[Vehicle Fitment] For 55 56 57 58 59 Compatible With Chevy GMC Truck Pickup 100/150/3100/3200 Apache 1955 1956 1957 1958 1959 [Dimensions] Core Dimensions: 19 3/8" high x 21 3/4" wide, Overall Dimensions: 26 3/4" high x 26 1/2" wide, Upper inlet: 1 1/2" located in center, Lower outlet: 1 3/4" located on passenger side [Feature] 3-row crossflow radiator with coolant capacity exceeding OEM specifications and heat dissipation efficiency improved by 35-40%, equipped with a zinc alloy pressure cap, featuring 2mm-thick AA5052 aluminum plates and a U-shaped fin design, fabricated using high-frequency welding with imported welding wires in a dual-track welding process, undergoing 5 inspections throughout the entire process with 100% passing burst pressure testing and finished product air-tightness testing [Direct Replacement] Carefully crafted to exceptional OE standards for a precise fit, with radiator dimensions ensured by a CNC turret punch machine, requiring no drilling or modifications for installation; OE/OEM part numbers: 5559,CC5559,CU5559,RAD5559,DPI5559 [Ensure fitmen] Ensure a perfect match with your vehicle by entering its details in the Amazon Confirmed Fit tool provided on this page đVehicle Fitment: For 1955 -1959 Chevy Pickup Truck For 1955-1959 GMC Truck For 55 56 57 58 59 Chevy Apache Truck For 55 56 57 58 59 Chevrolet Truck pickup For 55-59 GMC Pickup Truck For 55-59 Chevy 3100 Pickup Truck For 1955-1959 CHEVY TRUCK PICKUP SUBURBAN PANEL For CHEVY TRUCK GMC 55-59 For CHEVY 3100 3200 3400 3500 3600 3800 55-59 đRadiator Configuration: Brand Name: CFOTIXAR Condition:100% New Row: 3 Row Core Material: Full Aluminium Radiator Cap: included Core and Tank: All Aluminum Core Dimensions: 19 3/8" high x 21 3/4" wide Overall Dimensions: 26 3/4" high x 26 1/2" wide Upper inlet: 1 1/2" located in center. Lower outlet: 1 3/4" located on passenger side. Auto trans cooler: yes đFAN Specification: Maximum Fan CFM: 1730 cfm Fan Diameter (in): 16.050â Thickness (in): 2.95" Number of Blades: 10 blades Maximum Fan RPM: 2,250 rpm Blade Material: Plastic Includes the Mounting Tabs for an Easy Zip Tie Installation đCFOTIXAR Radiator: Key Benefits ăBuilt with AA5052 aircraft-grade aluminum â tougher against corrosionă ăBrazed core tech = max performance and reliabilityă ă2mm-thick AA5052 tanks/fittings: built to take abuseă ăCNC-machined billet aluminum fill neck â rugged, no weak spotsă ăErgonomic CNC cap with engraved detail + anodized finishă ăOE-spec fit â drops right in, no hassleă ăHigh-density core: 3/8" row spacing = 25% more rows than standard aluminum radiatorsă ă14-16 fins per inch (â1,500 more than others) â blasts heat fasteră ă30-45% more efficient than stock. Extra coolant capacity = better cooling under race-day temp spikesă AA5052 series aluminum outperforms T-3303 significantly.