Plymouth Roadrunner Small Block 3-Row Performance Aluminum Radiator w/ 26" Core, 1972–1973
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Mishimoto offers Liquid Chill® Synthetic Engine Coolant in both Full Strength and 50/50 Premixed.
Your vehicle requires 3 gallons of Full Strength Liquid Chill® Synthetic Engine Coolant or 6 gallons of 50/50 Premixed Liquid Chill® Synthetic Engine Coolant.
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If you’re looking to upgrade your Roadrunner parts, look no further! This Mishimoto 1972–1973 Plymouth Roadrunner Small Block V8 X-Line Performance Aluminum Radiator is an ideal upgrade for the brittle stock Roadrunner radiator, and provides your car with enhanced reliability and improved cooling efficiency. Whether you use your 1973 Plymouth Roadrunner as a daily driver or take your 1972 Roadrunner down to the track on the weekends, many people overlook the importance of installing an upgraded radiator in their engine. A stock Roadrunner radiator cannot handle the heat that comes along with having a great deal of horsepower.
The Mishimoto Plymouth Roadrunner Small Block V8 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 outlets provide precise leak-free connections. This performance aluminum radiator also includes a Magnetic Drain Plug, which effectively removes metal fragments circulating in the cooling system. As with all our products, this Roadrunner 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.
Transmission Cooler Thread Info:On Radiator: Female 1/8"-27NPT
318ci (5.2L) V8340ci (5.6L) V8
1970-1971 Dodge Challenger Small Block V8 (5.2L/5.6L) 1970-1972 Dodge Charger Small Block V8 (5.2L/5.6L) 1972-1973 Plymouth Roadrunner Small Block V8 (5.2L/5.6L)1970-1973 Plymouth Barracuda Small Block V8 (5.2L/5.6L) 1970-1973 Dodge Coronet (5.2L/5.6L)1971-1973 Plymouth Satellite (5.2L/5.6L)
Drain Plug Thread Size
(M12) x 1.5
Tank Wall Thickness
Mishimoto RadiatorMishimoto Radiator CapMagnetic Drain PlugMishimoto Lifetime Warranty
Overall Length (in)
Overall Height (in)
Overall Width (in)
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