GM Mechanical Engine Fan - 18" Replacement Style 7-Blade Fan

Replacement radiator fan blade for various 1965–1973 GM models. This 18" diameter, 7-blade fan features squared-off blade tips and robust stamped steel construction to match the original configuration for a bolt-on service replacement. Designed for use with a fan clutch (sold separately), the blade delivers dependable cooling performance while restoring a factory-correct under hood appearance. Crafted for restoration projects, it offers period-correct geometry and materials ideal for show-quality and concours restorations while remaining durable for everyday drivers. Restores authentic presentation and helps preserve originality and resale value. Verify fan clutch bolt pattern and center hole diameter for proper fit prior to installation.

Features and Benefits

• Service replacement blade reproducing original geometry for authentic under hood appearance
• Stamped steel construction provides durable, OEM-style performance and long service life
• Squared-off blades, finish, and original rivet pattern deliver show-quality detail for restorations
• Designed for use with a fan clutch to ensure correct clearance and dependable cooling performance

Technical Information

• Quality Level: Economy
• Style: Service Replacement
• 7-blade fan with squared-off blade tips
• 18" diameter
• 3-1/4" bolt pattern (center to center)
• 2-1/2" diameter center hole
• 4 rivets per blade
• Replaces OEM #3947772

Camaro Applications

• 1967–1968 Chevrolet Camaro (327)
• 1968–1969 Chevrolet Camaro (396 with A/C)
• 1969 Chevrolet Camaro (with A/C and A/T)
• 1969 Chevrolet Camaro (without A/C)
• 1970–1973 Chevrolet Camaro (350, 396)
• 1970–1973 Chevrolet Camaro (6-cylinder with A/C)

Chevy II / Nova Applications

• 1968–1969 Chevrolet Chevy II (6-cylinder with A/C)
• 1968–1970 Chevrolet Nova (6-cylinder with A/C)
• 1968–1969 Chevrolet Chevy II Nova (327/275 HP)
• 1969 Chevrolet Nova (350 with A/C and A/T)
• 1970–1971 Chevrolet Nova (V8 with A/C)
• 1972–1973 Chevrolet Nova (350 with A/C)

Impala, Bel Air, Biscayne, Caprice Applications

• 1968–1969 Chevrolet Impala, Bel Air, Biscayne, Caprice (396, 427 Hi-Performance)
• 1968–1969 Chevrolet Impala, Bel Air, Biscayne, Caprice (6-cylinder with A/C)
• 1968–1969 Chevrolet Impala, Bel Air, Biscayne, Caprice (V8)
• 1970–1972 Chevrolet Impala, Bel Air, Biscayne, Caprice (V8 with A/C)
• 1970–1972 Chevrolet Impala, Bel Air, Biscayne, Caprice (6-cylinder with A/C)
• 1972–1973 Chevrolet Impala, Bel Air, Caprice (8-cylinder with A/C)

Chevrolet Truck Applications

• 1969–1972 Chevrolet Pickup Truck (V8 with A/C and HD cooling)
• 1969–1972 Chevrolet Suburban (V8 with A/C and HD cooling)
• 1969–1972 Chevrolet Blazer (V8 with A/C and HD cooling)

GMC Truck Applications

• 1969–1972 GMC Pickup Truck (V8 with A/C and HD cooling)
• 1969–1972 GMC Suburban (V8 with A/C and HD cooling)
• 1969–1972 GMC Jimmy (V8 with A/C and HD cooling)

Additional Information

• Center hole: 2-1/2" diameter
• Fan clutch bolt pattern: 3-1/4" center-to-center
• Fan diameter: 18"