18.5in Tall Radiator for LS and LT Swaps on 1967-1987 C/K Series SquareBody Trucks
When you tackle an LS or LT engine swap in a 1967 to 1987 SquareBody C/K truck with a manual transmission, reliable heat control becomes a top priority. This 18.5 inch tall radiator mounts directly to factory brackets, preserving hose routing and transmission cooler connections without any modification. Its dual electric fans engage automatically as coolant temperature rises to maintain airflow at low vehicle speeds or under towing conditions. An aluminum core adds corrosion resistance and rapid heat dissipation for consistent street and trail performance.
Effortless Fitment for Manual Transmission Applications
This radiator installs directly on the original brackets of 1967–1987 C/K series trucks and SUVs with manual transmissions, preserving the factory hose routing and transmission cooler lines without any extra parts or fabrication. By matching the height and mounting points of the stock unit, it ensures that coolant hoses and fittings align perfectly, reducing the chance of leaks or misalignment. Builders save valuable time on mockups and bracket modifications, so the engine bay remains tidy and true to its original appearance. This straightforward approach means both novice and experienced technicians can complete the cooling upgrade with confidence.
Responsive Dual Fan Assembly for Low-Speed Cooling
Equipped with two high output electric fans, the assembly senses rising coolant temperatures and begins drawing air through the core even when vehicle speed is low. This continuous airflow prevents heat soak during stop‐and‐go traffic or while towing heavy loads, keeping engine temperatures stable under demanding conditions. The automatic activation removes the need for manual switches or add-on controls, simplifying wiring and reducing potential failure points. As a result, throttle response and power delivery stay consistent from city streets to mountain passes.
Premium Aluminum Core Enhances Heat Rejection
The 18.5-inch tall core is crafted from high-quality aluminum, offering exceptional thermal conductivity compared to traditional copper brass designs. Its larger coolant capacity and tube spacing accelerate heat transfer away from the engine, delivering reliable performance during long highway drives or trail excursions. Aluminum's inherent corrosion resistance also extends service intervals, even in regions with road salt or high humidity. Customers can further personalize the look with a classic bare finish or a durable black epoxy coating for added surface protection.
Made in USA for Consistent Quality Control
Every radiator core, fan shroud, and mounting bracket is manufactured domestically under strict production standards to guarantee repeatable fit and function. In-house quality checks confirm that each unit meets tolerance requirements before it leaves the facility, ensuring drop-in reliability on C10, K10, Blazer, and Suburban frames. This local production approach not only shortens lead times but also supports skilled American craftsmanship. End users benefit from solid warranties and the assurance that replacement parts match the original specifications.
Get the ideal cooling setup by choosing the same radiator but without fans in our 1967-1987 GM Truck Radiator 18.5" Tall (Manual Transmission) Without Fans.