Prothane 65-95 GM Rear Upper Coil Spring Isolator - Black — Fits 1965-1995 GM Vehicles

SKU: PRO7-1706-BL
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About Prothane

Prothane engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Prothane lineup with fast shipping and expert fitment support — order with confidence.

Prothane 65-95 GM Rear Upper Coil Spring Isolator - Black

Upgrade your classic GM vehicle's suspension with the Prothane 65-95 GM Rear Upper Coil Spring Isolator in sleek black. Expertly manufactured from high-density polyurethane, these isolators are designed to provide superior cushioning and support for your rear coil springs, ensuring a smoother, quieter, and more controlled ride.

Benefits of Prothane Polyurethane Isolators:

  • Durable Construction: Crafted from Prothane's renowned polyurethane material, offering exceptional resistance to abrasion, chemicals, and environmental degradation.
  • Noise & Vibration Reduction: Effectively absorbs road shock and dampens vibrations, significantly reducing noise, vibration, and harshness (NVH) for a more comfortable driving experience.
  • Direct Fit Replacement: Engineered as a direct replacement for original equipment isolators on 1965-1995 GM rear upper coil spring applications, guaranteeing precise fitment and straightforward installation.
  • Long-Lasting Performance: Unlike stock rubber components that can dry out, crack, and fail, Prothane polyurethane maintains its integrity and performance characteristics over time.
  • Improved Handling: By providing stable support for the coil springs, these isolators contribute to better vehicle stability and handling response.
  • Stealthy Black Finish: The black color offers a clean, understated look that complements any suspension setup.

Whether you're restoring a vintage GM muscle car or simply looking to enhance the ride quality of your daily driver, these Prothane isolators are an excellent choice. They are built to endure the demands of the road, providing reliable performance for years to come. Experience the difference quality polyurethane makes in your vehicle's suspension.

For reliable suspension upgrades, trust Prothane. Discover a wide selection of performance parts at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1971-1973 Buick Centurion Base
1973-1975 Buick Century Luxus
1973-1977 Buick Century Base
1975-1979 Buick Century Custom
1975-1979 Buick Century Special
1976 Buick Century Indianapolis 500 Pace Car
1978-1981 Buick Century Sport
1978-1987 Buick Century Limited
1980-1981 Buick Century Base
1982-1987 Buick Century Custom
1983-1986 Buick Century T-Type
1984 Buick Century Olympia Limited
1965-1967 Buick Electra Base
1966-1967 Buick Electra Custom
1968-1974 Buick Electra 225
1968-1974 Buick Electra 225 Custom
1973 Buick Electra Base
1974 Buick Electra 225 Limited
1975 Buick Electra Custom
1975-1984 Buick Electra Limited
1976-1979 Buick Electra 225
1978-1984 Buick Electra Park Avenue
1965-1973 Buick LeSabre Custom
1965-1981 Buick LeSabre Base
1974 Buick LeSabre Luxus
1975-1978 Buick LeSabre Custom
1977 Buick LeSabre Custom Sport
1978-1981 Buick LeSabre Sport
1979-1984 Buick LeSabre Limited
1982 Buick LeSabre Limited Edition F/E
1982-1984 Buick LeSabre Custom
1973-1987 Buick Regal Base
1976-1977 Buick Regal SR
1978-1982 Buick Regal Sport
1978-1987 Buick Regal Limited
1982 Buick Regal Limited Turbo
1983-1986 Buick Regal T-Type
1984-1987 Buick Regal Grand National
1966 Buick Riviera Gran Sport
1966-1978 Buick Riviera Base
1971 Buick Riviera Gran Sport
1975 Buick Riviera GS
1976 Buick Riviera Sport
1976 Buick Riviera SR
1978 Buick Riviera LXXV Anniversary Edition
1967-1972 Buick Skylark Base
1968-1972 Buick Skylark Custom
1970 Buick Skylark 350
1972 Buick Skylark 350
1965 Buick Wildcat Deluxe
1965-1969 Buick Wildcat Base
1965-1970 Buick Wildcat Custom
1966 Buick Wildcat Gran Sport
1971-1975 Chevrolet Bel Air Base
1971-1972 Chevrolet Biscayne Base
1971-1972 Chevrolet Caprice Base
1973-1990 Chevrolet Caprice Classic
1975-1976 Chevrolet Caprice Classic Sport
1976-1981 Chevrolet Caprice Classic Landau
1978 Chevrolet Caprice Classic Estate

…and 155 additional fitments. Contact us to confirm yours.

Product Details

Product Description
Part Numbers
Sizing & Fit

About Prothane

Prothane engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Prothane lineup with fast shipping and expert fitment support — order with confidence.

Prothane 65-95 GM Rear Upper Coil Spring Isolator - Black

Upgrade your classic GM vehicle's suspension with the Prothane 65-95 GM Rear Upper Coil Spring Isolator in sleek black. Expertly manufactured from high-density polyurethane, these isolators are designed to provide superior cushioning and support for your rear coil springs, ensuring a smoother, quieter, and more controlled ride.

Benefits of Prothane Polyurethane Isolators:

  • Durable Construction: Crafted from Prothane's renowned polyurethane material, offering exceptional resistance to abrasion, chemicals, and environmental degradation.
  • Noise & Vibration Reduction: Effectively absorbs road shock and dampens vibrations, significantly reducing noise, vibration, and harshness (NVH) for a more comfortable driving experience.
  • Direct Fit Replacement: Engineered as a direct replacement for original equipment isolators on 1965-1995 GM rear upper coil spring applications, guaranteeing precise fitment and straightforward installation.
  • Long-Lasting Performance: Unlike stock rubber components that can dry out, crack, and fail, Prothane polyurethane maintains its integrity and performance characteristics over time.
  • Improved Handling: By providing stable support for the coil springs, these isolators contribute to better vehicle stability and handling response.
  • Stealthy Black Finish: The black color offers a clean, understated look that complements any suspension setup.

Whether you're restoring a vintage GM muscle car or simply looking to enhance the ride quality of your daily driver, these Prothane isolators are an excellent choice. They are built to endure the demands of the road, providing reliable performance for years to come. Experience the difference quality polyurethane makes in your vehicle's suspension.

For reliable suspension upgrades, trust Prothane. Discover a wide selection of performance parts at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1971-1973 Buick Centurion Base
1973-1975 Buick Century Luxus
1973-1977 Buick Century Base
1975-1979 Buick Century Custom
1975-1979 Buick Century Special
1976 Buick Century Indianapolis 500 Pace Car
1978-1981 Buick Century Sport
1978-1987 Buick Century Limited
1980-1981 Buick Century Base
1982-1987 Buick Century Custom
1983-1986 Buick Century T-Type
1984 Buick Century Olympia Limited
1965-1967 Buick Electra Base
1966-1967 Buick Electra Custom
1968-1974 Buick Electra 225
1968-1974 Buick Electra 225 Custom
1973 Buick Electra Base
1974 Buick Electra 225 Limited
1975 Buick Electra Custom
1975-1984 Buick Electra Limited
1976-1979 Buick Electra 225
1978-1984 Buick Electra Park Avenue
1965-1973 Buick LeSabre Custom
1965-1981 Buick LeSabre Base
1974 Buick LeSabre Luxus
1975-1978 Buick LeSabre Custom
1977 Buick LeSabre Custom Sport
1978-1981 Buick LeSabre Sport
1979-1984 Buick LeSabre Limited
1982 Buick LeSabre Limited Edition F/E
1982-1984 Buick LeSabre Custom
1973-1987 Buick Regal Base
1976-1977 Buick Regal SR
1978-1982 Buick Regal Sport
1978-1987 Buick Regal Limited
1982 Buick Regal Limited Turbo
1983-1986 Buick Regal T-Type
1984-1987 Buick Regal Grand National
1966 Buick Riviera Gran Sport
1966-1978 Buick Riviera Base
1971 Buick Riviera Gran Sport
1975 Buick Riviera GS
1976 Buick Riviera Sport
1976 Buick Riviera SR
1978 Buick Riviera LXXV Anniversary Edition
1967-1972 Buick Skylark Base
1968-1972 Buick Skylark Custom
1970 Buick Skylark 350
1972 Buick Skylark 350
1965 Buick Wildcat Deluxe
1965-1969 Buick Wildcat Base
1965-1970 Buick Wildcat Custom
1966 Buick Wildcat Gran Sport
1971-1975 Chevrolet Bel Air Base
1971-1972 Chevrolet Biscayne Base
1971-1972 Chevrolet Caprice Base
1973-1990 Chevrolet Caprice Classic
1975-1976 Chevrolet Caprice Classic Sport
1976-1981 Chevrolet Caprice Classic Landau
1978 Chevrolet Caprice Classic Estate

…and 155 additional fitments. Contact us to confirm yours.

Product Details

Product Description

About Prothane

Prothane engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Prothane lineup with fast shipping and expert fitment support — order with confidence.

Prothane 65-95 GM Rear Upper Coil Spring Isolator - Black

Upgrade your classic GM vehicle's suspension with the Prothane 65-95 GM Rear Upper Coil Spring Isolator in sleek black. Expertly manufactured from high-density polyurethane, these isolators are designed to provide superior cushioning and support for your rear coil springs, ensuring a smoother, quieter, and more controlled ride.

Benefits of Prothane Polyurethane Isolators:

  • Durable Construction: Crafted from Prothane's renowned polyurethane material, offering exceptional resistance to abrasion, chemicals, and environmental degradation.
  • Noise & Vibration Reduction: Effectively absorbs road shock and dampens vibrations, significantly reducing noise, vibration, and harshness (NVH) for a more comfortable driving experience.
  • Direct Fit Replacement: Engineered as a direct replacement for original equipment isolators on 1965-1995 GM rear upper coil spring applications, guaranteeing precise fitment and straightforward installation.
  • Long-Lasting Performance: Unlike stock rubber components that can dry out, crack, and fail, Prothane polyurethane maintains its integrity and performance characteristics over time.
  • Improved Handling: By providing stable support for the coil springs, these isolators contribute to better vehicle stability and handling response.
  • Stealthy Black Finish: The black color offers a clean, understated look that complements any suspension setup.

Whether you're restoring a vintage GM muscle car or simply looking to enhance the ride quality of your daily driver, these Prothane isolators are an excellent choice. They are built to endure the demands of the road, providing reliable performance for years to come. Experience the difference quality polyurethane makes in your vehicle's suspension.

For reliable suspension upgrades, trust Prothane. Discover a wide selection of performance parts at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1971-1973 Buick Centurion Base
1973-1975 Buick Century Luxus
1973-1977 Buick Century Base
1975-1979 Buick Century Custom
1975-1979 Buick Century Special
1976 Buick Century Indianapolis 500 Pace Car
1978-1981 Buick Century Sport
1978-1987 Buick Century Limited
1980-1981 Buick Century Base
1982-1987 Buick Century Custom
1983-1986 Buick Century T-Type
1984 Buick Century Olympia Limited
1965-1967 Buick Electra Base
1966-1967 Buick Electra Custom
1968-1974 Buick Electra 225
1968-1974 Buick Electra 225 Custom
1973 Buick Electra Base
1974 Buick Electra 225 Limited
1975 Buick Electra Custom
1975-1984 Buick Electra Limited
1976-1979 Buick Electra 225
1978-1984 Buick Electra Park Avenue
1965-1973 Buick LeSabre Custom
1965-1981 Buick LeSabre Base
1974 Buick LeSabre Luxus
1975-1978 Buick LeSabre Custom
1977 Buick LeSabre Custom Sport
1978-1981 Buick LeSabre Sport
1979-1984 Buick LeSabre Limited
1982 Buick LeSabre Limited Edition F/E
1982-1984 Buick LeSabre Custom
1973-1987 Buick Regal Base
1976-1977 Buick Regal SR
1978-1982 Buick Regal Sport
1978-1987 Buick Regal Limited
1982 Buick Regal Limited Turbo
1983-1986 Buick Regal T-Type
1984-1987 Buick Regal Grand National
1966 Buick Riviera Gran Sport
1966-1978 Buick Riviera Base
1971 Buick Riviera Gran Sport
1975 Buick Riviera GS
1976 Buick Riviera Sport
1976 Buick Riviera SR
1978 Buick Riviera LXXV Anniversary Edition
1967-1972 Buick Skylark Base
1968-1972 Buick Skylark Custom
1970 Buick Skylark 350
1972 Buick Skylark 350
1965 Buick Wildcat Deluxe
1965-1969 Buick Wildcat Base
1965-1970 Buick Wildcat Custom
1966 Buick Wildcat Gran Sport
1971-1975 Chevrolet Bel Air Base
1971-1972 Chevrolet Biscayne Base
1971-1972 Chevrolet Caprice Base
1973-1990 Chevrolet Caprice Classic
1975-1976 Chevrolet Caprice Classic Sport
1976-1981 Chevrolet Caprice Classic Landau
1978 Chevrolet Caprice Classic Estate

…and 155 additional fitments. Contact us to confirm yours.

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