66-67 GTO Radiator w/o AC MT

The 66-67 GTO Radiator without AC and Manual Transmission by COLD CASE RADIATORS is purpose-built for Pontiac muscle car enthusiasts restoring or upgrading their classic 1966–1967 GTO platforms. This radiator fills a critical cooling system gap for manual transmission equipped GTOs that lack factory air conditioning, delivering reliable thermal management for weekend cruises and street driving. Whether you're completing a frame-off restoration or refreshing an aging cooling system on an existing build, this compact design addresses the specific plumbing and fitment demands of mid-sixties Pontiac architecture.

COLD CASE RADIATORS engineers their cores using modern aluminum construction with efficient multi-pass internal galleries that dissipate heat faster than original cast iron units, even at idle or in heavy traffic. The non-AC configuration eliminates condenser lines and related mounting hardware, yielding a lighter assembly (17.3 lbs) and simpler installation path compared to factory AC radiators. The compact 23 × 7.5 × 29 inch envelope preserves engine bay aesthetics while maximizing cooling capacity, making it ideal for stock-appearing restorations or lightly modified engines running stock carburetor and ignition systems. Aluminum construction also resists corrosion better than original equipment, extending service life and minimizing coolant degradation over seasons of use.

Restoration shops, DIY mechanics, and GTO owners preparing cars for Pontiac-focused cruise-ins or car shows rely on this radiator for its bolt-in compatibility with 1966–1967 GTO manual transmission models. Installation is straightforward—matching hose locations and mounting flanges to original specifications—and requires no custom fabrication or bracket modification. Pair this radiator with period-correct hose clamps and fresh coolant to ensure decades of reliable heat shedding, whether your GTO sees seasonal driving or regular road duty.