Coupe	2 Door	5.7L	V8	—	Rear	Coil Spring Set with Variable Rate.
1980	Oldsmobile	98	—	Sedan	4 Door	5.0L	V8	—	Rear	Coil Spring Set with Variable Rate.
1980	Oldsmobile	98	—	Coupe	2 Door	5.0L	V8	—	Rear	Coil Spring Set with Variable Rate.
1979	Cadillac	DeVille	—	Sedan	—	—	—	—	Rear	Coil Spring Set with Variable Rate.
1979	Cadillac	DeVille	—	Coupe	2 Door	—	—	—	Rear	Coil Spring Set with Variable Rate.
1979	Cadillac	Fleetwood	—	Limousine	4 Door	—	—	—	Rear	Variable rate spring; without Partition
1979	Oldsmobile	98	—	Sedan	4 Door	6.6L	V8	—	Rear	Coil Spring Set with Variable Rate.
1979	Oldsmobile	98	—	Coupe	2 Door	6.6L	V8	—	Rear	Coil Spring Set with Variable Rate.
1979	Oldsmobile	98	—	—	—	5.7L	V8	DIESEL	Rear	Coil Spring Set with Variable Rate.
1979	Oldsmobile	98	—	Sedan	4 Door	5.7L	V8	—	Rear	Coil Spring Set with Variable Rate.
1979	Oldsmobile	98	—	Coupe	2 Door	5.7L	V8	—	Rear	Coil Spring Set with Variable Rate.
1978	Cadillac	DeVille	—	Sedan	—	—	—	—	Rear	Variable rate spring; w/ Auto Level Control
1978	Cadillac	DeVille	—	Sedan	—	—	—	—	Rear	Variable rate spring; w/o Auto Level Control
1978	Cadillac	DeVille	—	Coupe	2 Door	—	—	—	Rear	Variable rate spring; w/ Auto Level Control
1978	Cadillac	DeVille	—	Coupe	2 Door	—	—	—	Rear	Variable rate spring; w/o Auto Level Control
1978	Cadillac	Fleetwood	—	Limousine	4 Door	—	—	—	Rear	Variable rate spring; without Partition
1978	Oldsmobile	98	Regency	—	—	6.6L	V8	—	Rear	Coil Spring Set with Variable Rate.
1978	Oldsmobile	98	Luxury	—	—	6.6L	V8	—	Rear	Coil Spring Set with Variable Rate.
1978	Oldsmobile	98	Regency	—	—	5.7L	V8	DIESEL	Rear	Coil Spring Set with Variable Rate.
1978	Oldsmobile	98	Luxury	—	—	5.7L	V8	DIESEL	Rear	Coil Spring Set with Variable Rate.
1978	Oldsmobile	98	Regency	Sedan	4 Door	5.7L	V8	GAS	Rear	Coil Spring Set with Variable Rate.
1978	Oldsmobile	98	Luxury	Sedan	4 Door	5.7L	V8	GAS	Rear	Coil Spring Set with Variable Rate.
1978	Oldsmobile	98	Regency	Coupe	2 Door	5.7L	V8	GAS	Rear	Coil Spring Set with Variable Rate.
1978	Oldsmobile	98	Luxury	Coupe	2 Door	5.7L	V8	GAS	Rear	Coil Spring Set with Variable Rate.
1978	Oldsmobile	Toronado	—	—	—	—	—	—	Rear	Coil Spring Set with Variable Rate.
1977	Cadillac	DeVille	—	Sedan	—	—	—	—	Rear	Variable rate spring; w/ Auto Level Control
1977	Cadillac	DeVille	—	Sedan	—	—	—	—	Rear	Variable rate spring; w/o Auto Level Control
1977	Cadillac	DeVille	—	Coupe	2 Door	—	—	—	Rear	Variable rate spring; w/ Auto Level Control
1977	Cadillac	DeVille	—	Coupe	2 Door	—	—	—	Rear	Variable rate spring; w/o Auto Level Control
1977	Cadillac	Fleetwood	—	Limousine	4 Door	—	—	—	Rear	Variable rate spring; without Partition
1977	Oldsmobile	98	—	—	—	6.6L	V8	—	Rear	Coil Spring Set with Variable Rate.
1977	Oldsmobile	98	—	—	—	5.7L	V8	—	Rear	Coil Spring Set with Variable Rate.
1977	Oldsmobile	Toronado	—	—	—	—	—	—	Rear	Coil Spring Set with Variable Rate.
1976	Oldsmobile	Toronado	—	—	—	—	—	—	Rear	Coil Spring Set with Variable Rate.
1975	Oldsmobile	Toronado	—	Coupe	2 Door	—	—	—	Rear	Coil Spring Set with Variable Rate.
1975	Pontiac	Catalina	—	Sedan	—	—	—	—	Rear	Coil Spring Set with Variable Rate.
1975	Pontiac	Catalina	—	Coupe	2 Door	—	—	—	Rear	Coil Spring Set with Variable Rate.
1974	Oldsmobile	Toronado	—	Coupe	2 Door	—	—	—	Rear	Coil Spring Set with Variable Rate.
1974	Pontiac	Catalina	—	Sedan	—	—	—	—	Rear	Coil Spring Set with Variable Rate.
1974	Pontiac	Catalina	—	Hardtop	—	—	—	—	Rear	Coil Spring Set with Variable Rate.
1974	Pontiac	Catalina	—	Wagon	4 Door	—	—	—	Rear	Coil Spring Set with Variable Rate.
1973	Pontiac	Bonneville	—	—	—	—	—	—	Rear	Coil Spring Set with Variable Rate.
1973	Pontiac	Catalina	—	Sedan	4 Door	—	—	—	Rear	Coil Spring Set with Variable Rate.
1973	Pontiac	Catalina	—	Hardtop	4 Door	—	—	—	Rear	Coil Spring Set with Variable Rate.
1973	Pontiac	Catalina	—	Hardtop	2 Door	—	—	—	Rear	Coil Spring Set with Variable Rate.
1972	Buick	LeSabre	—	Sedan	4 Door	7.5L	V8	—	Rear	Coil Spring Set with Variable Rate.
1972	Buick	LeSabre	Custom	Sedan	4 Door	7.5L	V8	—	Rear	Coil Spring Set with Variable Rate.
1972	Buick	LeSabre	—	Hardtop	2 Door	7.5L	V8	—	Rear	Coil Spring Set with Variable Rate.
1972	Buick	LeSabre	Custom	Hardtop	2 Door	7.5L	V8	—	Rear	Coil Spring Set with Variable Rate.
1972	Buick	LeSabre	—	Sedan	4 Door	5.7L	V8	—	Rear	Coil Spring Set with Variable Rate.
1972	Buick	LeSabre	Custom	Sedan	4 Door	5.7L	V8	—	Rear	Coil Spring Set with Variable Rate.
1972	Buick	LeSabre	—	Hardtop	2 Door	5.7L	V8	—	Rear	Coil Spring Set with Variable Rate.
1972	Buick	LeSabre	Custom	Hardtop	2 Door	5.7L	V8	—	Rear	Coil Spring Set with Variable Rate.
1972	Chevrolet	Bel Air	—	—	—	4.1L	L6	—	Rear	Coil Spring Set with Variable Rate.
1972	Chevrolet	Caprice	Base	—	—	7.4L	V8	—	Rear	Coil Spring Set with Variable Rate.
1972	Chevrolet	Caprice	—	Hardtop	—	6.6L	V8	—	Rear	Coil Spring Set with Variable Rate.
1972	Chevrolet	Caprice	Base	—	—	6.6L	V8	—	Rear	Coil Spring Set with Variable Rate.
1972	Chevrolet	Caprice	—	—	—	4.1L	L6	—	Rear	Coil Spring Set with Variable Rate.
1972	Chevrolet	Impala	—	Sedan	—	7.4L	V8	—	Rear	Coil Spring Set with Variable Rate.
1972	Chevrolet	Impala	—	Hardtop	—	7.4L	V8	—	Rear	Coil Spring Set with Variable Rate.
1972	Chevrolet	Impala	—	Convertible	2 Door	7.4L	V8	—	Rear	Coil Spring Set with Variable Rate.
1972	Chevrolet	Impala	—	Sedan	—	6.6L	V8	—	Rear	Coil Spring Set with Variable Rate.
1972	Chevrolet	Impala	—	Hardtop	—	6.6L	V8	—	Rear	Coil Spring Set with Variable Rate.
1972	Chevrolet	Impala	—	Convertible	2 Door	6.6L	V8	—	Rear	Coil Spring Set with Variable Rate.
1972	Chevrolet	Impala	—	—	—	4.1L	L6	—	Rear	Coil Spring Set with Variable Rate.
1972	Oldsmobile	Delta 88	—	Sedan	—	7.5L	V8	—	Rear	Coil Spring Set with Variable Rate.
1972	Oldsmobile	Delta 88	Royale	Sedan	—	7.5L	V8	—	Rear	Coil Spring Set with Variable Rate.
1972	Oldsmobile	Delta 88	Royale	Convertible	2 Door	7.5L	V8	—	Rear	Coil Spring Set with Variable Rate.
1972	Oldsmobile	Delta 88	Royale	Sedan	—	5.7L	V8	—	Rear	Coil Spring Set with Variable Rate.
1972	Oldsmobile	Delta 88	Royale	Hardtop	—	5.7L	V8	—	Rear	Coil Spring Set with Variable Rate.
1972	Oldsmobile	Delta 88	—	—	—	5.7L	V8	—	Rear	Coil Spring Set with Variable Rate.
1972	Oldsmobile	Delta 88	Royale	Convertible	2 Door	5.7L	V8	—	Rear	Coil Spring Set with Variable Rate.
1972	Pontiac	Bonneville	—	Sedan	4 Door	—	—	—	Rear	Coil Spring Set with Variable Rate.
1972	Pontiac	Bonneville	—	Hardtop	4 Door	—	—	—	Rear	Coil Spring Set with Variable Rate.
1972	Pontiac	Bonneville	—	Hardtop	2 Door	—	—	—	Rear	Coil Spring Set with Variable Rate.
1971	Buick	LeSabre	—	Sedan	4 Door	7.5L	V8	—	Rear	Coil Spring Set with Variable Rate.
1971	Buick	LeSabre	—	Hardtop	2 Door	7.5L	V8	—	Rear	Coil Spring Set with Variable Rate.
1971	Buick	LeSabre	—	Sedan	4 Door	5.7L	V8	—	Rear	Coil Spring Set with Variable Rate.
1971	Buick	LeSabre	—	Hardtop	2 Door	5.7L	V8	—	Rear	Coil Spring Set with Variable Rate.
1971	Buick	LeSabre	Custom	Sedan	4 Door	—	—	—	Rear	Coil Spring Set with Variable Rate.
1971	Buick	LeSabre	Custom	Hardtop	2 Door	—	—	—	Rear	Coil Spring Set with Variable Rate.
1971	Chevrolet	Caprice	Base	—	—	7.4L	V8	—	Rear	Coil Spring Set with Variable Rate.
1971	Chevrolet	Caprice	Base	—	—	6.6L	V8	—	Rear	Coil Spring Set with Variable Rate.
1971	Chevrolet	Impala	—	Sedan	—	7.4L	V8	—	Rear	Coil Spring Set with Variable Rate.
1971	Chevrolet	Impala	—	Hardtop	—	7.4L	V8	—	Rear	Coil Spring Set with Variable Rate.
1971	Chevrolet	Impala	—	Convertible	2 Door	7.4L	V8	—	Rear	Coil Spring Set with Variable Rate.
1971	Chevrolet	Impala	—	Sedan	—	6.6L	V8	—	Rear	Coil Spring Set with Variable Rate.
1971	Chevrolet	Impala	—	Hardtop	—	6.6L	V8	—	Rear	Coil Spring Set with Variable Rate.
1971	Chevrolet	Impala	—	Convertible	2 Door	6.6L	V8	—	Rear	Coil Spring Set with Variable Rate.
1971	Chevrolet	Impala	—	—	—	4.1L	L6	—	Rear	Coil Spring Set with Variable Rate.
1971	Oldsmobile	Delta 88	—	—	—	7.5L	V8	—	Rear	Coil Spring Set with Variable Rate.
1971	Oldsmobile	Delta 88	Custom	Sedan	—	7.5L	V8	—	Rear	Coil Spring Set with Variable Rate.
1971	Oldsmobile	Delta 88	Custom	Hardtop	—	7.5L	V8	—	Rear	Coil Spring Set with Variable Rate.
1971	Oldsmobile	Delta 88	Royale	Convertible	2 Door	7.5L	V8	—	Rear	Coil Spring Set with Variable Rate.
1971	Oldsmobile	Delta 88	—	—	—	5.7L	V8	—	Rear	Coil Spring Set with Variable Rate.
1971	Pontiac	Bonneville	—	Sedan	4 Door	—	—	—	Rear	Coil Spring Set with Variable Rate.
1971	Pontiac	Bonneville	—	Hardtop	4 Door	—	—	—	Rear	Coil Spring Set with Variable Rate.
1971	Pontiac	Bonneville	—	Hardtop	2 Door	—	—	—	Rear	Coil Spring Set with Variable Rate.
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Directly replaces or cross-references 3 part numbers

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

566-177CC611JCS1661T

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