1990 GMC K1500 Fan Clutch

Part Number: 4021-05367847

Notes: Engine Cooling Fan Clutch -- Clockwise (Standard) Rotation; Thermal Fan Clutch; Severe Duty; With 3.42 or Lower Rear Axle Ratio

Features:

• Manufactured to meet or exceed OEM specifications.

Part Number: 4021-05367847

Notes: Engine Cooling Fan Clutch -- Clockwise (Standard) Rotation; Thermal Fan Clutch; Severe Duty; With 3.73 or Higher Rear Axle Ratio

Features:

• Manufactured to meet or exceed OEM specifications.

Part Number: 4021-05367880

Notes: Engine Cooling Fan Clutch -- Clockwise (Standard) Rotation; Thermal Fan Clutch; Severe Duty; With 4 Bolt Fan Clutch

Features:

• Manufactured to meet or exceed OEM specifications.

Part Number: 4021-05367777

Notes: Engine Cooling Fan Clutch -- Clockwise (Standard) Rotation; Thermal Fan Clutch; With 3.42 or Lower Rear Axle Ratio; Heavy Duty

Features:

• Manufactured to meet or exceed OEM specifications.

Part Number: 4021-05367777

Notes: Engine Cooling Fan Clutch -- Clockwise (Standard) Rotation; Thermal Fan Clutch; With 3.73 or Higher Rear Axle Ratio; Heavy Duty

Features:

• Manufactured to meet or exceed OEM specifications.

Part Number: 4021-05367878

Notes: Engine Cooling Fan Clutch -- Thermal Fan Clutch; Counter Clockwise (Reverse) Rotation; Severe Duty

Features:

• Manufactured to meet or exceed OEM specifications.

Part Number: 4021-05367871

Notes: Engine Cooling Fan Clutch -- Thermal Fan Clutch; Counter Clockwise (Reverse) Rotation; Severe Duty; With 3.42 or Lower Rear Axle Ratio; With AC

Features:

• Manufactured to meet or exceed OEM specifications.

Part Number: 4021-05367871

Notes: Engine Cooling Fan Clutch -- Thermal Fan Clutch; Counter Clockwise (Reverse) Rotation; Severe Duty; With 3.73 or Higher Rear Axle Ratio

Features:

• Manufactured to meet or exceed OEM specifications.

Part Number: 4021-05367879

Notes: Engine Cooling Fan Clutch -- Thermal Fan Clutch; Counter Clockwise (Reverse) Rotation; With 3.42 or Lower Rear Axle Ratio; Heavy Duty; With AC

Features:

• Manufactured to meet or exceed OEM specifications.

Part Number: 4021-05367879

Notes: Engine Cooling Fan Clutch -- Thermal Fan Clutch; Counter Clockwise (Reverse) Rotation; With 3.73 or Higher Rear Axle Ratio; Heavy Duty

Features:

• Manufactured to meet or exceed OEM specifications.

Part Number: 4021-05367876

Notes: Engine Cooling Fan Clutch -- Thermal Fan Clutch; Standard Duty; Counter Clockwise (Reverse) Rotation; With 3.08 or 3.42 Rear Axle Ratio; Without AC

Features:

• Manufactured to meet or exceed OEM specifications.

Part Number: 4021-05367876

Notes: Engine Cooling Fan Clutch -- Thermal Fan Clutch; Standard Duty; Counter Clockwise (Reverse) Rotation; With 3.42 or Lower Rear Axle Ratio; Without AC

Features:

• Manufactured to meet or exceed OEM specifications.

Part Number: 4021-09066416

Notes: Fan Clutch -- Reverse Rotation; Heavy Duty Thermal Fan Clutch; With 3.42 Or Lower Rear Axle Ratio, Fan Mounting Holes are 10mm.; With AC

Features:

• Designed, tested, and built by application
• OE performance, fit, and appearance
• Precision machined
• Out of box installation

Part Number: 4021-09066416

Notes: Fan Clutch -- Reverse Rotation; Heavy Duty Thermal Fan Clutch; With 3.42 Or Lower Rear Axle Ratio; With AC

Features:

• Designed, tested, and built by application
• OE performance, fit, and appearance
• Precision machined
• Out of box installation

Part Number: 4021-09066416

Notes: Fan Clutch -- Reverse Rotation; Heavy Duty Thermal Fan Clutch; With 3.73 Or Higher Rear Axle Ratio

Features:

• Designed, tested, and built by application
• OE performance, fit, and appearance
• Precision machined
• Out of box installation

Part Number: 4021-09066440

Notes: Fan Clutch -- Reverse Rotation; Optional Duty Thermal Fan Clutch; With 3.42 Or Lower Rear Axle Ratio, Fan Mounting Holes are 10mm.; With AC

Features:

• Designed, tested, and built by application
• OE performance, fit, and appearance
• Precision machined
• Out of box installation

Part Number: 4021-09066440

Notes: Fan Clutch -- Reverse Rotation; Optional Duty Thermal Fan Clutch; With 3.42 Or Lower Rear Axle Ratio; With AC

Features:

• Designed, tested, and built by application
• OE performance, fit, and appearance
• Precision machined
• Out of box installation

Part Number: 4021-09066440

Notes: Fan Clutch -- Reverse Rotation; Optional Duty Thermal Fan Clutch; With 3.73 Or Higher Rear Axle Ratio

Features:

• Designed, tested, and built by application
• OE performance, fit, and appearance
• Precision machined
• Out of box installation

Part Number: 4021-09066416

Notes: Fan Clutch -- Reverse Rotation; Optional Heavy Duty Thermal Fan Clutch; With 3.42 Or Lower Rear Axle Ratio; With AC

Features:

• Designed, tested, and built by application
• OE performance, fit, and appearance
• Precision machined
• Out of box installation

Part Number: 4021-09066416

Notes: Fan Clutch -- Reverse Rotation; Optional Heavy Duty Thermal Fan Clutch; With 3.73 Or Higher Rear Axle Ratio

Features:

• Designed, tested, and built by application
• OE performance, fit, and appearance
• Precision machined
• Out of box installation

Part Number: 4021-09066416

Notes: Fan Clutch -- Reverse Rotation; Optional Heavy Duty Thermal Fan Clutch; With 3.73 Or Higher Rear Axle Ratio, Fan Mounting Holes are 10mm.

Features:

• Designed, tested, and built by application
• OE performance, fit, and appearance
• Precision machined
• Out of box installation

Part Number: 4021-05042365

Notes: Fan Clutch -- Reverse Rotation; Severe Duty Thermal Fan Clutch; Fan Mounting Holes are 10mm

Features:

• Designed, tested, and built by application
• OE performance, fit, and appearance
• Precision machined
• Out of box installation

Part Number: 4021-09066440

Notes: Fan Clutch -- Reverse Rotation; Severe Duty Thermal Fan Clutch; With 3.42 Or Lower Rear Axle Ratio; With AC

Features:

• Designed, tested, and built by application
• OE performance, fit, and appearance
• Precision machined
• Out of box installation

Part Number: 4021-09066440

Notes: Fan Clutch -- Reverse Rotation; Severe Duty Thermal Fan Clutch; With 3.73 Or Higher Rear Axle Ratio

Features:

• Designed, tested, and built by application
• OE performance, fit, and appearance
• Precision machined
• Out of box installation

Part Number: 4021-09066440

Notes: Fan Clutch -- Reverse Rotation; Severe Duty Thermal Fan Clutch; With 3.73 Or Higher Rear Axle Ratio, Fan Mounting Holes are 10mm.

Features:

• Designed, tested, and built by application
• OE performance, fit, and appearance
• Precision machined
• Out of box installation

Part Number: 4021-05042345

Notes: Fan Clutch -- Reverse Rotation; Standard Duty Thermal Fan Clutch; With 3.08 or 3.42 Rear Axle Ratio; Without AC

Features:

• Designed, tested, and built by application
• OE performance, fit, and appearance
• Precision machined
• Out of box installation

Part Number: 4021-05042345

Notes: Fan Clutch -- Reverse Rotation; Standard Duty Thermal Fan Clutch; With 3.42 Or Lower Rear Axle Ratio; Without AC

Features:

• Designed, tested, and built by application
• OE performance, fit, and appearance
• Precision machined
• Out of box installation

Part Number: 4021-05587473

Notes: Fan Clutch -- Standard Rotation; Heavy Duty Thermal Fan Clutch; For Applications Requiring Fan Clutch Height Less Than 3"; With 3.42 Or Lower Rear Axle Ratio, Fan Mounting Holes are 5/16"

Features:

• Designed, tested, and built by application
• OE performance, fit, and appearance
• Precision machined
• Out of box installation

Part Number: 4021-05042354

Notes: Fan Clutch -- Standard Rotation; Heavy Duty Thermal Fan Clutch; Optional Heavy Duty Thermal Fan Clutch; OE Fan Clutch Height

Features:

• Designed, tested, and built by application
• OE performance, fit, and appearance
• Precision machined
• Out of box installation

Part Number: 4021-09066451

Notes: Fan Clutch -- Standard Rotation; Non-Thermal Fan Clutch; Optional Non-Thermal Fan Clutch; Without AC

Features:

• Designed, tested, and built by application
• OE performance, fit, and appearance
• Precision machined
• Out of box installation

Part Number: 4021-05587473

Notes: Fan Clutch -- Standard Rotation; Optional Heavy Duty Thermal Fan Clutch; For Applications Requiring Fan Clutch Height Less Than 3"; With 3.73 Or Higher Rear Axle Ratio, Fan Mounting Holes are 5/16"

Features:

• Designed, tested, and built by application
• OE performance, fit, and appearance
• Precision machined
• Out of box installation

Part Number: 4021-09066453

Notes: Fan Clutch -- Standard Rotation; Severe Duty Thermal Fan Clutch; Fan Mounting Holes are 5/16"

Features:

• Designed, tested, and built by application
• OE performance, fit, and appearance
• Precision machined
• Out of box installation

Part Number: 4021-07965826

Notes: Engine Cooling Fan Clutch -- excluding Diesel Engines

Part Number: 4021-05151639

Notes: Fan Clutch -- Reverse Rotation; Heavy Duty Thermal Fan Clutch; With 3.42 Or Lower Rear Axle Ratio, Fan Mounting Holes are 10mm.; With AC

Features:

• Designed, tested, and built by application
• OE performance, fit, and appearance
• Precision machined
• Out of box installation

Part Number: 4021-05151639

Notes: Fan Clutch -- Reverse Rotation; Heavy Duty Thermal Fan Clutch; With 3.42 Or Lower Rear Axle Ratio; With AC

Features:

• Designed, tested, and built by application
• OE performance, fit, and appearance
• Precision machined
• Out of box installation

Part Number: 4021-05151639

Notes: Fan Clutch -- Reverse Rotation; Heavy Duty Thermal Fan Clutch; With 3.73 Or Higher Rear Axle Ratio

Features:

• Designed, tested, and built by application
• OE performance, fit, and appearance
• Precision machined
• Out of box installation

Part Number: 4021-09160820

Notes: Fan Clutch -- Reverse Rotation; Optional Duty Thermal Fan Clutch; With 3.42 Or Lower Rear Axle Ratio, Fan Mounting Holes are 10mm.; With AC

Features:

• Designed, tested, and built by application
• OE performance, fit, and appearance
• Precision machined
• Out of box installation

Part Number: 4021-09160820

Notes: Fan Clutch -- Reverse Rotation; Optional Duty Thermal Fan Clutch; With 3.42 Or Lower Rear Axle Ratio; With AC

Features:

• Designed, tested, and built by application
• OE performance, fit, and appearance
• Precision machined
• Out of box installation

Part Number: 4021-09160820

Notes: Fan Clutch -- Reverse Rotation; Optional Duty Thermal Fan Clutch; With 3.73 Or Higher Rear Axle Ratio

Features:

• Designed, tested, and built by application
• OE performance, fit, and appearance
• Precision machined
• Out of box installation

Part Number: 4021-05151639

Notes: Fan Clutch -- Reverse Rotation; Optional Heavy Duty Thermal Fan Clutch; With 3.42 Or Lower Rear Axle Ratio; With AC

Features:

• Designed, tested, and built by application
• OE performance, fit, and appearance
• Precision machined
• Out of box installation

Part Number: 4021-05151639

Notes: Fan Clutch -- Reverse Rotation; Optional Heavy Duty Thermal Fan Clutch; With 3.73 Or Higher Rear Axle Ratio

Features:

• Designed, tested, and built by application
• OE performance, fit, and appearance
• Precision machined
• Out of box installation

Part Number: 4021-05151639

Notes: Fan Clutch -- Reverse Rotation; Optional Heavy Duty Thermal Fan Clutch; With 3.73 Or Higher Rear Axle Ratio, Fan Mounting Holes are 10mm.

Features:

• Designed, tested, and built by application
• OE performance, fit, and appearance
• Precision machined
• Out of box installation

Part Number: 4021-05103967

Notes: Fan Clutch -- Reverse Rotation; Severe Duty Thermal Fan Clutch; Fan Mounting Holes are 10mm

Features:

• Designed, tested, and built by application
• OE performance, fit, and appearance
• Precision machined
• Out of box installation

Part Number: 4021-09160820

Notes: Fan Clutch -- Reverse Rotation; Severe Duty Thermal Fan Clutch; With 3.42 Or Lower Rear Axle Ratio; With AC

Features:

• Designed, tested, and built by application
• OE performance, fit, and appearance
• Precision machined
• Out of box installation

Part Number: 4021-09160820

Notes: Fan Clutch -- Reverse Rotation; Severe Duty Thermal Fan Clutch; With 3.73 Or Higher Rear Axle Ratio

Features:

• Designed, tested, and built by application
• OE performance, fit, and appearance
• Precision machined
• Out of box installation

Part Number: 4021-09160820

Notes: Fan Clutch -- Reverse Rotation; Severe Duty Thermal Fan Clutch; With 3.73 Or Higher Rear Axle Ratio, Fan Mounting Holes are 10mm.

Features:

• Designed, tested, and built by application
• OE performance, fit, and appearance
• Precision machined
• Out of box installation

Part Number: 4021-09200126

Notes: Fan Clutch -- Reverse Rotation; Standard Duty Thermal Fan Clutch; With 3.08 or 3.42 Rear Axle Ratio; Without AC

Features:

• Designed, tested, and built by application
• OE performance, fit, and appearance
• Precision machined
• Out of box installation

Part Number: 4021-09200126

Notes: Fan Clutch -- Reverse Rotation; Standard Duty Thermal Fan Clutch; With 3.42 Or Lower Rear Axle Ratio; Without AC

Features:

• Designed, tested, and built by application
• OE performance, fit, and appearance
• Precision machined
• Out of box installation

Part Number: 4021-09134883

Notes: Fan Clutch -- Standard Rotation; Heavy Duty Thermal Fan Clutch; Optional Heavy Duty Thermal Fan Clutch; OE Fan Clutch Height

Features:

• Designed, tested, and built by application
• OE performance, fit, and appearance
• Precision machined
• Out of box installation

Part Number: 4021-05082145

Notes: Fan Clutch -- Standard Rotation; Non-Thermal Fan Clutch; Optional Non-Thermal Fan Clutch; Without AC

Features:

• Designed, tested, and built by application
• OE performance, fit, and appearance
• Precision machined
• Out of box installation

Part Number: 4021-09055910

Notes: Fan Clutch -- Standard Rotation; Severe Duty Thermal Fan Clutch; Fan Mounting Holes are 5/16"

Features:

• Designed, tested, and built by application
• OE performance, fit, and appearance
• Precision machined
• Out of box installation

Part Number: 4021-05982017

Notes: Engine Cooling Fan Clutch

Part Number: 4021-07479854

Notes: Engine Cooling Fan Clutch -- Code AR, AX, BD, GP, HK, JM

Part Number: 4021-05982016

Notes: Engine Cooling Fan Clutch -- Code DD, GG, GN

Part Number: 4021-05982008

Notes: Engine Cooling Fan Clutch -- Code GJ, HS

Part Number: 4021-05401330

Notes: Engine Cooling Fan Clutch -- New; 3.73R (GT4), 4.10R (GT5), 4.56R (HC4), ENGINE OIL COOLING SYSTEM (KC4); EXCEPT A/C - MANUAL CONTROLS (C60), HEAVY DUTY RADIATOR (V01), HEAVY DUTY RADIATOR & TRANSMISSION OIL COOLER (V02), HEAVY DUTY MANUAL TRANSMISSION COOLER (5A5), HEAVY DUTY AUTOMATIC TRANSMISSION COOLER (5A6); CODE HS

Part Number: 4021-05401330

Notes: Engine Cooling Fan Clutch -- New; 3.73R (GT4), 4.10R (GT5), 4.56R (HC4), HEAVY DUTY RADIATOR (V01), HEAVY DUTY RADIATOR & TRANSMISSION OIL COOLER (V02); EXCEPT HEAVY DUTY MANUAL TRANSMISSION COOLER (5A5), HEAVY DUTY AUTOMATIC TRANSMISSION COOLER (5A6); CODE HS

Part Number: 4021-05401330

Notes: Engine Cooling Fan Clutch -- New; A/C - MANUAL CONTROLS (C60), HEAVY DUTY MANUAL TRANSMISSION COOLER (5A5), HEAVY DUTY AUTOMATIC TRANSMISSION COOLER (5A6); CODE HS

Part Number: 4021-05401330

Notes: Engine Cooling Fan Clutch -- New; HEAVY DUTY MANUAL TRANSMISSION COOLER (5A5); CODE HS

Part Number: 4021-07332504

Notes: GM Original Equipment -- New; STAMPED GC, HB

Part Number: W0133-1924067

Notes: Genuine GM - Stamped #HS.GJ

Part Number: 4021-05401942

Notes: Professional -- New; Reverse Rotation; Standard Duty Thermal Fan Clutch; With 3.08 or 3.42 Rear Axle Ratio; Without AC

Part Number: 4021-05401942

Notes: Professional -- New; Reverse Rotation; Standard Duty Thermal Fan Clutch; With 3.42 Or Lower Rear Axle Ratio; Without AC

Part Number: 4021-05330016

Notes: Engine Cooling Fan Clutch -- CCW With A/C

Features:

• Designed and assembled in the USA
• Designed to meet/exceed OE fit, form and function
• The fan clutch is an important part of the engine and A/C cooling systems. The fan clutch pulls air across the radiator and condenser to help remove heat. An improperly operating fan clutch will impact overall performance of the engine and A/C system.
• Durability tested on every new design
• Leak Tested

Part Number: 4021-05330013

Notes: Engine Cooling Fan Clutch -- CCW Without AC

Features:

• Designed and assembled in the USA
• Designed to meet/exceed OE fit, form and function
• The fan clutch is an important part of the engine and A/C cooling systems. The fan clutch pulls air across the radiator and condenser to help remove heat. An improperly operating fan clutch will impact overall performance of the engine and A/C system.
• Durability tested on every new design
• Leak Tested

Part Number: 4021-05329978

Notes: Engine Cooling Fan Clutch -- Heavy Duty; Thermal

Features:

• Designed and assembled in the USA
• Designed to meet/exceed OE fit, form and function
• The fan clutch is an important part of the engine and A/C cooling systems. The fan clutch pulls air across the radiator and condenser to help remove heat. An improperly operating fan clutch will impact overall performance of the engine and A/C system.
• Durability tested on every new design
• Leak Tested

Part Number: 4021-05330016

Notes: Engine Cooling Fan Clutch -- Heavy Duty; With 3.73 or Higher Rear Axel Ratio

Features:

• Designed and assembled in the USA
• Designed to meet/exceed OE fit, form and function
• The fan clutch is an important part of the engine and A/C cooling systems. The fan clutch pulls air across the radiator and condenser to help remove heat. An improperly operating fan clutch will impact overall performance of the engine and A/C system.
• Durability tested on every new design
• Leak Tested

Part Number: 4021-05330017

Notes: Engine Cooling Fan Clutch -- With 4 Bolt Fan Clutch

Features:

• Designed and assembled in the USA
• Designed to meet/exceed OE fit, form and function
• The fan clutch is an important part of the engine and A/C cooling systems. The fan clutch pulls air across the radiator and condenser to help remove heat. An improperly operating fan clutch will impact overall performance of the engine and A/C system.
• Durability tested on every new design
• Leak Tested

Part Number: W0133-2339594

Notes: Severe Duty - Stamped #AR,AX,BD,GP,HK,JM

Part Number: W0133-2429787

Notes: Severe Duty

Part Number: W0133-2345551

Notes: Severe Duty

Part Number: 4021-03619965

Notes: Engine Cooling Fan Clutch -- Standard Thermal; Fan Rotation CW

Features:

• Cools Only When Needed