Description
The Mishimoto Performance Fan Shroud Kit, part number MMFS-CK-63K, is a purpose-built aluminum shroud and 16-inch electric fan assembly designed for the 1963-1966 GM C/K truck. It completely eliminates the stock, failure-prone mechanical fan by mounting exclusively to Mishimoto’s Chevrolet/GM C/K Performance Radiator, pairing precise fitment with a high-flow electric fan rated at over 1850 cfm of airflow.
Built from aluminum with a brushed housing finish and a silver shroud, this Mishimoto cooling upgrade is engineered to bolt straight to the companion Performance Radiator with no cutting or bending required. The included 16-inch electric fan uses 10 black plastic straight blades and mounts in a plug-in, electrical configuration, giving your cooling system a modern, reliable alternative to an aging mechanical fan clutch setup. For owners who want total command over coolant temperature, the kit can optionally be paired with the Mishimoto Adjustable Fan Controller Kit (MMFAN-CNTL-U), which uses both NPT and probe-type sensors to manage fan operation at idle and beyond.
Vehicle Applications
This fan shroud is designed around Mishimoto’s Chevrolet/GM C/K Performance Radiator for the 1963-1966 GM C/K truck platform, and broader fitment data confirms coverage across a wide span of related Chevrolet and GMC trucks. On the Chevrolet side, that includes the C10 and C30 panel trucks (1963-1966), C10, C20, and C30 pickups (1960-1971), C50 and C60 trucks (1963-1966), the C80 (1963-1965), the K10 and K20 pickups (1960-1971), and the K30 pickup (1968-1971). GMC coverage spans the C15/C1500, C25/C2500, and C35/C3500 pickups (1967-1971), the K15/K1500 pickup (1966-1971), the K25/K2500 pickup (1967-1971), and the K35/K3500 pickup (1968-1971). It also fits a range of full-size Pontiac models equipped with 389ci (6.4L) or 421ci (6.9L) V8 engines, including the Bonneville (Base and Safari, 1961-1964; Custom, 1961-1962), Catalina (Base and Safari, 1961-1964; Ventura, 1962-1964; 2+2, 1964), Grand Prix (1962-1966), and Star Chief (1961-1964).
Features
- Includes a high-flow 16-inch Mishimoto electric fan producing over 1850 cfm of airflow
- All-aluminum shroud and housing construction with a brushed finish and silver shroud color
- Designed to mount exclusively to Mishimoto’s Chevrolet/GM C/K Performance Radiator
- Replaces the failure-prone stock mechanical fan
- No cutting or bending of the shroud required for installation
- Includes all mounting hardware needed for installation
- Optional Mishimoto Adjustable Fan Controller Kit (MMFAN-CNTL-U) available for complete coolant temperature control, with both NPT and probe-type sensors
- Kit contains the aluminum fan shroud, 16-inch Mishimoto slim electric fan, adjustable relay, push-in radiator temperature probe, 1/8-in NPT temperature sensor, wiring harness, and full set of connectors and fasteners
- Backed by the Mishimoto Lifetime Warranty
Specifications
- Brand: Mishimoto
- Part Number: MMFS-CK-63K
- Width: 4.28 in
- Height: 17.13 in
- Length: 24.76 in
- Fan Diameter: 16 in
- Blade Quantity: 10
- Blade Material: Plastic
- Blade Type: Straight
- Blade Color: Black
- Maximum Airflow: 1850 CFM
- Shroud Material: Aluminum
- Shroud Color: Silver
- Housing Finish: Brushed
- Grade Type: Performance
- Motor Included: Yes
- Hardwired or Plug-In: Plug-In
- Electrical or Mechanical: Electrical
- Mounting Hardware Included: Yes
Frequently Asked Questions
What does the Mishimoto MMFS-CK-63K fan shroud kit include?
The kit includes an aluminum fan shroud, a 16-inch Mishimoto slim electric fan, an adjustable relay, a push-in radiator temperature probe, a 1/8-in NPT temperature sensor, a wiring harness, and a full set of zip ties, crimp connectors, terminals, a mini fuse holder, and heat shrink, plus mounting hardware.
Will this fan shroud fit any radiator?
No, this fan shroud is designed to mount exclusively to Mishimoto’s Chevrolet/GM C/K Performance Radiator.
How much airflow does the electric fan produce?
The included 16-inch high-flow electric fan produces over 1850 cfm of airflow.
Can I control coolant temperature with this kit?
Yes, this kit can optionally be paired with the Mishimoto Adjustable Fan Controller Kit (MMFAN-CNTL-U), which uses both NPT and probe-type sensors to provide control over coolant temperatures.
Which vehicles does the MMFS-CK-63K fan shroud fit?
It fits the 1963-1966 GM C/K truck platform, along with a range of related Chevrolet C10/C20/C30, C50/C60, C80, and K10/K20/K30 trucks (1960-1971 depending on model), GMC C15/C1500 through K35/K3500 pickups (1966-1971 depending on model), and select Pontiac Bonneville, Catalina, Grand Prix, and Star Chief models with 389ci or 421ci V8 engines (1961-1966 depending on trim).
What warranty comes with this fan shroud kit?
This fan shroud kit includes the Mishimoto Lifetime Warranty.
âš WARNING (California Proposition 65): This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
