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Chevrolet/GM C/K Truck 3-Row Performance Aluminum Radiator, 1963–1966

Chevrolet/GM C/K Truck 3-Row Performance Aluminum Radiator, 1963–1966
Chevrolet/GM C/K Truck 3-Row Performance Aluminum Radiator, 1963–1966
Chevrolet/GM C/K Truck 3-Row Performance Aluminum Radiator, 1963–1966
Chevrolet/GM C/K Truck 3-Row Performance Aluminum Radiator, 1963–1966

Regular Price: $390.00

Sale Price $292.95


  • Your vehicle requires 3 bottles of full strength coolant or 5 bottles of premixed coolant.
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Installation Difficulty

  • 100% aluminum construction featuring high-quality, durable TIG-welding
  • 3-row brazed aluminum core
  • Features an internal transmission cooler to ensure optimal fluid temperatures for automatic transmissions
  • Increased coolant capacity and optimal heat dissipation
  • Billet aluminum fill neck
  • Includes magnetic drain plug to capture metallic debris and fragments in cooling system
  • Mishimoto Lifetime Warranty

An ideal upgrade for the brittle stock radiator, the Mishimoto 1963–1966 GM C/K Truck X-Line Performance Aluminum Radiator provides your truck with enhanced reliability and improved cooling efficiency. Whether you use your classic for daily driving or take it to the track, don't overlook the importance of installing an upgraded classic truck radiator in your engine. A stock radiator cannot handle the heat that comes along with having a great deal of horsepower. This GM C/K truck radiator is manufactured using durable aircraft-quality aluminum end tanks, precision TIG-welded to an efficient brazed aluminum core. The inlet and outlets provide precise leak-free connections. This classic car radiator also includes a magnetic oil drain plug, which effectively removes metal fragments circulating in the cooling system. As with all our aluminum radiators, every GM C/K truck radiator includes the Mishimoto Lifetime Warranty, ensuring superior product quality and craftsmanship.

Mishimoto Automotive (“Mishimoto”) warrants its products under this lifetime limited warranty policy (“Warranty Policy”). This Warranty Policy applies solely to: (i) Mishimoto Products purchased directly from Mishimoto or Mishimoto authorized dealers (each a “Mishimoto Product” and collectively, the “Mishimoto Products”) and (ii) the original purchaser of such Mishimoto Product (“Purchaser”). This Warranty Policy is non-transferable and all claims under this Warranty Policy must be accompanied by the original sales receipt. The terms and conditions of this Warranty Policy are subject to change by Mishimoto at any time without notice.

For our complete warranty policy, please click here.



Material Aluminum

Note Transmission Cooler Thread Info:
On Radiator: Female 1/4" BSPP

Engine Codes 220ci (3.8L) L6
250ci (4.1L) L6
283ci (4.6L) V8
292ci (4.8L) L6
327ci (5.3L) V8
350ci (5.7L) V8
389ci (6.4L) V8
421ci (6.9L) V8

Fits 1963–1966 GM C/K Pickup 220ci (3.8L) L6, 250ci (4.1L) L6, 283ci (4.6L) V8, 292ci (4.8L) L6
1963–1966 GM C/K Suburban 220ci (3.8L) L6, 250ci (4.1L) L6, 283ci (4.6L) V8, 292ci (4.8L) L6, 327ci (5.3L) V8, 350ci (5.7L) V8
1961–1964 Pontiac Bonneville 389ci (6.4L) V8, 421ci (6.9L) V8
1961–1964 Pontiac Catalina 389ci (6.4L) V8, 421ci (6.9L) V8
1962–1966 Pontiac Grand Prix 389ci (6.4L) V8, 421ci (6.9L) V8
1961–1964 Pontiac Star Chief 389ci (6.4L) V8, 421ci (6.9L) V8

Overall Height 23"

DPI 284

Drain Plug Thread Size 1/4-18 NPT

Overall Length 25.2"

Tank Wall Thickness 0.08"

Outlet 1.75"

Rows 3

Inlet 1.75"

Coolant Capacity 4.81

Dual Pass False

Purchase Includes Mishimoto Radiator
Mishimoto Radiator Cap
Magnetic Drain Plug
Mishimoto Lifetime Warranty

Overall Width 4.5"

Core Length 17.4"

Core Height 22.8"

Core Thickness 2"

Overall Length (in) 25.20

Overall Height (in) 23.00

Overall Width (in) 4.50

Rows 3


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