GM V6 Conversion Radiator


Early CJ's, 1946-1971


Radiator, KryoFlow, Early CJ Jeeps with GM V6 conversions, with integrated oil cooler

Our #K-ECJ11S is a high-performance conversion radiator, ideal for GM V6 engines installations into Early CJ Jeeps (1946-1971) that had the L134 / F134 or Buick V6 engines.

This aluminum radiator features two, one-inch rows and a down flow design. Included are two adjustable side brackets for the installer to achieve optimum depth, height and offset adjustment for their particular installation.

The radiator is equipped with a small transmission oil cooler. However, we typically recommend cooling your transmission with a separate cooler. See Related Products, below, and note that the oil cooler in the radiator could be used for engine oil cooling as well.

Applications & Compatibility

Early CJ Conversion Radiator

Compatible Jeeps

Early CJ Jeeps (1946-1971) that had the L134 / F134 or Buick V6 engines.

Compatible Engines

The radiator is designed for GM V6 engines installations.


These radiators can be used with mechanical or electrical fans. Mechanical fans will require that a shroud be fabricated to match the position of your engine fan. Electric fans are strongly recommended for ease. We recommend our #FX3300-EC fan and shroud kit, in Related Products, below.

Related Products

Electric cooling fan for Early CJ Jeeps
Electric fan controller sensor relay kit
Electric fan controller sensor relay kit
Auto transmission cooler
Stainless coolant overflow tank

Installation Requirements

Typical mechanics hand tools are required along with the appropriate hoses, clamps and coolant required with a normal radiator swap. After installing this upgrade radiator, we recommend that the installer should verify fan-to-radiator clearance and engine mount integrity before operating the Jeep.

Radiator Warranty Policy

Our radiators come with a 1-year / 100% warranty for defects in materials or workmanship, which is prorated and Novak will cover the cost as follows:

  • 1 year, 100%
  • 2 years, 75%
  • 3 years, 50%
  • 4 years, 25%

The above does not include incoming shipping of your radiator to Novak.

Coverage can be denied if it is determined that:

  • Abuse has occured; no radiator can withstand shoddy installation or debris striking the radiator
  • Electrolysis has occurred due to failure to ground the radiator to the frame
  • Overpressured. We do not recommend exceeding 16psi on the cap

Our overall warranty and other policies are found here. We strongly recommend you educate yourself about cooling and the related topics here before taking on this or any custom vehicle cooling project.

Also See