Part #: 121

TYC 121 Radiator - Primary

TYC Radiator, Primary
⚙️ 16 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦TYC Radiator, Primary
🚗Fitment: Jeep, Cherokee, Comanche, and Wagoneer
🔄Easy Returns — Return within 60 days for a full refund
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Overview of the TYC Radiator 121 for Jeep Vehicles

The TYC Radiator part number 121 is engineered specifically for Jeep Cherokee, Comanche, and Wagoneer models. Designed with durable aluminum core material and a concentric transmission oil cooler, this radiator supports efficient engine cooling and transmission performance.

  • Core material constructed from aluminum for effective heat dissipation
  • Includes a concentric transmission oil cooler for integrated cooling
  • Crossflow flow configuration enhances coolant circulation
  • Core dimensions: 10.55 inches height, 31.02 inches length, and 1.26 inches thickness
  • Hose clamp inlet and outlet connections with diameters of 1.50 and 1.26 inches respectively
  • Single-row tube design with 26 total tubes and 64 fins per 4 inches for optimized airflow

TYC Radiator Product Line Details

The TYC Radiator line focuses on delivering reliable cooling components tailored to specific vehicle applications. This radiator model 121 integrates a concentric transmission oil cooler, which is designed to maintain transmission fluid temperatures within optimal ranges, reducing wear and improving longevity. The aluminum core and crossflow design contribute to consistent engine temperature regulation, making it suitable for Jeep Cherokee, Comanche, and Wagoneer vehicles.

Technical Specifications and Features

This radiator features a 2.98x11.33 inch top and bottom header, supporting structural integrity and coolant flow. The core includes 27 total fin rows with a fin wave height of 0.31 inches and a fin pitch of 3.2, which facilitates efficient heat exchange. The single-row tube configuration with 26 tubes sized 32x2 inches ensures proper coolant distribution. Hose clamp inlet and outlet connections simplify integration with existing cooling systems.

Applications and Common Issues Addressed

  • Replacement for worn or leaking radiators in Jeep Cherokee, Comanche, and Wagoneer models
  • Resolves overheating caused by inefficient heat dissipation
  • Addresses transmission fluid overheating with integrated concentric oil cooler
  • Improves coolant flow and reduces risk of engine damage due to thermal stress
  • Suitable for vehicles requiring a crossflow radiator design

Installation Notes and Tips

Ensure compatibility with Jeep Cherokee, Comanche, and Wagoneer models before installation. The hose clamp inlet and outlet connections require proper hose sizing (1.50 inches inlet, 1.26 inches outlet) for secure attachment. Verify that the radiator core dimensions fit within the vehicle’s radiator support. Properly bleed the cooling system after installation to prevent air pockets and ensure optimal performance.

Quality Assurance and Warranty

TYC Radiator part number 121 is manufactured to meet OEM standards for fit, form, and function. The aluminum core and integrated transmission oil cooler are designed for durability and consistent performance. Warranty information should be confirmed with the distributor or manufacturer, as it may vary by region.

BrandTYC
Part Number121
PositionTYC Radiator, Primary
Core MaterialAluminum
Transmission Oil Cooler IncludedYes
Transmission Oil Cooler TypeConcentric oil cooler
Engine Oil Cooler IncludedNo
Bottom Header2.98x11.33
Core Height (in)10.55
Core Length (in)31.02
Core Thickness (in)1.26
Fin Count (every 4")64
Fin Wave Height (in)0.31
Find Wave Pitch3.2
Flow ConfigurationCrossflow
Inlet Connection TypeHose clamp
Inlet Diameter (in)1.50
No. Of Rows1
Outlet Connection TypeHose clamp
Outlet Diameter (in)1.26
Toc Distance (in)7.52
Top Header2.98x11.33
Total Fin Row Count27
Total Tube Count26
Tube Count (every 4")10
Tube Width X Height32x2

This part fits 16 vehicles. Search below:

YearMakeModelSubmodelBody TypeLitersCylindersPositionNotes
1990JeepCherokee4.0LL6N/ATYC Radiator
1990JeepComanche4.0LL6N/ATYC Radiator
1990JeepWagoneer4.0LL6N/ATYC Radiator
1989JeepCherokee4.0LL6N/ATYC Radiator
1989JeepComanche4.0LL6N/ATYC Radiator
1989JeepWagoneer4.0LL6N/ATYC Radiator
1988JeepCherokee4.0LL6N/ATYC Radiator
1988JeepComanche4.0LL6N/ATYC Radiator
1988JeepWagoneer4.0LL6N/ATYC Radiator
1987JeepCherokee4.0LL6N/ATYC Radiator
1987JeepComanche4.0LL6N/ATYC Radiator
1987JeepWagoneer4.0LL6N/ATYC Radiator
1986JeepCherokee2.8LV6N/ATYC Radiator
1986JeepComancheCustomStandard Cab Pickup2.8LV6PrimaryStd Duty Cooling; TYC Radiator
1985JeepCherokee2.8LV6N/ATYC Radiator
1984JeepCherokee2.8LV6N/ATYC Radiator

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

8010078

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.