Plymouth Roadrunner Small Block 3-Row Performance Aluminum Radiator w/ 22" Core, 1972–1973

Plymouth Roadrunner Small Block 3-Row Performance Aluminum Radiator w/ 22" Core, 1972–1973
Plymouth Roadrunner Small Block 3-Row Performance Aluminum Radiator w/ 22" Core, 1972–1973
Plymouth Roadrunner Small Block 3-Row Performance Aluminum Radiator w/ 22" Core, 1972–1973

Regular Price: $468.00

Sale Price $351.95


  • Your vehicle requires 3 bottles of full strength coolant or 6 bottles of premixed coolant.
Bread Checkout
Installation Difficulty

  • All-aluminum construction provides greater heat and pressure tolerance, better heat dissipation, increased durability, improved cooling efficiency, and improved structural rigidity
  • 3-row core
  • Increased coolant capacity and optimal heat dissipation
  • Features an internal transmission cooler to provide optimal fluid temperatures for automatic transmissions
  • Billet aluminum fill neck
  • Brazed aluminum core with TIG-welded end tanks
  • Includes magnetic drain plugto capture metallic debris and fragments in your cooling system
  • Mishimoto Lifetime Warranty

If you're looking to upgrade your Plymouth Roadrunner parts, look no further! The Mishimoto 1972–1973 Plymouth Roadrunner Small Block X-Line Performance Aluminum Radiator provides your car with enhanced reliability, improved cooling efficiency, and is an ideal upgrade for the brittle stock radiator. Whether you use your classic for daily driving or take it to the track, many people overlook the importance of installing an upgraded radiator in their engine. A stock radiator cannot handle the heat that comes along with having a great deal of horsepower. The Mishimoto Plymouth Roadrunner Small Block X-Line Aluminum Radiator is manufactured using durable aircraft-quality aluminum end tanks, precision TIG-welded to an efficient brazed aluminum core. The inlet and outlet provide precise leak-free connections. This Plymouth Roadrunner performance radiator also includes a Magnetic Oil Drain Plug, which effectively removes metal fragments circulating in the cooling system. As with all our aluminum radiators, Plymouth Roadrunner this 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 1/8"-27NPT

Chassis Codes B - Body
E - Body

Engine Codes 318ci (5.2L) V8

Fits 1970-1971 Dodge Challenger
1970-1972 Dodge Charger
1970-1973 Dodge Coronet
1970-1973 Plymouth Barracuda
1972-1973 Plymouth Roadrunner
1971-1973 Plymouth Satellite

Overall Height 25.7"

DPI 2374

Drain Plug Thread Size (M12) x 1.5

Overall Length 21.3"

Tank Wall Thickness 0.08"

Outlet 1.75"

Rows 3

Inlet 1.5"

Coolant Capacity 5.07

Dual Pass False

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

Overall Width 5"

Core Length 22.1"

Core Height 15.9"

Core Thickness 2.5"

Overall Length (in) 21.30

Overall Height (in) 25.70

Overall Width (in) 5.00

Rows 3


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